java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:40:01,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:40:01,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:40:01,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-13 21:40:01,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:40:01,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:40:01,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:40:01,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:40:01,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:40:01,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:40:01,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:40:01,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:40:01,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:40:01,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:40:01,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:40:01,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:40:01,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:40:01,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:40:01,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:40:01,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:40:01,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:40:01,900 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:40:01,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:40:01,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:40:01,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:40:01,903 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:40:01,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:40:01,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:40:01,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:40:01,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:40:01,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:40:01,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:40:01,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:40:01,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:40:01,906 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:40:01,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:40:01,906 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:40:01,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:40:01,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:40:01,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:40:01,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:40:01,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:40:01,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:01,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:40:01,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:40:01,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:40:01,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:40:01,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:40:01,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:40:01,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:40:02,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:40:02,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:40:02,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:40:02,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:40:02,201 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:40:02,202 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2019-10-13 21:40:02,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19617e5/920d73d822a549d2a1d3dc5e13f7235e/FLAG2a836b733 [2019-10-13 21:40:02,851 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:40:02,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2019-10-13 21:40:02,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19617e5/920d73d822a549d2a1d3dc5e13f7235e/FLAG2a836b733 [2019-10-13 21:40:03,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19617e5/920d73d822a549d2a1d3dc5e13f7235e [2019-10-13 21:40:03,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:40:03,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:40:03,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:03,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:40:03,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:40:03,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5065f2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03, skipping insertion in model container [2019-10-13 21:40:03,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:40:03,197 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:40:03,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:03,581 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:40:03,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:03,788 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:40:03,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03 WrapperNode [2019-10-13 21:40:03,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:03,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:40:03,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:40:03,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:40:03,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... [2019-10-13 21:40:03,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:40:03,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:40:03,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:40:03,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:40:03,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:40:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:40:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:40:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:40:03,996 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:40:03,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:40:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:40:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:40:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:40:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:40:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:40:05,830 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:40:05,831 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:40:05,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:05 BoogieIcfgContainer [2019-10-13 21:40:05,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:40:05,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:40:05,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:40:05,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:40:05,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:03" (1/3) ... [2019-10-13 21:40:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ed877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:05, skipping insertion in model container [2019-10-13 21:40:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:03" (2/3) ... [2019-10-13 21:40:05,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ed877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:05, skipping insertion in model container [2019-10-13 21:40:05,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:05" (3/3) ... [2019-10-13 21:40:05,842 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2019-10-13 21:40:05,852 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:40:05,861 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:40:05,872 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:40:05,899 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:40:05,899 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:40:05,899 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:40:05,899 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:40:05,900 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:40:05,900 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:40:05,900 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:40:05,900 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:40:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-13 21:40:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 21:40:05,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:05,934 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:40:05,936 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:05,942 INFO L82 PathProgramCache]: Analyzing trace with hash 826821732, now seen corresponding path program 1 times [2019-10-13 21:40:05,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:05,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894566244] [2019-10-13 21:40:05,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:05,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:05,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:06,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894566244] [2019-10-13 21:40:06,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:06,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:06,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611529572] [2019-10-13 21:40:06,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:06,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:06,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:06,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:06,396 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-13 21:40:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:06,888 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-13 21:40:06,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:40:06,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-13 21:40:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:06,914 INFO L225 Difference]: With dead ends: 246 [2019-10-13 21:40:06,915 INFO L226 Difference]: Without dead ends: 157 [2019-10-13 21:40:06,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-13 21:40:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-13 21:40:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-13 21:40:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 273 transitions. [2019-10-13 21:40:07,026 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 273 transitions. Word has length 77 [2019-10-13 21:40:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:07,028 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 273 transitions. [2019-10-13 21:40:07,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:40:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 273 transitions. [2019-10-13 21:40:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:40:07,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:07,037 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:40:07,037 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:07,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1195664901, now seen corresponding path program 1 times [2019-10-13 21:40:07,039 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:07,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500399152] [2019-10-13 21:40:07,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:07,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:07,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:07,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500399152] [2019-10-13 21:40:07,181 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:07,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:40:07,182 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383473306] [2019-10-13 21:40:07,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:40:07,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:40:07,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:40:07,185 INFO L87 Difference]: Start difference. First operand 157 states and 273 transitions. Second operand 6 states. [2019-10-13 21:40:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:07,786 INFO L93 Difference]: Finished difference Result 479 states and 861 transitions. [2019-10-13 21:40:07,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:40:07,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-13 21:40:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:07,792 INFO L225 Difference]: With dead ends: 479 [2019-10-13 21:40:07,792 INFO L226 Difference]: Without dead ends: 327 [2019-10-13 21:40:07,794 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:40:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-13 21:40:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-10-13 21:40:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-13 21:40:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 544 transitions. [2019-10-13 21:40:07,844 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 544 transitions. Word has length 87 [2019-10-13 21:40:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:07,846 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 544 transitions. [2019-10-13 21:40:07,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:40:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 544 transitions. [2019-10-13 21:40:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 21:40:07,854 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:07,854 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:40:07,855 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash -2128686505, now seen corresponding path program 1 times [2019-10-13 21:40:07,855 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:07,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159817429] [2019-10-13 21:40:07,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:07,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:07,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:07,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159817429] [2019-10-13 21:40:07,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:07,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:07,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245850422] [2019-10-13 21:40:07,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:07,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:07,979 INFO L87 Difference]: Start difference. First operand 315 states and 544 transitions. Second operand 3 states. [2019-10-13 21:40:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:08,359 INFO L93 Difference]: Finished difference Result 852 states and 1501 transitions. [2019-10-13 21:40:08,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:40:08,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-13 21:40:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:08,366 INFO L225 Difference]: With dead ends: 852 [2019-10-13 21:40:08,366 INFO L226 Difference]: Without dead ends: 542 [2019-10-13 21:40:08,368 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-13 21:40:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2019-10-13 21:40:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-10-13 21:40:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 858 transitions. [2019-10-13 21:40:08,397 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 858 transitions. Word has length 88 [2019-10-13 21:40:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:08,398 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 858 transitions. [2019-10-13 21:40:08,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:40:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 858 transitions. [2019-10-13 21:40:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 21:40:08,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:08,403 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:40:08,403 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1060658396, now seen corresponding path program 1 times [2019-10-13 21:40:08,404 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:08,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490902700] [2019-10-13 21:40:08,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:08,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:08,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:08,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490902700] [2019-10-13 21:40:08,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172101871] [2019-10-13 21:40:08,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:08,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:40:08,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:40:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:08,675 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:40:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:08,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [622599145] [2019-10-13 21:40:08,819 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-13 21:40:08,819 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:40:08,829 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:40:08,843 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:40:08,844 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:40:09,199 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-13 21:40:09,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:09,684 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:40:09,690 INFO L168 Benchmark]: Toolchain (without parser) took 6574.10 ms. Allocated memory was 138.4 MB in the beginning and 297.3 MB in the end (delta: 158.9 MB). Free memory was 101.3 MB in the beginning and 155.6 MB in the end (delta: -54.3 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:09,691 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:40:09,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.07 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 101.3 MB in the beginning and 172.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:09,694 INFO L168 Benchmark]: Boogie Preprocessor took 125.38 ms. Allocated memory is still 206.0 MB. Free memory was 172.0 MB in the beginning and 167.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:09,696 INFO L168 Benchmark]: RCFGBuilder took 1917.03 ms. Allocated memory was 206.0 MB in the beginning and 253.8 MB in the end (delta: 47.7 MB). Free memory was 167.8 MB in the beginning and 218.0 MB in the end (delta: -50.2 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:09,703 INFO L168 Benchmark]: TraceAbstraction took 3853.66 ms. Allocated memory was 253.8 MB in the beginning and 297.3 MB in the end (delta: 43.5 MB). Free memory was 218.0 MB in the beginning and 155.6 MB in the end (delta: 62.5 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:09,713 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.07 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 101.3 MB in the beginning and 172.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.38 ms. Allocated memory is still 206.0 MB. Free memory was 172.0 MB in the beginning and 167.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1917.03 ms. Allocated memory was 206.0 MB in the beginning and 253.8 MB in the end (delta: 47.7 MB). Free memory was 167.8 MB in the beginning and 218.0 MB in the end (delta: -50.2 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3853.66 ms. Allocated memory was 253.8 MB in the beginning and 297.3 MB in the end (delta: 43.5 MB). Free memory was 218.0 MB in the beginning and 155.6 MB in the end (delta: 62.5 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...