/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:04:51,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:04:51,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:04:51,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:04:51,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:04:51,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:04:51,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:04:51,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:04:51,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:04:51,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:04:51,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:04:51,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:04:51,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:04:51,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:04:51,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:04:51,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:04:51,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:04:51,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:04:51,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:04:51,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:04:51,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:04:51,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:04:51,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:04:51,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:04:51,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:04:51,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:04:51,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:04:51,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:04:51,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:04:51,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:04:51,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:04:51,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:04:51,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:04:51,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:04:51,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:04:51,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:04:51,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:04:51,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:04:51,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:04:51,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:04:51,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:04:51,621 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:04:51,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:04:51,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:04:51,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:04:51,637 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:04:51,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:04:51,637 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:04:51,637 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:04:51,637 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:04:51,638 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:04:51,639 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:51,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:04:51,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:04:51,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:04:51,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:04:51,639 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:04:51,640 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:04:51,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:04:51,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:04:51,640 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:04:51,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:04:51,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:04:51,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:04:51,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:04:51,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:04:51,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:04:51,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:04:51,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:04:51,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:04:51,828 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:04:51,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:04:51,900 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_B1SyyS/tmp/69339895b3bc48aea79e216e41580ac0/FLAG2a0dda09e [2020-07-01 11:04:52,239 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:04:52,239 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:04:52,246 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_B1SyyS/tmp/69339895b3bc48aea79e216e41580ac0/FLAG2a0dda09e [2020-07-01 11:04:52,658 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_B1SyyS/tmp/69339895b3bc48aea79e216e41580ac0 [2020-07-01 11:04:52,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:04:52,671 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:04:52,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:04:52,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:04:52,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:04:52,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:52,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f973bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52, skipping insertion in model container [2020-07-01 11:04:52,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:52,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:04:52,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:04:52,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:04:52,930 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:04:52,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:04:52,961 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:04:52,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52 WrapperNode [2020-07-01 11:04:52,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:04:52,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:04:52,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:04:52,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:04:52,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:52,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:52,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:04:52,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:04:52,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:04:52,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:04:53,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... [2020-07-01 11:04:53,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:04:53,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:04:53,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:04:53,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:04:53,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:04:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:04:53,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:04:53,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:04:53,241 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:04:53,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:53 BoogieIcfgContainer [2020-07-01 11:04:53,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:04:53,245 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:04:53,245 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:04:53,247 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:04:53,248 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:53" (1/1) ... [2020-07-01 11:04:53,260 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 14 edges [2020-07-01 11:04:53,262 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:04:53,262 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:04:53,263 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:04:53,263 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:04:53,265 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:04:53,266 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:04:53,266 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:04:53,281 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:04:53,297 INFO L200 BlockEncoder]: SBE split 4 edges [2020-07-01 11:04:53,301 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:04:53,303 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:04:53,313 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:04:53,315 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:04:53,317 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:04:53,318 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:04:53,318 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:04:53,318 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:04:53,318 INFO L313 BlockEncoder]: Encoded RCFG 6 locations, 11 edges [2020-07-01 11:04:53,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:53 BasicIcfg [2020-07-01 11:04:53,319 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:04:53,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:04:53,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:04:53,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:04:53,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:04:52" (1/4) ... [2020-07-01 11:04:53,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c83cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (2/4) ... [2020-07-01 11:04:53,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c83cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:53" (3/4) ... [2020-07-01 11:04:53,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c83cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:53" (4/4) ... [2020-07-01 11:04:53,328 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:04:53,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:04:53,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:04:53,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:04:53,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:04:53,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:04:53,382 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:04:53,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:04:53,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:04:53,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:04:53,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:04:53,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:04:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-07-01 11:04:53,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:04:53,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-07-01 11:04:53,458 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-01 11:04:53,458 INFO L268 CegarLoopResult]: For program point L20-3(lines 20 22) no Hoare annotation was computed. [2020-07-01 11:04:53,459 INFO L271 CegarLoopResult]: At program point L18-2(lines 18 26) the Hoare annotation is: true [2020-07-01 11:04:53,459 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:04:53,459 INFO L268 CegarLoopResult]: For program point L19(lines 19 24) no Hoare annotation was computed. [2020-07-01 11:04:53,459 INFO L271 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: true [2020-07-01 11:04:53,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:53 BasicIcfg [2020-07-01 11:04:53,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:04:53,469 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:04:53,469 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:04:53,473 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:04:53,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:53,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:04:52" (1/5) ... [2020-07-01 11:04:53,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7ef539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:53,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:52" (2/5) ... [2020-07-01 11:04:53,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7ef539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:53,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:53" (3/5) ... [2020-07-01 11:04:53,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7ef539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:53,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:53" (4/5) ... [2020-07-01 11:04:53,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7ef539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:53, skipping insertion in model container [2020-07-01 11:04:53,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:53,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:53" (5/5) ... [2020-07-01 11:04:53,478 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:04:53,508 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:04:53,508 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:04:53,508 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:04:53,508 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:04:53,508 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:04:53,509 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:04:53,509 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:04:53,509 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:04:53,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 11:04:53,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:04:53,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:53,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:53,536 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:04:53,536 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:53,536 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:04:53,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 11:04:53,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:04:53,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:53,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:53,538 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:04:53,538 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:53,543 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L18-2true [2020-07-01 11:04:53,543 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-2true [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 8#L19true [50] L19-->L19-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 5#L19-2true [44] L19-2-->L18-2: Formula: (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 (- 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 4#L18-2true [2020-07-01 11:04:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2020-07-01 11:04:53,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:53,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381199689] [2020-07-01 11:04:53,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,629 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash 71747, now seen corresponding path program 1 times [2020-07-01 11:04:53,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:53,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420596905] [2020-07-01 11:04:53,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,646 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2127326, now seen corresponding path program 1 times [2020-07-01 11:04:53,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:53,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504502861] [2020-07-01 11:04:53,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:53,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:53,708 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:53,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:53,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:53,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:53,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:53,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:53,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:53,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:53,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:04:53,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:53,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:53,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:53,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:53,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:53,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:53,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:53,890 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:53,890 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:53,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:53,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:53,911 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:53,911 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:53,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:53,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:53,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:53,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:53,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:53,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:53,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:53,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:54,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:54,028 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,060 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:54,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:54,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:54,136 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:54,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:54,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:54,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:54,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:54,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:54,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:54,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:04:54,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:54,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:54,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,223 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:54,229 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:54,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:54,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:54,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:54,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:54,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:54,243 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:54,249 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:54,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:54,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:54,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:54,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:54,288 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:54,288 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:54,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:54,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:54,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:54,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:54,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:54,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:54,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:54,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:54,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:54,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:54,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:54,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:54,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:54,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:54,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:54,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:54,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:54,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:54,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:54,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:54,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:54,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:54,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:54,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:54,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:54,417 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:54,417 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:54,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:54,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:54,422 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:54,422 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:54,455 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:54,495 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:54,496 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:54,509 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:54,510 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:54,573 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:04:54,578 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:04:54,580 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states. Second operand 3 states. [2020-07-01 11:04:54,675 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states.. Second operand 3 states. Result 22 states and 43 transitions. Complement of second has 7 states. [2020-07-01 11:04:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:04:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:04:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-07-01 11:04:54,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:04:54,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:54,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:04:54,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:54,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:04:54,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:54,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 43 transitions. [2020-07-01 11:04:54,693 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 11:04:54,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 17 states and 32 transitions. [2020-07-01 11:04:54,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:04:54,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 11:04:54,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 32 transitions. [2020-07-01 11:04:54,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:54,701 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 32 transitions. [2020-07-01 11:04:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 32 transitions. [2020-07-01 11:04:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-07-01 11:04:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 11:04:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 26 transitions. [2020-07-01 11:04:54,731 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 26 transitions. [2020-07-01 11:04:54,731 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 26 transitions. [2020-07-01 11:04:54,731 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:04:54,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 26 transitions. [2020-07-01 11:04:54,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:04:54,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:54,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:54,733 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:54,733 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:04:54,733 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 73#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 78#L19 [59] L19-->L20-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 83#L20-2 [63] L20-2-->L20-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 84#L20-2 [2020-07-01 11:04:54,734 INFO L796 eck$LassoCheckResult]: Loop: 84#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 84#L20-2 [2020-07-01 11:04:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:54,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2127624, now seen corresponding path program 1 times [2020-07-01 11:04:54,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:54,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834460682] [2020-07-01 11:04:54,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash 93, now seen corresponding path program 1 times [2020-07-01 11:04:54,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:54,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834276968] [2020-07-01 11:04:54,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,756 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:54,756 INFO L82 PathProgramCache]: Analyzing trace with hash 65956406, now seen corresponding path program 1 times [2020-07-01 11:04:54,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:54,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148192869] [2020-07-01 11:04:54,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:54,771 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:54,786 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:54,786 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:54,786 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:54,786 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:54,786 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:54,787 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,787 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:54,787 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:54,787 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:04:54,787 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:54,787 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:54,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:54,868 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:54,869 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:54,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:54,880 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:54,919 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:54,919 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:54,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:54,958 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=1} Honda state: {ULTIMATE.start_main_#t~nondet2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:54,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:54,993 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:55,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:55,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:55,202 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:55,205 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:55,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:55,205 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:55,205 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:55,205 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:55,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:55,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:55,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:04:55,206 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:55,207 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:55,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:55,278 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:55,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:55,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:55,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:55,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:55,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:55,290 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:55,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:55,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:55,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:55,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:55,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:55,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:55,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:55,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:55,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:55,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:55,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:55,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:55,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:55,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:55,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:55,390 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:55,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:55,425 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:55,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:55,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:55,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:55,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:55,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:55,430 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:55,434 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:55,435 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,438 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:55,438 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:55,438 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:55,438 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:55,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:55,489 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:55,490 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:55,494 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:55,495 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:55,495 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:04:55,495 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:04:55,496 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 26 transitions. cyclomatic complexity: 14 Second operand 2 states. [2020-07-01 11:04:55,522 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 26 transitions. cyclomatic complexity: 14. Second operand 2 states. Result 20 states and 41 transitions. Complement of second has 4 states. [2020-07-01 11:04:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:04:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2020-07-01 11:04:55,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:04:55,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:55,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2020-07-01 11:04:55,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:55,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:04:55,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:55,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 41 transitions. [2020-07-01 11:04:55,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 11:04:55,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 36 transitions. [2020-07-01 11:04:55,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:04:55,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 11:04:55,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 36 transitions. [2020-07-01 11:04:55,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:55,529 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 36 transitions. [2020-07-01 11:04:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 36 transitions. [2020-07-01 11:04:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-01 11:04:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 11:04:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 34 transitions. [2020-07-01 11:04:55,532 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:04:55,532 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:04:55,532 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:04:55,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 34 transitions. [2020-07-01 11:04:55,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:04:55,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:55,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:55,534 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:55,534 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:04:55,535 INFO L794 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 146#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 144#L19 [59] L19-->L20-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 151#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 152#L20-2 [2020-07-01 11:04:55,535 INFO L796 eck$LassoCheckResult]: Loop: 152#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 152#L20-2 [2020-07-01 11:04:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:55,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2127623, now seen corresponding path program 1 times [2020-07-01 11:04:55,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:55,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884844806] [2020-07-01 11:04:55,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,546 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 93, now seen corresponding path program 2 times [2020-07-01 11:04:55,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:55,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493997011] [2020-07-01 11:04:55,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash 65956375, now seen corresponding path program 2 times [2020-07-01 11:04:55,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:55,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980468409] [2020-07-01 11:04:55,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:55,569 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:55,585 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:55,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:55,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:55,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:55,585 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:55,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:55,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:55,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:55,586 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:04:55,586 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:55,586 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:55,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,657 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:55,658 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:55,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:55,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:55,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:55,670 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:55,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:55,715 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:55,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:55,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:55,981 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:55,983 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:55,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:55,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:55,983 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:55,983 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:55,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:55,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:55,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:55,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:04:55,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:55,984 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:55,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:55,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:56,044 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:56,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:56,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:56,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:56,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:56,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:56,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:56,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:56,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:56,057 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:56,057 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,059 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:56,059 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:56,059 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:56,060 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~m~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~m~0 + 1 Supporting invariants [] [2020-07-01 11:04:56,089 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,108 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,113 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,113 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:56,113 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:04:56,114 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:04:56,114 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20 Second operand 2 states. [2020-07-01 11:04:56,138 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20. Second operand 2 states. Result 27 states and 69 transitions. Complement of second has 4 states. [2020-07-01 11:04:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:04:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2020-07-01 11:04:56,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:04:56,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2020-07-01 11:04:56,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:04:56,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 69 transitions. [2020-07-01 11:04:56,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-07-01 11:04:56,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 57 transitions. [2020-07-01 11:04:56,144 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 11:04:56,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 11:04:56,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 57 transitions. [2020-07-01 11:04:56,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:56,144 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 57 transitions. [2020-07-01 11:04:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 57 transitions. [2020-07-01 11:04:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2020-07-01 11:04:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 11:04:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 34 transitions. [2020-07-01 11:04:56,147 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:04:56,147 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:04:56,147 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:04:56,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 34 transitions. [2020-07-01 11:04:56,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:04:56,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:56,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:56,149 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:56,149 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-01 11:04:56,149 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 223#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 220#L19 [59] L19-->L20-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 228#L20-2 [63] L20-2-->L20-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 229#L20-2 [2020-07-01 11:04:56,149 INFO L796 eck$LassoCheckResult]: Loop: 229#L20-2 [60] L20-2-->L20-3: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet2_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 224#L20-3 [45] L20-3-->L19-2: Formula: (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 225#L19-2 [44] L19-2-->L18-2: Formula: (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 (- 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 217#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 218#L19 [58] L19-->L20-2: Formula: (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 232#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 229#L20-2 [2020-07-01 11:04:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2127624, now seen corresponding path program 2 times [2020-07-01 11:04:56,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002756205] [2020-07-01 11:04:56,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1646803084, now seen corresponding path program 1 times [2020-07-01 11:04:56,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316418108] [2020-07-01 11:04:56,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,173 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2110692667, now seen corresponding path program 1 times [2020-07-01 11:04:56,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531086447] [2020-07-01 11:04:56,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,190 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,236 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:56,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:56,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:56,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:56,236 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:56,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:56,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:56,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:04:56,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:56,237 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:56,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,316 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:56,316 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:56,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:56,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:56,323 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:56,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:56,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:56,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:56,391 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:56,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:56,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:56,507 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:56,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:56,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:56,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:56,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:56,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:56,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:56,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:04:56,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:56,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:56,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,599 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:56,600 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:56,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:56,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:56,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:56,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:56,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:56,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:56,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:56,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,638 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:56,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:56,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:56,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:56,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:56,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:56,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:56,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:56,645 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:56,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:56,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:56,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:56,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:56,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:56,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:56,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:56,682 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:56,685 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:04:56,685 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:56,687 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:56,687 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:56,687 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:56,688 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:04:56,717 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,733 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,733 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,738 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,771 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,771 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:56,801 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:56,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:56,803 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:04:56,803 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:04:56,804 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20 Second operand 5 states. [2020-07-01 11:04:56,881 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 86 states and 241 transitions. Complement of second has 31 states. [2020-07-01 11:04:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:04:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:04:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2020-07-01 11:04:56,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:04:56,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 10 letters. Loop has 6 letters. [2020-07-01 11:04:56,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 12 letters. [2020-07-01 11:04:56,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:56,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 241 transitions. [2020-07-01 11:04:56,890 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 11:04:56,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 51 states and 117 transitions. [2020-07-01 11:04:56,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-07-01 11:04:56,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-07-01 11:04:56,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 117 transitions. [2020-07-01 11:04:56,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:56,893 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 117 transitions. [2020-07-01 11:04:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 117 transitions. [2020-07-01 11:04:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-07-01 11:04:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-01 11:04:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 69 transitions. [2020-07-01 11:04:56,897 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 69 transitions. [2020-07-01 11:04:56,897 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 69 transitions. [2020-07-01 11:04:56,897 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:04:56,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 69 transitions. [2020-07-01 11:04:56,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 11:04:56,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:56,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:56,899 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:56,899 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-01 11:04:56,899 INFO L794 eck$LassoCheckResult]: Stem: 438#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 439#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 459#L19 [59] L19-->L20-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 457#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 451#L20-2 [2020-07-01 11:04:56,899 INFO L796 eck$LassoCheckResult]: Loop: 451#L20-2 [60] L20-2-->L20-3: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet2_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 452#L20-3 [45] L20-3-->L19-2: Formula: (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 455#L19-2 [44] L19-2-->L18-2: Formula: (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 (- 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 458#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 454#L19 [58] L19-->L20-2: Formula: (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 456#L20-2 [62] L20-2-->L20-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 451#L20-2 [2020-07-01 11:04:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2127623, now seen corresponding path program 3 times [2020-07-01 11:04:56,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512117981] [2020-07-01 11:04:56,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,910 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1646803084, now seen corresponding path program 2 times [2020-07-01 11:04:56,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663108562] [2020-07-01 11:04:56,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1223188986, now seen corresponding path program 1 times [2020-07-01 11:04:56,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:56,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364771169] [2020-07-01 11:04:56,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:56,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:56,964 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:56,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:56,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:56,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:56,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:56,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:56,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:56,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:56,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:04:56,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:56,965 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:56,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:56,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,060 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:57,061 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,068 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:57,068 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=1} Honda state: {ULTIMATE.start_main_#t~nondet1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:57,153 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:57,189 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:57,224 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:57,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:57,291 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:57,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:57,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:57,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:57,407 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:57,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:57,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:57,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:57,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:57,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:57,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:57,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:04:57,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:57,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:57,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:57,483 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:57,483 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:57,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:57,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:57,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:57,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:57,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:57,528 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,561 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,566 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:57,566 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:57,571 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:57,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:57,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:57,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,638 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,643 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:57,643 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:57,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:57,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:57,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:57,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:57,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:57,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:57,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:57,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:57,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:57,687 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:57,688 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:57,690 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:57,690 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:57,690 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:57,690 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:04:57,720 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,736 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:57,736 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,741 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:57,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,773 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:57,773 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,800 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:57,800 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:57,802 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:04:57,803 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:04:57,803 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 33 states and 69 transitions. cyclomatic complexity: 42 Second operand 5 states. [2020-07-01 11:04:57,881 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 33 states and 69 transitions. cyclomatic complexity: 42. Second operand 5 states. Result 243 states and 597 transitions. Complement of second has 31 states. [2020-07-01 11:04:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:04:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:04:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2020-07-01 11:04:57,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:04:57,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:57,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 10 letters. Loop has 6 letters. [2020-07-01 11:04:57,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:57,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 12 letters. [2020-07-01 11:04:57,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:57,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 243 states and 597 transitions. [2020-07-01 11:04:57,893 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-07-01 11:04:57,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 243 states to 129 states and 271 transitions. [2020-07-01 11:04:57,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-07-01 11:04:57,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-07-01 11:04:57,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 271 transitions. [2020-07-01 11:04:57,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:57,896 INFO L688 BuchiCegarLoop]: Abstraction has 129 states and 271 transitions. [2020-07-01 11:04:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 271 transitions. [2020-07-01 11:04:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 24. [2020-07-01 11:04:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-01 11:04:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 46 transitions. [2020-07-01 11:04:57,901 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 46 transitions. [2020-07-01 11:04:57,902 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 46 transitions. [2020-07-01 11:04:57,902 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:04:57,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 46 transitions. [2020-07-01 11:04:57,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:04:57,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:57,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:57,903 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 11:04:57,903 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:57,904 INFO L794 eck$LassoCheckResult]: Stem: 829#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 830#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 839#L19 [59] L19-->L20-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 840#L20-2 [63] L20-2-->L20-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 835#L20-2 [61] L20-2-->L20-3: Formula: (> v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_6) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 836#L20-3 [45] L20-3-->L19-2: Formula: (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 848#L19-2 [44] L19-2-->L18-2: Formula: (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 (- 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 847#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 846#L19 [50] L19-->L19-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 831#L19-2 [2020-07-01 11:04:57,904 INFO L796 eck$LassoCheckResult]: Loop: 831#L19-2 [44] L19-2-->L18-2: Formula: (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 (- 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 825#L18-2 [42] L18-2-->L19: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 826#L19 [50] L19-->L19-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 831#L19-2 [2020-07-01 11:04:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:57,904 INFO L82 PathProgramCache]: Analyzing trace with hash 900294364, now seen corresponding path program 1 times [2020-07-01 11:04:57,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:57,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160934093] [2020-07-01 11:04:57,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160934093] [2020-07-01 11:04:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328455857] [2020-07-01 11:04:57,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:04:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:57,997 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:04:57,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:58,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:04:58,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-01 11:04:58,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576307220] [2020-07-01 11:04:58,024 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 11:04:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash 73427, now seen corresponding path program 2 times [2020-07-01 11:04:58,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:58,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866616250] [2020-07-01 11:04:58,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:58,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:58,045 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:58,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:58,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:58,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:58,046 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:58,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:58,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:58,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:04:58,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:58,046 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:58,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,107 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:58,107 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:58,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:58,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:58,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:58,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:58,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:58,153 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:58,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:58,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:58,189 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:58,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:58,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:58,224 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:58,256 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:58,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:58,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:58,372 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:58,373 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:58,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:58,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:58,374 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:58,374 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:58,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:58,374 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:58,374 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:04:58,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:58,374 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:58,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:58,430 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:58,430 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:58,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:58,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:58,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:58,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:58,452 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:58,452 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:58,456 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,488 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:58,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:58,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:58,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:58,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:58,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:58,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:58,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:58,492 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,525 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:58,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:58,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:58,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:58,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:58,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:58,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:58,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:58,533 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,566 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:58,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:58,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:58,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:58,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:58,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:04:58,570 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:04:58,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,607 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:58,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:58,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:58,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:58,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:58,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:58,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:58,610 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:58,613 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:58,621 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:04:58,621 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:58,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:58,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:58,630 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:58,631 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:04:58,661 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:58,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:58,684 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:58,685 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:58,690 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:58,690 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:58,718 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:58,718 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:58,720 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:04:58,720 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:04:58,720 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 24 states and 46 transitions. cyclomatic complexity: 26 Second operand 4 states. [2020-07-01 11:04:58,789 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 24 states and 46 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 98 states and 186 transitions. Complement of second has 16 states. [2020-07-01 11:04:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:04:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2020-07-01 11:04:58,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2020-07-01 11:04:58,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:58,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 12 letters. Loop has 3 letters. [2020-07-01 11:04:58,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:58,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 9 letters. Loop has 6 letters. [2020-07-01 11:04:58,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:58,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 186 transitions. [2020-07-01 11:04:58,794 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:04:58,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 0 states and 0 transitions. [2020-07-01 11:04:58,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:04:58,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:04:58,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:04:58,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:04:58,795 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:58,795 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:58,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:04:58,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-01 11:04:58,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-01 11:04:58,800 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 8 states. [2020-07-01 11:04:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:04:58,804 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 11:04:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 11:04:58,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 11:04:58,805 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:04:58,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 11:04:58,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:04:58,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:04:58,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:04:58,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:04:58,806 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:58,806 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:58,806 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:58,806 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:04:58,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:04:58,806 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:04:58,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:04:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:58 BasicIcfg [2020-07-01 11:04:58,812 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:04:58,815 INFO L168 Benchmark]: Toolchain (without parser) took 6143.54 ms. Allocated memory was 649.6 MB in the beginning and 763.4 MB in the end (delta: 113.8 MB). Free memory was 561.7 MB in the beginning and 666.7 MB in the end (delta: -105.0 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,815 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:04:58,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.21 ms. Allocated memory was 649.6 MB in the beginning and 660.1 MB in the end (delta: 10.5 MB). Free memory was 561.7 MB in the beginning and 622.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.25 ms. Allocated memory is still 660.1 MB. Free memory was 622.9 MB in the beginning and 621.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,816 INFO L168 Benchmark]: Boogie Preprocessor took 20.52 ms. Allocated memory is still 660.1 MB. Free memory was 621.8 MB in the beginning and 620.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,816 INFO L168 Benchmark]: RCFGBuilder took 225.81 ms. Allocated memory is still 660.1 MB. Free memory was 620.7 MB in the beginning and 605.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,817 INFO L168 Benchmark]: BlockEncodingV2 took 74.41 ms. Allocated memory is still 660.1 MB. Free memory was 605.1 MB in the beginning and 600.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,817 INFO L168 Benchmark]: TraceAbstraction took 148.28 ms. Allocated memory is still 660.1 MB. Free memory was 599.7 MB in the beginning and 591.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,818 INFO L168 Benchmark]: BuchiAutomizer took 5343.24 ms. Allocated memory was 660.1 MB in the beginning and 763.4 MB in the end (delta: 103.3 MB). Free memory was 591.1 MB in the beginning and 666.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:58,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 14 edges - StatisticsResult: Encoded RCFG 6 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 290.21 ms. Allocated memory was 649.6 MB in the beginning and 660.1 MB in the end (delta: 10.5 MB). Free memory was 561.7 MB in the beginning and 622.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.25 ms. Allocated memory is still 660.1 MB. Free memory was 622.9 MB in the beginning and 621.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.52 ms. Allocated memory is still 660.1 MB. Free memory was 621.8 MB in the beginning and 620.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 225.81 ms. Allocated memory is still 660.1 MB. Free memory was 620.7 MB in the beginning and 605.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.41 ms. Allocated memory is still 660.1 MB. Free memory was 605.1 MB in the beginning and 600.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 148.28 ms. Allocated memory is still 660.1 MB. Free memory was 599.7 MB in the beginning and 591.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 5343.24 ms. Allocated memory was 660.1 MB in the beginning and 763.4 MB in the end (delta: 103.3 MB). Free memory was 591.1 MB in the beginning and 666.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2 * m + 1 and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 136 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 42 SDtfs, 149 SDslu, 86 SDs, 0 SdLazy, 194 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax170 hnf100 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:04:49.413 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_B1SyyS/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:04:59.454 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check