/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 10:45:39,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:45:39,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:45:39,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:45:39,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:45:39,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:45:39,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:45:39,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:45:39,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:45:39,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:45:39,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:45:39,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:45:39,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:45:39,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:45:39,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:45:39,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:45:39,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:45:39,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:45:39,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:45:39,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:45:39,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:45:39,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:45:39,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:45:39,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:45:39,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:45:39,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:45:39,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:45:39,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:45:39,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:45:39,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:45:39,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:45:39,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:45:39,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:45:39,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:45:39,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:45:39,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:45:39,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:45:39,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:45:39,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:45:39,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:45:39,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:45:39,311 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:45:39,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:45:39,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:45:39,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:45:39,327 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:45:39,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:45:39,327 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:45:39,327 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:45:39,328 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:45:39,328 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:45:39,328 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:45:39,328 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:45:39,328 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:45:39,328 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:45:39,329 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:45:39,329 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:39,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:45:39,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:45:39,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:45:39,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:45:39,331 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:45:39,331 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:45:39,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:45:39,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:45:39,332 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:45:39,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:45:39,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:45:39,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:45:39,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:45:39,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:45:39,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:45:39,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:45:39,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:45:39,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:45:39,706 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:45:39,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:45:39,823 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_mL2bPq/tmp/3eeb881b055c4480998b69a4b351decb/FLAG68cce6676 [2020-07-01 10:45:40,530 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:45:40,532 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:45:40,539 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_mL2bPq/tmp/3eeb881b055c4480998b69a4b351decb/FLAG68cce6676 [2020-07-01 10:45:40,916 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_mL2bPq/tmp/3eeb881b055c4480998b69a4b351decb [2020-07-01 10:45:41,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:45:41,172 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:45:41,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:45:41,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:45:41,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:45:41,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:45:40" (1/1) ... [2020-07-01 10:45:41,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746dcf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41, skipping insertion in model container [2020-07-01 10:45:41,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:45:40" (1/1) ... [2020-07-01 10:45:41,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:45:41,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:45:41,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:45:41,456 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:45:41,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:45:41,489 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:45:41,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41 WrapperNode [2020-07-01 10:45:41,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:45:41,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:45:41,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:45:41,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:45:41,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:45:41,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:45:41,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:45:41,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:45:41,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:45:41,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:45:41,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:45:41,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:45:41,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (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 10:45:41,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:45:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:45:41,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:45:41,809 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:45:41,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:41 BoogieIcfgContainer [2020-07-01 10:45:41,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:45:41,813 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:45:41,813 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:45:41,815 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:45:41,816 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:41" (1/1) ... [2020-07-01 10:45:41,829 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 13 edges [2020-07-01 10:45:41,831 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:45:41,831 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:45:41,832 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:45:41,832 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:45:41,834 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:45:41,835 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:45:41,835 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:45:41,850 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:45:41,858 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 10:45:41,864 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:45:41,865 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:45:41,880 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:45:41,882 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:45:41,884 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:45:41,884 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:45:41,884 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:45:41,885 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:45:41,885 INFO L313 BlockEncoder]: Encoded RCFG 6 locations, 8 edges [2020-07-01 10:45:41,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:41 BasicIcfg [2020-07-01 10:45:41,886 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:45:41,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:45:41,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:45:41,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:45:41,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:45:40" (1/4) ... [2020-07-01 10:45:41,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2573c354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:45:41, skipping insertion in model container [2020-07-01 10:45:41,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (2/4) ... [2020-07-01 10:45:41,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2573c354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:45:41, skipping insertion in model container [2020-07-01 10:45:41,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:41" (3/4) ... [2020-07-01 10:45:41,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2573c354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:41, skipping insertion in model container [2020-07-01 10:45:41,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:41" (4/4) ... [2020-07-01 10:45:41,898 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:45:41,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:45:41,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:45:41,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:45:41,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:45:41,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:45:41,960 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:45:41,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:45:41,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:45:41,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:45:41,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:45:41,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:45:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-07-01 10:45:41,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:45:41,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-07-01 10:45:42,042 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 21) no Hoare annotation was computed. [2020-07-01 10:45:42,043 INFO L271 CegarLoopResult]: At program point L17-2(lines 17 29) the Hoare annotation is: true [2020-07-01 10:45:42,043 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:45:42,043 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-07-01 10:45:42,043 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2020-07-01 10:45:42,043 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-01 10:45:42,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:42 BasicIcfg [2020-07-01 10:45:42,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:45:42,053 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:45:42,053 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:45:42,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:45:42,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:42,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:45:40" (1/5) ... [2020-07-01 10:45:42,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c50bb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:45:42, skipping insertion in model container [2020-07-01 10:45:42,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:42,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:41" (2/5) ... [2020-07-01 10:45:42,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c50bb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:45:42, skipping insertion in model container [2020-07-01 10:45:42,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:42,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:41" (3/5) ... [2020-07-01 10:45:42,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c50bb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:45:42, skipping insertion in model container [2020-07-01 10:45:42,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:42,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:41" (4/5) ... [2020-07-01 10:45:42,061 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c50bb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:45:42, skipping insertion in model container [2020-07-01 10:45:42,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:42,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:42" (5/5) ... [2020-07-01 10:45:42,063 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:45:42,094 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:45:42,094 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:45:42,094 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:45:42,094 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:45:42,094 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:45:42,095 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:45:42,095 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:45:42,095 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:45:42,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 10:45:42,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:42,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:42,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:42,123 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:45:42,123 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:45:42,124 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:45:42,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 10:45:42,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:42,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:42,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:42,125 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:45:42,125 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:45:42,130 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [35] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_1, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~nondetPos~0] 3#L17-2true [2020-07-01 10:45:42,131 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 8#L19true [40] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~nondetNat~0_5 (- v_ULTIMATE.start_main_~nondetNat~0_6)) (< v_ULTIMATE.start_main_~nondetNat~0_6 0)) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_6} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetNat~0] 6#L19-2true [37] L19-2-->L24: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_4 |v_ULTIMATE.start_main_#t~nondet3_3|) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (* v_ULTIMATE.start_main_~nondetNat~0_8 (- 1))))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetPos~0] 7#L24true [38] L24-->L24-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_5 (- v_ULTIMATE.start_main_~nondetPos~0_6)) (< v_ULTIMATE.start_main_~nondetPos~0_6 0)) InVars {ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_6} OutVars{ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetPos~0] 5#L24-2true [36] L24-2-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_8 (+ v_ULTIMATE.start_main_~nondetPos~0_9 1)) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~nondetPos~0_8))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_9} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nondetPos~0] 3#L17-2true [2020-07-01 10:45:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash 66, now seen corresponding path program 1 times [2020-07-01 10:45:42,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:42,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205031606] [2020-07-01 10:45:42,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:42,232 INFO L82 PathProgramCache]: Analyzing trace with hash 61257276, now seen corresponding path program 1 times [2020-07-01 10:45:42,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:42,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672135175] [2020-07-01 10:45:42,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,264 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1922152091, now seen corresponding path program 1 times [2020-07-01 10:45:42,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:42,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137421853] [2020-07-01 10:45:42,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:42,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:42,426 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:42,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:42,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:42,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:42,427 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:42,427 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:42,427 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:42,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:42,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:45:42,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:42,428 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:42,447 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 10:45:42,462 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 10:45:42,471 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 10:45:42,687 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:42,710 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 10:45:42,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:42,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:42,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:42,727 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 10:45:42,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:42,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:42,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:42,766 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 10:45:42,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:42,801 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 10:45:42,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:42,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:52,401 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:52,406 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:52,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:52,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:52,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:52,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:52,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:52,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:52,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:52,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:45:52,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:52,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:52,412 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 10:45:52,421 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 10:45:52,431 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 10:45:52,653 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:52,660 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:52,667 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 10:45:52,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:52,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:52,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:52,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:52,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:45:52,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:45:52,689 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 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:52,780 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 10:45:52,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:52,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:52,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:52,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:52,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:45:52,787 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:45:52,793 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 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 10:45:52,833 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 10:45:52,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:52,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:52,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:52,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:52,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:52,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:52,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:52,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:52,863 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:45:52,863 INFO L444 ModelExtractionUtils]: 4 out of 8 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 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 10:45:52,877 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:52,878 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:52,878 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:52,879 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:45:52,916 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:52,974 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:45:52,976 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:52,991 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:45:52,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:53,182 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 10:45:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:53,417 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:45:53,418 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:53,611 INFO L98 LoopCannibalizer]: 6 predicates before loop cannibalization 7 predicates after loop cannibalization [2020-07-01 10:45:53,618 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 7 loop predicates [2020-07-01 10:45:53,619 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states. Second operand 6 states. [2020-07-01 10:45:54,415 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states.. Second operand 6 states. Result 79 states and 99 transitions. Complement of second has 46 states. [2020-07-01 10:45:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 25 states 1 stem states 21 non-accepting loop states 3 accepting loop states [2020-07-01 10:45:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 10:45:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 55 transitions. [2020-07-01 10:45:54,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 55 transitions. Stem has 1 letters. Loop has 5 letters. [2020-07-01 10:45:54,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:54,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 55 transitions. Stem has 6 letters. Loop has 5 letters. [2020-07-01 10:45:54,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:54,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 55 transitions. Stem has 1 letters. Loop has 10 letters. [2020-07-01 10:45:54,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:54,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 99 transitions. [2020-07-01 10:45:54,438 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2020-07-01 10:45:54,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 45 states and 57 transitions. [2020-07-01 10:45:54,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-07-01 10:45:54,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2020-07-01 10:45:54,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 57 transitions. [2020-07-01 10:45:54,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:54,447 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2020-07-01 10:45:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 57 transitions. [2020-07-01 10:45:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 14. [2020-07-01 10:45:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 10:45:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-07-01 10:45:54,479 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-07-01 10:45:54,479 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-07-01 10:45:54,479 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:45:54,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2020-07-01 10:45:54,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:54,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:54,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:54,481 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:45:54,481 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:45:54,481 INFO L794 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) 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_~j~0=v_ULTIMATE.start_main_~j~0_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_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_1, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~nondetPos~0] 241#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 248#L19 [46] L19-->L19-2: Formula: (>= v_ULTIMATE.start_main_~nondetNat~0_7 0) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} AuxVars[] AssignedVars[] 244#L19-2 [2020-07-01 10:45:54,482 INFO L796 eck$LassoCheckResult]: Loop: 244#L19-2 [37] L19-2-->L24: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_4 |v_ULTIMATE.start_main_#t~nondet3_3|) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (* v_ULTIMATE.start_main_~nondetNat~0_8 (- 1))))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetPos~0] 245#L24 [38] L24-->L24-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_5 (- v_ULTIMATE.start_main_~nondetPos~0_6)) (< v_ULTIMATE.start_main_~nondetPos~0_6 0)) InVars {ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_6} OutVars{ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetPos~0] 242#L24-2 [36] L24-2-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_8 (+ v_ULTIMATE.start_main_~nondetPos~0_9 1)) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~nondetPos~0_8))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_9} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nondetPos~0] 236#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 237#L19 [40] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~nondetNat~0_5 (- v_ULTIMATE.start_main_~nondetNat~0_6)) (< v_ULTIMATE.start_main_~nondetNat~0_6 0)) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_6} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetNat~0] 244#L19-2 [2020-07-01 10:45:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash 64526, now seen corresponding path program 1 times [2020-07-01 10:45:54,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:54,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46617463] [2020-07-01 10:45:54,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,492 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:54,493 INFO L82 PathProgramCache]: Analyzing trace with hash 63967176, now seen corresponding path program 2 times [2020-07-01 10:45:54,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:54,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863733976] [2020-07-01 10:45:54,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,508 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash 523998171, now seen corresponding path program 1 times [2020-07-01 10:45:54,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:54,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834460682] [2020-07-01 10:45:54,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:54,532 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:54,577 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:54,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:54,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:54,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:54,578 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:54,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:54,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:54,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:54,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:45:54,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:54,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:54,581 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 10:45:54,586 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 10:45:54,591 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 10:45:54,679 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:54,680 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:54,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:54,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:54,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:54,691 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:54,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:54,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:54,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:54,729 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 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:54,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:54,773 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:54,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:54,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:06,891 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 10:46:06,897 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:06,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:06,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:06,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:06,898 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:46:06,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:06,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:06,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:06,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:46:06,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:06,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:06,900 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 10:46:06,904 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 10:46:06,908 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 10:46:07,073 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:07,073 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:07,082 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 10:46:07,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:07,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:07,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:07,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:07,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:07,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:07,092 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 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:07,135 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 10:46:07,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:07,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:07,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:07,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:07,140 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:07,140 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:07,148 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 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:07,183 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 10:46:07,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:07,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:46:07,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:07,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:07,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:07,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:46:07,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:46:07,194 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:46:07,202 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:46:07,202 INFO L444 ModelExtractionUtils]: 3 out of 8 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 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:07,207 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:46:07,207 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:46:07,207 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:46:07,208 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~nondetNat~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-07-01 10:46:07,239 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:46:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:07,262 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:46:07,262 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:07,269 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:46:07,270 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:07,329 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 10:46:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,358 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,364 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:07,364 INFO L98 LoopCannibalizer]: 5 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:46:07,365 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 5 loop predicates [2020-07-01 10:46:07,365 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 19 transitions. cyclomatic complexity: 7 Second operand 6 states. [2020-07-01 10:46:07,527 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 19 transitions. cyclomatic complexity: 7. Second operand 6 states. Result 27 states and 36 transitions. Complement of second has 12 states. [2020-07-01 10:46:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 10:46:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 10:46:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-07-01 10:46:07,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 5 letters. [2020-07-01 10:46:07,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:07,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 5 letters. [2020-07-01 10:46:07,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:07,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 10 letters. [2020-07-01 10:46:07,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:07,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2020-07-01 10:46:07,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 10:46:07,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 32 transitions. [2020-07-01 10:46:07,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 10:46:07,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-07-01 10:46:07,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 32 transitions. [2020-07-01 10:46:07,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:46:07,534 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-07-01 10:46:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 32 transitions. [2020-07-01 10:46:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-01 10:46:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 10:46:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2020-07-01 10:46:07,537 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-07-01 10:46:07,537 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-07-01 10:46:07,537 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:46:07,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 29 transitions. [2020-07-01 10:46:07,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-07-01 10:46:07,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:07,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:07,538 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:46:07,539 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:46:07,539 INFO L794 eck$LassoCheckResult]: Stem: 349#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) 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_~j~0=v_ULTIMATE.start_main_~j~0_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_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_1, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~nondetPos~0] 350#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 360#L19 [46] L19-->L19-2: Formula: (>= v_ULTIMATE.start_main_~nondetNat~0_7 0) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} AuxVars[] AssignedVars[] 361#L19-2 [2020-07-01 10:46:07,539 INFO L796 eck$LassoCheckResult]: Loop: 361#L19-2 [37] L19-2-->L24: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_4 |v_ULTIMATE.start_main_#t~nondet3_3|) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (* v_ULTIMATE.start_main_~nondetNat~0_8 (- 1))))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetPos~0] 357#L24 [47] L24-->L24-2: Formula: (>= v_ULTIMATE.start_main_~nondetPos~0_7 0) InVars {ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_7} OutVars{ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_7} AuxVars[] AssignedVars[] 351#L24-2 [36] L24-2-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_8 (+ v_ULTIMATE.start_main_~nondetPos~0_9 1)) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~nondetPos~0_8))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_9} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nondetPos~0] 345#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 346#L19 [46] L19-->L19-2: Formula: (>= v_ULTIMATE.start_main_~nondetNat~0_7 0) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_7} AuxVars[] AssignedVars[] 361#L19-2 [2020-07-01 10:46:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash 64526, now seen corresponding path program 2 times [2020-07-01 10:46:07,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:07,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245338423] [2020-07-01 10:46:07,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,548 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 64235301, now seen corresponding path program 1 times [2020-07-01 10:46:07,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:07,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745545836] [2020-07-01 10:46:07,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,561 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash 524266296, now seen corresponding path program 1 times [2020-07-01 10:46:07,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:07,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801332429] [2020-07-01 10:46:07,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:07,577 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:07,628 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:07,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:07,628 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:07,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:07,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:07,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:07,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:07,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:07,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:46:07,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:07,630 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:07,631 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 10:46:07,647 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 10:46:07,651 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 10:46:07,717 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:07,768 INFO L404 LassoAnalysis]: Checking for nontermination... 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 10:46:07,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:07,772 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:07,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:07,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:19,895 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 10:46:19,901 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:19,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:19,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:19,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:19,902 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:46:19,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:19,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:19,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:19,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:46:19,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:19,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:19,904 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 10:46:19,926 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 10:46:19,933 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 10:46:20,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:20,034 INFO L489 LassoAnalysis]: Using template 'affine'. 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 10:46:20,038 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 10:46:20,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:20,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:46:20,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:20,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:20,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:20,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:46:20,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:46:20,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:46:20,068 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:46:20,069 INFO L444 ModelExtractionUtils]: 3 out of 8 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 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 10:46:20,078 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:46:20,078 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:46:20,078 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:46:20,078 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~nondetNat~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-07-01 10:46:20,111 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:46:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:20,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:46:20,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:20,145 WARN L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 10:46:20,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:20,214 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 10:46:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,242 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,250 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:20,250 INFO L98 LoopCannibalizer]: 5 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:46:20,250 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 5 loop predicates [2020-07-01 10:46:20,250 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 21 states and 29 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-07-01 10:46:20,451 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 21 states and 29 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 37 states and 57 transitions. Complement of second has 12 states. [2020-07-01 10:46:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 10:46:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 10:46:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-07-01 10:46:20,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 5 letters. [2020-07-01 10:46:20,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:20,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 5 letters. [2020-07-01 10:46:20,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:20,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 10 letters. [2020-07-01 10:46:20,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:20,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 57 transitions. [2020-07-01 10:46:20,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:20,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 15 transitions. [2020-07-01 10:46:20,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 10:46:20,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 10:46:20,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2020-07-01 10:46:20,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:20,459 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-07-01 10:46:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2020-07-01 10:46:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-07-01 10:46:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 10:46:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-07-01 10:46:20,460 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-07-01 10:46:20,461 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-07-01 10:46:20,461 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:46:20,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-07-01 10:46:20,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:20,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:20,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:20,462 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 10:46:20,462 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:46:20,463 INFO L794 eck$LassoCheckResult]: Stem: 474#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) 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_~j~0=v_ULTIMATE.start_main_~j~0_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_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_1, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetNat~0, ULTIMATE.start_main_~nondetPos~0] 471#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 472#L19 [40] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~nondetNat~0_5 (- v_ULTIMATE.start_main_~nondetNat~0_6)) (< v_ULTIMATE.start_main_~nondetNat~0_6 0)) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_6} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetNat~0] 480#L19-2 [37] L19-2-->L24: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_4 |v_ULTIMATE.start_main_#t~nondet3_3|) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (* v_ULTIMATE.start_main_~nondetNat~0_8 (- 1))))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetPos~0] 481#L24 [47] L24-->L24-2: Formula: (>= v_ULTIMATE.start_main_~nondetPos~0_7 0) InVars {ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_7} OutVars{ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_7} AuxVars[] AssignedVars[] 475#L24-2 [2020-07-01 10:46:20,463 INFO L796 eck$LassoCheckResult]: Loop: 475#L24-2 [36] L24-2-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_8 (+ v_ULTIMATE.start_main_~nondetPos~0_9 1)) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~nondetPos~0_8))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_9} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nondetPos~0] 476#L17-2 [34] L17-2-->L19: Formula: (and (<= (+ v_ULTIMATE.start_main_~j~0_7 1) v_ULTIMATE.start_main_~i~0_7) (= v_ULTIMATE.start_main_~nondetNat~0_4 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_4, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~nondetNat~0] 482#L19 [40] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~nondetNat~0_5 (- v_ULTIMATE.start_main_~nondetNat~0_6)) (< v_ULTIMATE.start_main_~nondetNat~0_6 0)) InVars {ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_6} OutVars{ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetNat~0] 478#L19-2 [37] L19-2-->L24: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_4 |v_ULTIMATE.start_main_#t~nondet3_3|) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (* v_ULTIMATE.start_main_~nondetNat~0_8 (- 1))))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~nondetNat~0=v_ULTIMATE.start_main_~nondetNat~0_8, ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nondetPos~0] 479#L24 [38] L24-->L24-2: Formula: (and (= v_ULTIMATE.start_main_~nondetPos~0_5 (- v_ULTIMATE.start_main_~nondetPos~0_6)) (< v_ULTIMATE.start_main_~nondetPos~0_6 0)) InVars {ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_6} OutVars{ULTIMATE.start_main_~nondetPos~0=v_ULTIMATE.start_main_~nondetPos~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~nondetPos~0] 475#L24-2 [2020-07-01 10:46:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:20,463 INFO L82 PathProgramCache]: Analyzing trace with hash 62004914, now seen corresponding path program 1 times [2020-07-01 10:46:20,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:20,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635228557] [2020-07-01 10:46:20,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,476 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash 62928426, now seen corresponding path program 3 times [2020-07-01 10:46:20,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:20,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474149373] [2020-07-01 10:46:20,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,490 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash -558195175, now seen corresponding path program 1 times [2020-07-01 10:46:20,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:20,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364343618] [2020-07-01 10:46:20,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:20,511 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:20,575 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:20,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:20,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:20,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:20,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:20,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:20,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:20,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:20,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:46:20,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:20,576 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:20,578 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 10:46:20,610 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 10:46:20,617 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 10:46:20,695 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:20,695 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:20,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:20,698 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:20,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:20,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:29,237 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:46:29,241 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:29,242 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:29,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:29,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:29,242 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:46:29,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:29,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:29,243 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:29,243 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:46:29,243 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:29,243 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:29,245 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 10:46:29,267 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 10:46:29,273 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 10:46:29,381 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:29,382 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:29,385 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 10:46:29,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:29,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:46:29,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:29,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:29,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:29,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:46:29,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:46:29,397 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:46:29,405 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:46:29,405 INFO L444 ModelExtractionUtils]: 3 out of 8 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 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:29,411 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:46:29,411 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:46:29,411 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:46:29,412 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nondetPos~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 - 1*ULTIMATE.start_main_~nondetPos~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:46:29,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:46:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:29,473 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:46:29,473 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:29,481 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:46:29,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:29,558 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 10:46:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:29,628 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:29,635 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:46:29,635 INFO L98 LoopCannibalizer]: 6 predicates before loop cannibalization 6 predicates after loop cannibalization [2020-07-01 10:46:29,636 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 6 loop predicates [2020-07-01 10:46:29,636 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 6 states. [2020-07-01 10:46:29,815 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 24 states and 28 transitions. Complement of second has 18 states. [2020-07-01 10:46:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 2 accepting loop states [2020-07-01 10:46:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 10:46:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2020-07-01 10:46:29,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 5 letters. Loop has 5 letters. [2020-07-01 10:46:29,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:29,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 10 letters. Loop has 5 letters. [2020-07-01 10:46:29,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:29,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 5 letters. Loop has 10 letters. [2020-07-01 10:46:29,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:29,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 28 transitions. [2020-07-01 10:46:29,821 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:46:29,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2020-07-01 10:46:29,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:46:29,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:46:29,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:46:29,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:29,822 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:46:29,822 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:46:29,822 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:46:29,822 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:46:29,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:46:29,822 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:46:29,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:46:29,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:46:29 BasicIcfg [2020-07-01 10:46:29,830 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:46:29,833 INFO L168 Benchmark]: Toolchain (without parser) took 48773.52 ms. Allocated memory was 514.9 MB in the beginning and 612.9 MB in the end (delta: 98.0 MB). Free memory was 436.2 MB in the beginning and 442.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,833 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 514.9 MB. Free memory is still 455.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:46:29,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.33 ms. Allocated memory was 514.9 MB in the beginning and 545.3 MB in the end (delta: 30.4 MB). Free memory was 423.0 MB in the beginning and 514.7 MB in the end (delta: -91.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.84 ms. Allocated memory is still 545.3 MB. Free memory was 514.7 MB in the beginning and 512.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,837 INFO L168 Benchmark]: Boogie Preprocessor took 21.33 ms. Allocated memory is still 545.3 MB. Free memory was 512.9 MB in the beginning and 512.0 MB in the end (delta: 890.5 kB). Peak memory consumption was 890.5 kB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,837 INFO L168 Benchmark]: RCFGBuilder took 263.50 ms. Allocated memory is still 545.3 MB. Free memory was 512.0 MB in the beginning and 500.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,838 INFO L168 Benchmark]: BlockEncodingV2 took 72.82 ms. Allocated memory is still 545.3 MB. Free memory was 500.0 MB in the beginning and 494.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,839 INFO L168 Benchmark]: TraceAbstraction took 165.71 ms. Allocated memory is still 545.3 MB. Free memory was 493.8 MB in the beginning and 485.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,839 INFO L168 Benchmark]: BuchiAutomizer took 47776.29 ms. Allocated memory was 545.3 MB in the beginning and 612.9 MB in the end (delta: 67.6 MB). Free memory was 485.8 MB in the beginning and 442.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 111.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:29,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 13 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 514.9 MB. Free memory is still 455.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 317.33 ms. Allocated memory was 514.9 MB in the beginning and 545.3 MB in the end (delta: 30.4 MB). Free memory was 423.0 MB in the beginning and 514.7 MB in the end (delta: -91.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.84 ms. Allocated memory is still 545.3 MB. Free memory was 514.7 MB in the beginning and 512.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 21.33 ms. Allocated memory is still 545.3 MB. Free memory was 512.9 MB in the beginning and 512.0 MB in the end (delta: 890.5 kB). Peak memory consumption was 890.5 kB. Max. memory is 50.3 GB. * RCFGBuilder took 263.50 ms. Allocated memory is still 545.3 MB. Free memory was 512.0 MB in the beginning and 500.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.82 ms. Allocated memory is still 545.3 MB. Free memory was 500.0 MB in the beginning and 494.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 165.71 ms. Allocated memory is still 545.3 MB. Free memory was 493.8 MB in the beginning and 485.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 47776.29 ms. Allocated memory was 545.3 MB in the beginning and 612.9 MB in the end (delta: 67.6 MB). Free memory was 485.8 MB in the beginning and 442.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 111.0 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: 17]: 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function -1 * j + i and consists of 25 locations. One nondeterministic module has affine ranking function i + -1 * nondetNat + -1 * j and consists of 7 locations. One nondeterministic module has affine ranking function i + -1 * nondetNat + -1 * j and consists of 7 locations. One nondeterministic module has affine ranking function -1 * j + -1 * nondetPos + i and consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 47.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 45.1s. Construction of modules took 0.2s. Büchi inclusion checks took 2.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 21 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 88 SDslu, 80 SDs, 0 SdLazy, 186 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital34 mio100 ax134 hnf95 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq172 hnf92 smp100 dnf100 smp100 tf103 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 42.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:45:36.277 ----------------------------------------------- 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_mL2bPq/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:46:30.295 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check