/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 12:01:06,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:01:06,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:01:06,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:01:06,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:01:06,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:01:06,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:01:06,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:01:06,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:01:06,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:01:06,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:01:06,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:01:06,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:01:06,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:01:06,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:01:06,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:01:06,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:01:06,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:01:06,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:01:06,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:01:06,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:01:06,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:01:06,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:01:06,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:01:06,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:01:06,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:01:06,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:01:06,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:01:06,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:01:06,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:01:06,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:01:06,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:01:06,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:01:06,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:01:06,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:01:06,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:01:06,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:01:06,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:01:06,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:01:06,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:01:06,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:01:06,643 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:01:06,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:01:06,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:01:06,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:01:06,658 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:01:06,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:01:06,659 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:01:06,659 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:01:06,659 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:01:06,659 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:01:06,659 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:01:06,659 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:01:06,660 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:01:06,660 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:01:06,660 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:01:06,660 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:06,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:01:06,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:01:06,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:01:06,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:01:06,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:01:06,661 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:01:06,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:01:06,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:01:06,662 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:01:06,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:01:06,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:01:06,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:01:06,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:01:06,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:01:06,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:01:06,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:01:06,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:01:06,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:01:06,846 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:01:06,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:01:06,912 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_wJtEfE/tmp/d71de7d309b24cc7ae72711d7cea6aba/FLAG4bec18f7e [2020-07-01 12:01:07,236 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:01:07,237 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:01:07,243 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_wJtEfE/tmp/d71de7d309b24cc7ae72711d7cea6aba/FLAG4bec18f7e [2020-07-01 12:01:07,645 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_wJtEfE/tmp/d71de7d309b24cc7ae72711d7cea6aba [2020-07-01 12:01:07,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:01:07,658 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:01:07,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:01:07,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:01:07,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:01:07,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:07,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59230eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07, skipping insertion in model container [2020-07-01 12:01:07,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:07,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:01:07,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:01:07,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:01:07,931 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:01:07,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:01:07,962 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:01:07,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07 WrapperNode [2020-07-01 12:01:07,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:01:07,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:01:07,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:01:07,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:01:07,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:07,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:01:08,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:01:08,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:01:08,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:01:08,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (1/1) ... [2020-07-01 12:01:08,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:01:08,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:01:08,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:01:08,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:01:08,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (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 12:01:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:01:08,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:01:08,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:01:08,277 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-01 12:01:08,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:08 BoogieIcfgContainer [2020-07-01 12:01:08,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:01:08,282 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:01:08,282 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:01:08,284 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:01:08,285 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:08" (1/1) ... [2020-07-01 12:01:08,296 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2020-07-01 12:01:08,298 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:01:08,298 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:01:08,299 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:01:08,299 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:01:08,301 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:01:08,302 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:01:08,302 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:01:08,316 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:01:08,323 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 12:01:08,328 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 12:01:08,330 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:01:08,346 INFO L100 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2020-07-01 12:01:08,349 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:01:08,350 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:01:08,350 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:01:08,350 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:01:08,351 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:01:08,351 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 12:01:08,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:08 BasicIcfg [2020-07-01 12:01:08,351 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:01:08,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:01:08,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:01:08,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:01:08,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:01:07" (1/4) ... [2020-07-01 12:01:08,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6d5f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (2/4) ... [2020-07-01 12:01:08,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6d5f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:08" (3/4) ... [2020-07-01 12:01:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6d5f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:08" (4/4) ... [2020-07-01 12:01:08,362 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:01:08,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:01:08,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:01:08,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:01:08,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:01:08,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:01:08,417 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:01:08,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:01:08,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:01:08,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:01:08,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:01:08,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:01:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 12:01:08,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:01:08,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 12:01:08,494 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:01:08,494 INFO L271 CegarLoopResult]: At program point L9-2(lines 9 12) the Hoare annotation is: true [2020-07-01 12:01:08,495 INFO L271 CegarLoopResult]: At program point L6-2(lines 6 14) the Hoare annotation is: true [2020-07-01 12:01:08,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:08 BasicIcfg [2020-07-01 12:01:08,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:01:08,504 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:01:08,504 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:01:08,507 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:01:08,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:08,508 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:01:07" (1/5) ... [2020-07-01 12:01:08,509 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34542153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:08,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:07" (2/5) ... [2020-07-01 12:01:08,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34542153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:08,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:08" (3/5) ... [2020-07-01 12:01:08,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34542153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:08,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:08" (4/5) ... [2020-07-01 12:01:08,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34542153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:08, skipping insertion in model container [2020-07-01 12:01:08,511 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:08,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:08" (5/5) ... [2020-07-01 12:01:08,513 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:01:08,541 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:01:08,541 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:01:08,542 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:01:08,542 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:01:08,542 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:01:08,542 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:01:08,542 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:01:08,542 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:01:08,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:01:08,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:01:08,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:08,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:08,570 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:01:08,570 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:01:08,570 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:01:08,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:01:08,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:01:08,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:08,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:08,571 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:01:08,571 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:01:08,577 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L6-2: Formula: (and (= v_ULTIMATE.start_test_fun_~x_1 |v_ULTIMATE.start_test_fun_#in~x_1|) (= |v_ULTIMATE.start_test_fun_#in~x_1| |v_ULTIMATE.start_main_#t~nondet0_1|) (= v_ULTIMATE.start_test_fun_~c~0_1 0) (= |v_ULTIMATE.start_test_fun_#in~y_1| |v_ULTIMATE.start_main_#t~nondet1_1|) (= v_ULTIMATE.start_test_fun_~y_1 |v_ULTIMATE.start_test_fun_#in~y_1|)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_1, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_1|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_1, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_1|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_1|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 5#L6-2true [2020-07-01 12:01:08,577 INFO L796 eck$LassoCheckResult]: Loop: 5#L6-2true [44] L6-2-->L9-2: Formula: (and (= v_ULTIMATE.start_test_fun_~y_6 1) (<= 0 v_ULTIMATE.start_test_fun_~x_9) (= v_ULTIMATE.start_test_fun_~x_8 (+ v_ULTIMATE.start_test_fun_~x_9 1))) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_9} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_8} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_test_fun_~x] 4#L9-2true [48] L9-2-->L6-2: Formula: (and (<= v_ULTIMATE.start_test_fun_~x_12 v_ULTIMATE.start_test_fun_~y_7) (= (+ v_ULTIMATE.start_test_fun_~x_12 (- 2)) v_ULTIMATE.start_test_fun_~x_11)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_12} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_11} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 5#L6-2true [2020-07-01 12:01:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:08,584 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 12:01:08,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:08,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367006773] [2020-07-01 12:01:08,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,668 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:08,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2373, now seen corresponding path program 1 times [2020-07-01 12:01:08,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:08,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240414216] [2020-07-01 12:01:08,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash 63877, now seen corresponding path program 1 times [2020-07-01 12:01:08,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:08,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355511085] [2020-07-01 12:01:08,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:08,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:08,767 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:08,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:08,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:08,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:08,769 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:01:08,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:08,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:08,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:08,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:01:08,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:08,770 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:08,785 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 12:01:08,858 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:08,859 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 12:01:08,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:08,867 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 12:01:08,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:08,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:08,947 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:01:08,950 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:08,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:08,950 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:08,950 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:08,950 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:01:08,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:08,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:08,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:08,951 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:01:08,951 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:08,951 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:08,952 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 12:01:09,024 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:09,029 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,034 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 12:01:09,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:09,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:09,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:09,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:09,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:09,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:09,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:09,046 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:01:09,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:01:09,055 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:01:09,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:01:09,063 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:01:09,064 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_fun_~x) = 2*ULTIMATE.start_test_fun_~x + 1 Supporting invariants [] [2020-07-01 12:01:09,098 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:01:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:09,137 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:01:09,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:09,150 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:01:09,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:09,178 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 12:01:09,212 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:01:09,259 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:01:09,260 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 12:01:09,290 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-07-01 12:01:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:01:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:01:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 12:01:09,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:01:09,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:01:09,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 12:01:09,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-07-01 12:01:09,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:01:09,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-07-01 12:01:09,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 12:01:09,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 12:01:09,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-07-01 12:01:09,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:01:09,310 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 12:01:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-07-01 12:01:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-07-01 12:01:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:01:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-01 12:01:09,338 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 12:01:09,338 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 12:01:09,338 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:01:09,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-07-01 12:01:09,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:01:09,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:09,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:09,340 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:01:09,340 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:01:09,340 INFO L794 eck$LassoCheckResult]: Stem: 43#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L6-2: Formula: (and (= v_ULTIMATE.start_test_fun_~x_1 |v_ULTIMATE.start_test_fun_#in~x_1|) (= |v_ULTIMATE.start_test_fun_#in~x_1| |v_ULTIMATE.start_main_#t~nondet0_1|) (= v_ULTIMATE.start_test_fun_~c~0_1 0) (= |v_ULTIMATE.start_test_fun_#in~y_1| |v_ULTIMATE.start_main_#t~nondet1_1|) (= v_ULTIMATE.start_test_fun_~y_1 |v_ULTIMATE.start_test_fun_#in~y_1|)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_1, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_1|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_1, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_1|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_1|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 44#L6-2 [44] L6-2-->L9-2: Formula: (and (= v_ULTIMATE.start_test_fun_~y_6 1) (<= 0 v_ULTIMATE.start_test_fun_~x_9) (= v_ULTIMATE.start_test_fun_~x_8 (+ v_ULTIMATE.start_test_fun_~x_9 1))) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_9} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_8} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_test_fun_~x] 45#L9-2 [2020-07-01 12:01:09,340 INFO L796 eck$LassoCheckResult]: Loop: 45#L9-2 [38] L9-2-->L9-2: Formula: (and (= v_ULTIMATE.start_test_fun_~y_4 (+ v_ULTIMATE.start_test_fun_~y_5 1)) (= v_ULTIMATE.start_test_fun_~c~0_3 (+ v_ULTIMATE.start_test_fun_~c~0_4 1)) (< v_ULTIMATE.start_test_fun_~y_5 v_ULTIMATE.start_test_fun_~x_4)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_5, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_4, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_4} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_4, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_4, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_3} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_test_fun_~c~0] 45#L9-2 [2020-07-01 12:01:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2059, now seen corresponding path program 1 times [2020-07-01 12:01:09,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:09,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907002202] [2020-07-01 12:01:09,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:09,352 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-07-01 12:01:09,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:09,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070431627] [2020-07-01 12:01:09,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,360 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash 63867, now seen corresponding path program 1 times [2020-07-01 12:01:09,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:09,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456972760] [2020-07-01 12:01:09,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:09,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:09,400 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:09,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:09,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:09,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:09,401 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:01:09,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:09,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:09,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:09,402 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:01:09,402 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:09,402 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:09,403 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 12:01:09,412 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 12:01:09,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:09,459 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:09,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:09,464 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:09,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:09,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:09,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:09,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_fun_~c~0=0} Honda state: {ULTIMATE.start_test_fun_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_test_fun_~c~0=6}, {ULTIMATE.start_test_fun_~c~0=-5}, {ULTIMATE.start_test_fun_~c~0=0}] Lambdas: [1, 1, 3] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:09,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:09,549 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:09,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:09,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:09,744 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:01:09,747 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:09,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:09,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:09,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:09,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:01:09,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:09,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:09,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:01:09,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:09,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:09,749 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 12:01:09,754 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 12:01:09,791 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:09,791 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,814 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 12:01:09,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:09,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:09,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:09,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:09,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:09,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:09,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:09,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,854 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 12:01:09,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:09,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:09,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:09,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:09,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:09,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:09,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:09,861 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:01:09,864 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:01:09,865 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:09,869 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:01:09,869 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:01:09,869 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:01:09,869 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_fun_~x, ULTIMATE.start_test_fun_~y) = 1*ULTIMATE.start_test_fun_~x - 1*ULTIMATE.start_test_fun_~y Supporting invariants [] [2020-07-01 12:01:09,900 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:01:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:09,940 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:01:09,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:09,947 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:01:09,948 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:09,948 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 12:01:09,948 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 12:01:09,948 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 12:01:09,949 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-07-01 12:01:09,961 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-07-01 12:01:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:01:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 12:01:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 12:01:09,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 12:01:09,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 12:01:09,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:01:09,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:09,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-07-01 12:01:09,966 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:01:09,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2020-07-01 12:01:09,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:01:09,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:01:09,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:01:09,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:01:09,967 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:09,967 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:09,967 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:09,967 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:01:09,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:01:09,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:01:09,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:01:09,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:09 BasicIcfg [2020-07-01 12:01:09,973 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:01:09,976 INFO L168 Benchmark]: Toolchain (without parser) took 2317.29 ms. Allocated memory was 514.9 MB in the beginning and 589.3 MB in the end (delta: 74.4 MB). Free memory was 438.5 MB in the beginning and 529.1 MB in the end (delta: -90.6 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:01:09,977 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:01:09,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.36 ms. Allocated memory was 514.9 MB in the beginning and 564.7 MB in the end (delta: 49.8 MB). Free memory was 438.5 MB in the beginning and 532.2 MB in the end (delta: -93.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.90 ms. Allocated memory is still 564.7 MB. Free memory was 532.2 MB in the beginning and 530.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,979 INFO L168 Benchmark]: Boogie Preprocessor took 21.09 ms. Allocated memory is still 564.7 MB. Free memory was 530.9 MB in the beginning and 529.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,979 INFO L168 Benchmark]: RCFGBuilder took 258.60 ms. Allocated memory is still 564.7 MB. Free memory was 529.5 MB in the beginning and 516.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,980 INFO L168 Benchmark]: BlockEncodingV2 took 70.09 ms. Allocated memory is still 564.7 MB. Free memory was 516.2 MB in the beginning and 511.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,980 INFO L168 Benchmark]: TraceAbstraction took 150.45 ms. Allocated memory is still 564.7 MB. Free memory was 510.8 MB in the beginning and 501.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:09,981 INFO L168 Benchmark]: BuchiAutomizer took 1469.79 ms. Allocated memory was 564.7 MB in the beginning and 589.3 MB in the end (delta: 24.6 MB). Free memory was 501.9 MB in the beginning and 529.1 MB in the end (delta: -27.2 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:01:09,985 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 304.36 ms. Allocated memory was 514.9 MB in the beginning and 564.7 MB in the end (delta: 49.8 MB). Free memory was 438.5 MB in the beginning and 532.2 MB in the end (delta: -93.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.90 ms. Allocated memory is still 564.7 MB. Free memory was 532.2 MB in the beginning and 530.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 21.09 ms. Allocated memory is still 564.7 MB. Free memory was 530.9 MB in the beginning and 529.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 258.60 ms. Allocated memory is still 564.7 MB. Free memory was 529.5 MB in the beginning and 516.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 70.09 ms. Allocated memory is still 564.7 MB. Free memory was 516.2 MB in the beginning and 511.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.45 ms. Allocated memory is still 564.7 MB. Free memory was 510.8 MB in the beginning and 501.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1469.79 ms. Allocated memory was 564.7 MB in the beginning and 589.3 MB in the end (delta: 24.6 MB). Free memory was 501.9 MB in the beginning and 529.1 MB in the end (delta: -27.2 MB). There was no memory consumed. 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: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 10 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp94 dnf100 smp100 tf111 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:01:04.437 ----------------------------------------------- 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_wJtEfE/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:01:10.420 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check