/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:49:51,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:49:51,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:49:51,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:49:51,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:49:51,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:49:51,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:49:51,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:49:51,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:49:51,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:49:51,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:49:51,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:49:51,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:49:51,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:49:51,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:49:51,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:49:51,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:49:51,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:49:51,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:49:51,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:49:51,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:49:51,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:49:51,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:49:51,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:49:51,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:49:51,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:49:51,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:49:51,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:49:51,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:49:51,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:49:51,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:49:51,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:49:51,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:49:51,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:49:51,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:49:51,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:49:51,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:49:51,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:49:51,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:49:51,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:49:51,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:49:51,856 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:49:51,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:49:51,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:49:51,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:49:51,871 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:49:51,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:49:51,872 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:49:51,872 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:49:51,872 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:49:51,872 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:49:51,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:49:51,873 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:49:51,873 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:49:51,873 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:49:51,873 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:49:51,873 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:49:51,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:49:51,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:49:51,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:49:51,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:49:51,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:49:51,874 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:49:51,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:49:51,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:49:51,875 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:49:51,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:49:51,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:49:51,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:49:51,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:49:51,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:49:52,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:49:52,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:49:52,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:49:52,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:49:52,059 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:49:52,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:49:52,123 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_eGja91/tmp/6a455b89f5cc49d49f33374780d84c06/FLAG0cb646036 [2020-07-01 10:49:52,455 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:49:52,456 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:49:52,462 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_eGja91/tmp/6a455b89f5cc49d49f33374780d84c06/FLAG0cb646036 [2020-07-01 10:49:52,938 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_eGja91/tmp/6a455b89f5cc49d49f33374780d84c06 [2020-07-01 10:49:52,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:49:52,951 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:49:52,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:49:52,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:49:52,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:49:52,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:49:52" (1/1) ... [2020-07-01 10:49:52,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab94d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:52, skipping insertion in model container [2020-07-01 10:49:52,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:49:52" (1/1) ... [2020-07-01 10:49:52,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:49:52,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:49:53,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:49:53,220 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:49:53,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:49:53,251 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:49:53,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53 WrapperNode [2020-07-01 10:49:53,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:49:53,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:49:53,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:49:53,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:49:53,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:49:53,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:49:53,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:49:53,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:49:53,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:49:53,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:49:53,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:49:53,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:49:53,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (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 10:49:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:49:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:49:53,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:49:53,551 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:49:53,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:49:53 BoogieIcfgContainer [2020-07-01 10:49:53,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:49:53,555 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:49:53,555 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:49:53,557 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:49:53,558 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:49:53" (1/1) ... [2020-07-01 10:49:53,570 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-07-01 10:49:53,571 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:49:53,572 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:49:53,573 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:49:53,573 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:49:53,575 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:49:53,575 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:49:53,576 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:49:53,591 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:49:53,605 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:49:53,610 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:49:53,611 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:49:53,624 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:49:53,626 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:49:53,628 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:49:53,628 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:49:53,628 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:49:53,629 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:49:53,629 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 10 edges [2020-07-01 10:49:53,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:49:53 BasicIcfg [2020-07-01 10:49:53,630 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:49:53,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:49:53,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:49:53,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:49:53,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:49:52" (1/4) ... [2020-07-01 10:49:53,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3ddea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (2/4) ... [2020-07-01 10:49:53,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3ddea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:49:53" (3/4) ... [2020-07-01 10:49:53,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3ddea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:49:53" (4/4) ... [2020-07-01 10:49:53,638 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:49:53,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:49:53,656 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:49:53,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:49:53,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:49:53,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:49:53,693 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:49:53,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:49:53,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:49:53,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:49:53,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:49:53,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:49:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 10:49:53,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:49:53,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 10:49:53,767 INFO L268 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-07-01 10:49:53,767 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:49:53,768 INFO L268 CegarLoopResult]: For program point L11(lines 11 19) no Hoare annotation was computed. [2020-07-01 10:49:53,768 INFO L268 CegarLoopResult]: For program point L10(lines 10 22) no Hoare annotation was computed. [2020-07-01 10:49:53,768 INFO L271 CegarLoopResult]: At program point L10-1(lines 9 23) the Hoare annotation is: true [2020-07-01 10:49:53,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:49:53 BasicIcfg [2020-07-01 10:49:53,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:49:53,777 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:49:53,777 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:49:53,781 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:49:53,782 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:49:53,782 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:49:52" (1/5) ... [2020-07-01 10:49:53,782 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ec2f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:49:53,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:49:53" (2/5) ... [2020-07-01 10:49:53,783 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ec2f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:49:53,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:49:53" (3/5) ... [2020-07-01 10:49:53,784 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ec2f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:49:53,784 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:49:53" (4/5) ... [2020-07-01 10:49:53,784 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ec2f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:49:53, skipping insertion in model container [2020-07-01 10:49:53,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:49:53,785 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:49:53" (5/5) ... [2020-07-01 10:49:53,786 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:49:53,815 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:49:53,815 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:49:53,815 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:49:53,815 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:49:53,815 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:49:53,816 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:49:53,816 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:49:53,816 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:49:53,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 10:49:53,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:49:53,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:53,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:53,843 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:49:53,843 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:49:53,843 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:49:53,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 10:49:53,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:49:53,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:53,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:53,844 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:49:53,844 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:49:53,849 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L10-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 7#L10-1true [2020-07-01 10:49:53,850 INFO L796 eck$LassoCheckResult]: Loop: 7#L10-1true [52] L10-1-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 3#L10true [54] L10-->L10-1: Formula: (and (= v_ULTIMATE.start_main_~i~0_16 0) (> 0 (+ v_ULTIMATE.start_main_~i~0_17 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 7#L10-1true [2020-07-01 10:49:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:53,856 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 10:49:53,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:53,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610500329] [2020-07-01 10:49:53,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,937 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:53,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2627, now seen corresponding path program 1 times [2020-07-01 10:49:53,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:53,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533301318] [2020-07-01 10:49:53,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,948 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash 67014, now seen corresponding path program 1 times [2020-07-01 10:49:53,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:53,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913062968] [2020-07-01 10:49:53,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:53,961 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,002 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:49:54,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:49:54,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:49:54,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:49:54,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:49:54,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:49:54,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:49:54,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:49:54,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:49:54,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:49:54,005 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:49:54,024 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 10:49:54,034 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 10:49:54,039 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 10:49:54,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:49:54,114 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 10:49:54,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:49:54,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:49:54,132 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:49:54,132 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 10:49:54,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:49:54,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:49:54,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:49:54,171 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 10:49:54,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:49:54,204 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 10:49:54,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:49:54,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:49:54,284 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:49:54,286 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:49:54,286 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:49:54,286 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:49:54,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:49:54,287 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:49:54,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:49:54,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:49:54,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:49:54,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:49:54,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:49:54,287 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:49:54,289 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 10:49:54,294 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 10:49:54,301 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 10:49:54,360 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:49:54,365 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 10:49:54,370 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 10:49:54,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:49:54,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:49:54,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:49:54,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:49:54,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:49:54,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:49:54,403 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 10:49:54,437 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 10:49:54,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:49:54,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:49:54,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:49:54,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:49:54,443 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:49:54,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:49:54,449 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 10:49:54,481 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 10:49:54,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:49:54,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:49:54,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:49:54,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:49:54,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:49:54,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:49:54,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:49:54,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:49:54,495 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:49:54,496 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 10:49:54,506 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:49:54,506 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:49:54,506 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:49:54,507 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:49:54,541 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:49:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:54,578 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:49:54,579 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:54,593 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:49:54,594 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:54,596 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 10:49:54,608 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 10:49:54,613 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 10:49:54,614 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 3 states. [2020-07-01 10:49:54,666 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 3 states. Result 13 states and 27 transitions. Complement of second has 4 states. [2020-07-01 10:49:54,667 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 10:49:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:49:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2020-07-01 10:49:54,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 10:49:54,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:54,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:49:54,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:54,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 10:49:54,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:54,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 27 transitions. [2020-07-01 10:49:54,681 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:49:54,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 11 states and 25 transitions. [2020-07-01 10:49:54,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 10:49:54,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 10:49:54,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 25 transitions. [2020-07-01 10:49:54,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:49:54,687 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 25 transitions. [2020-07-01 10:49:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 25 transitions. [2020-07-01 10:49:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2020-07-01 10:49:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:49:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2020-07-01 10:49:54,716 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-07-01 10:49:54,716 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-07-01 10:49:54,716 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:49:54,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 21 transitions. [2020-07-01 10:49:54,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:49:54,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:54,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:54,718 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:49:54,718 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:49:54,719 INFO L794 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L10-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 55#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 49#L10 [35] L10-->L11: Formula: (and (<= v_ULTIMATE.start_main_~i~0_8 35) (<= 0 (+ v_ULTIMATE.start_main_~i~0_8 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 50#L11 [2020-07-01 10:49:54,719 INFO L796 eck$LassoCheckResult]: Loop: 50#L11 [38] L11-->L10-1: Formula: (and (< v_ULTIMATE.start_main_~i~0_10 0) (= v_ULTIMATE.start_main_~i~0_9 (- 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 51#L10-1 [52] L10-1-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 57#L10 [35] L10-->L11: Formula: (and (<= v_ULTIMATE.start_main_~i~0_8 35) (<= 0 (+ v_ULTIMATE.start_main_~i~0_8 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 50#L11 [2020-07-01 10:49:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash 67026, now seen corresponding path program 1 times [2020-07-01 10:49:54,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139664535] [2020-07-01 10:49:54,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash 67956, now seen corresponding path program 1 times [2020-07-01 10:49:54,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856911703] [2020-07-01 10:49:54,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,738 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1996809731, now seen corresponding path program 1 times [2020-07-01 10:49:54,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501023543] [2020-07-01 10:49:54,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:49:54,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501023543] [2020-07-01 10:49:54,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:49:54,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:49:54,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154923411] [2020-07-01 10:49:54,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:49:54,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:49:54,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:49:54,805 INFO L87 Difference]: Start difference. First operand 9 states and 21 transitions. cyclomatic complexity: 14 Second operand 3 states. [2020-07-01 10:49:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:49:54,851 INFO L93 Difference]: Finished difference Result 15 states and 29 transitions. [2020-07-01 10:49:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:49:54,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 29 transitions. [2020-07-01 10:49:54,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 10:49:54,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 27 transitions. [2020-07-01 10:49:54,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-07-01 10:49:54,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 10:49:54,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 27 transitions. [2020-07-01 10:49:54,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:49:54,857 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 27 transitions. [2020-07-01 10:49:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 27 transitions. [2020-07-01 10:49:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-07-01 10:49:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 10:49:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 23 transitions. [2020-07-01 10:49:54,859 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 23 transitions. [2020-07-01 10:49:54,859 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 23 transitions. [2020-07-01 10:49:54,859 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:49:54,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 23 transitions. [2020-07-01 10:49:54,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 10:49:54,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:54,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:54,861 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:49:54,861 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:49:54,861 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L10-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 87#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 91#L10 [2020-07-01 10:49:54,861 INFO L796 eck$LassoCheckResult]: Loop: 91#L10 [55] L10-->L10-1: Formula: (and (> v_ULTIMATE.start_main_~i~0_17 35) (= v_ULTIMATE.start_main_~i~0_16 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 83#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 91#L10 [2020-07-01 10:49:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 1 times [2020-07-01 10:49:54,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046199982] [2020-07-01 10:49:54,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,868 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2719, now seen corresponding path program 1 times [2020-07-01 10:49:54,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941003888] [2020-07-01 10:49:54,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:54,883 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 10:49:54,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941003888] [2020-07-01 10:49:54,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:49:54,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 10:49:54,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86239666] [2020-07-01 10:49:54,884 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:49:54,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:49:54,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:49:54,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:49:54,885 INFO L87 Difference]: Start difference. First operand 12 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-07-01 10:49:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:49:54,920 INFO L93 Difference]: Finished difference Result 14 states and 22 transitions. [2020-07-01 10:49:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:49:54,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 22 transitions. [2020-07-01 10:49:54,923 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-07-01 10:49:54,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 22 transitions. [2020-07-01 10:49:54,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-07-01 10:49:54,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 10:49:54,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 22 transitions. [2020-07-01 10:49:54,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:49:54,924 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 22 transitions. [2020-07-01 10:49:54,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 22 transitions. [2020-07-01 10:49:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-01 10:49:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 10:49:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 22 transitions. [2020-07-01 10:49:54,927 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 22 transitions. [2020-07-01 10:49:54,927 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 22 transitions. [2020-07-01 10:49:54,927 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:49:54,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 22 transitions. [2020-07-01 10:49:54,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-07-01 10:49:54,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:54,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:54,929 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:49:54,929 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:49:54,929 INFO L794 eck$LassoCheckResult]: Stem: 117#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L10-1: Formula: (= 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_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 118#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 124#L10 [2020-07-01 10:49:54,929 INFO L796 eck$LassoCheckResult]: Loop: 124#L10 [35] L10-->L11: Formula: (and (<= v_ULTIMATE.start_main_~i~0_8 35) (<= 0 (+ v_ULTIMATE.start_main_~i~0_8 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 119#L11 [50] L11-->L14: Formula: (>= v_ULTIMATE.start_main_~i~0_11 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 120#L14 [51] L14-->L10-1: Formula: (and (>= 30 v_ULTIMATE.start_main_~i~0_15) (= v_ULTIMATE.start_main_~i~0_14 (+ v_ULTIMATE.start_main_~i~0_15 (- 1)))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 125#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 124#L10 [2020-07-01 10:49:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 2 times [2020-07-01 10:49:54,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660469697] [2020-07-01 10:49:54,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,936 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2015890, now seen corresponding path program 1 times [2020-07-01 10:49:54,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382818858] [2020-07-01 10:49:54,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,952 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:54,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1996821250, now seen corresponding path program 1 times [2020-07-01 10:49:54,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:54,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571489832] [2020-07-01 10:49:54,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:54,963 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:54,993 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:49:54,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:49:54,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:49:54,993 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:49:54,993 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:49:54,993 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:49:54,994 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:49:54,994 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:49:54,994 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:49:54,994 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:49:54,994 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:49:54,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:49:55,004 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 10:49:55,015 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 10:49:55,079 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:49:55,079 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 10:49:55,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:49:55,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:49:55,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:49:55,091 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 10:49:55,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:49:55,125 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 10:49:55,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:49:55,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:49:55,225 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:49:55,228 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:49:55,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:49:55,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:49:55,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:49:55,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:49:55,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:49:55,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:49:55,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:49:55,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:49:55,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:49:55,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:49:55,231 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 10:49:55,241 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 10:49:55,244 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 10:49:55,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:49:55,301 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:49:55,304 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 10:49:55,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:49:55,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:49:55,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:49:55,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:49:55,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:49:55,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:49:55,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:49:55,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:49:55,316 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:49:55,316 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 10:49:55,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:49:55,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:49:55,324 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:49:55,324 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:49:55,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:49:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:55,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:49:55,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:55,383 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:49:55,384 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:55,415 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 10:49:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:55,423 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:49:55,423 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:49:55,450 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:49:55,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:49:55,483 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:49:55,483 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 10:49:55,483 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 22 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-07-01 10:49:55,602 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 22 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 45 states and 64 transitions. Complement of second has 19 states. [2020-07-01 10:49:55,603 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 10:49:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:49:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2020-07-01 10:49:55,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 31 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 10:49:55,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:55,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2020-07-01 10:49:55,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:55,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 31 transitions. Stem has 2 letters. Loop has 8 letters. [2020-07-01 10:49:55,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:49:55,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2020-07-01 10:49:55,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2020-07-01 10:49:55,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 39 states and 57 transitions. [2020-07-01 10:49:55,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-07-01 10:49:55,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-07-01 10:49:55,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 57 transitions. [2020-07-01 10:49:55,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:49:55,613 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 57 transitions. [2020-07-01 10:49:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 57 transitions. [2020-07-01 10:49:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-07-01 10:49:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 10:49:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2020-07-01 10:49:55,617 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 48 transitions. [2020-07-01 10:49:55,617 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 48 transitions. [2020-07-01 10:49:55,617 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:49:55,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 48 transitions. [2020-07-01 10:49:55,618 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-07-01 10:49:55,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:49:55,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:49:55,619 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:49:55,619 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:49:55,620 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L10-1: Formula: (= 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_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 257#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 268#L10 [2020-07-01 10:49:55,620 INFO L796 eck$LassoCheckResult]: Loop: 268#L10 [35] L10-->L11: Formula: (and (<= v_ULTIMATE.start_main_~i~0_8 35) (<= 0 (+ v_ULTIMATE.start_main_~i~0_8 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 253#L11 [50] L11-->L14: Formula: (>= v_ULTIMATE.start_main_~i~0_11 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 273#L14 [42] L14-->L10-1: Formula: (and (< 30 v_ULTIMATE.start_main_~i~0_13) (= v_ULTIMATE.start_main_~i~0_12 35)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 271#L10-1 [53] L10-1-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 268#L10 [2020-07-01 10:49:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 3 times [2020-07-01 10:49:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:55,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328372368] [2020-07-01 10:49:55,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,627 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2015611, now seen corresponding path program 1 times [2020-07-01 10:49:55,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:55,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696674646] [2020-07-01 10:49:55,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,634 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:49:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1996820971, now seen corresponding path program 1 times [2020-07-01 10:49:55,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:49:55,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416669832] [2020-07-01 10:49:55,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:49:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:49:55,643 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:49:55,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:49:55 BasicIcfg [2020-07-01 10:49:55,693 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:49:55,695 INFO L168 Benchmark]: Toolchain (without parser) took 2744.15 ms. Allocated memory was 649.6 MB in the beginning and 687.9 MB in the end (delta: 38.3 MB). Free memory was 562.8 MB in the beginning and 415.3 MB in the end (delta: 147.5 MB). Peak memory consumption was 185.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,696 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:49:55,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.10 ms. Allocated memory was 649.6 MB in the beginning and 687.9 MB in the end (delta: 38.3 MB). Free memory was 562.8 MB in the beginning and 652.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 687.9 MB. Free memory was 652.3 MB in the beginning and 650.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,698 INFO L168 Benchmark]: Boogie Preprocessor took 19.72 ms. Allocated memory is still 687.9 MB. Free memory was 650.9 MB in the beginning and 649.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,698 INFO L168 Benchmark]: RCFGBuilder took 246.42 ms. Allocated memory is still 687.9 MB. Free memory was 649.6 MB in the beginning and 635.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,699 INFO L168 Benchmark]: BlockEncodingV2 took 74.88 ms. Allocated memory is still 687.9 MB. Free memory was 635.0 MB in the beginning and 629.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,699 INFO L168 Benchmark]: TraceAbstraction took 145.77 ms. Allocated memory is still 687.9 MB. Free memory was 628.3 MB in the beginning and 620.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,700 INFO L168 Benchmark]: BuchiAutomizer took 1915.94 ms. Allocated memory is still 687.9 MB. Free memory was 620.0 MB in the beginning and 415.3 MB in the end (delta: 204.8 MB). Peak memory consumption was 204.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:49:55,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 300.10 ms. Allocated memory was 649.6 MB in the beginning and 687.9 MB in the end (delta: 38.3 MB). Free memory was 562.8 MB in the beginning and 652.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 687.9 MB. Free memory was 652.3 MB in the beginning and 650.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.72 ms. Allocated memory is still 687.9 MB. Free memory was 650.9 MB in the beginning and 649.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 246.42 ms. Allocated memory is still 687.9 MB. Free memory was 649.6 MB in the beginning and 635.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.88 ms. Allocated memory is still 687.9 MB. Free memory was 635.0 MB in the beginning and 629.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.77 ms. Allocated memory is still 687.9 MB. Free memory was 628.3 MB in the beginning and 620.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1915.94 ms. Allocated memory is still 687.9 MB. Free memory was 620.0 MB in the beginning and 415.3 MB in the end (delta: 204.8 MB). Peak memory consumption was 204.8 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: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 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=5occurred 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 (2 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 32 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 32 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 40 SDslu, 0 SDs, 0 SdLazy, 126 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax206 hnf100 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@625c060e=0, \result=0, i=35} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 Loop: [L10] COND TRUE -5 <= i && i <= 35 [L11] COND FALSE !(i < 0) [L14] COND TRUE i > 30 [L15] i = 35 [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:49:49.637 ----------------------------------------------- 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_eGja91/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:49:56.341 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check