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/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:22,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:58:22,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:58:22,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:58:22,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:22,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:22,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:22,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:22,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:22,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:22,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:22,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:22,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:22,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:22,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:22,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:22,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:58:22,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:22,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:22,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:22,466 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 [2019-10-07 00:58:22,483 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:22,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:22,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:22,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:22,488 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:22,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:22,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:22,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:22,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:22,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:22,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:22,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:22,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:22,491 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:22,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:22,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:22,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:22,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:22,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:22,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:22,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:22,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:22,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:22,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:22,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:22,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:22,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:22,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:22,494 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 [2019-10-07 00:58:22,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:22,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:22,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:22,807 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:22,807 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:22,808 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-07 00:58:22,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5db11a54/c1836cd9782a4d12beab13f7f6aa6357/FLAG65636aee3 [2019-10-07 00:58:23,377 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:23,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-07 00:58:23,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5db11a54/c1836cd9782a4d12beab13f7f6aa6357/FLAG65636aee3 [2019-10-07 00:58:23,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5db11a54/c1836cd9782a4d12beab13f7f6aa6357 [2019-10-07 00:58:23,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:23,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:23,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:23,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:23,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:23,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:23" (1/1) ... [2019-10-07 00:58:23,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b11530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:23, skipping insertion in model container [2019-10-07 00:58:23,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:23" (1/1) ... [2019-10-07 00:58:23,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:23,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:58:24,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:24,297 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:58:24,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:24,465 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:58:24,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24 WrapperNode [2019-10-07 00:58:24,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:24,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:58:24,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:58:24,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:58:24,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (1/1) ... [2019-10-07 00:58:24,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:58:24,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:58:24,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:58:24,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:58:24,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (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 [2019-10-07 00:58:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:58:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:58:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:58:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:58:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:58:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:58:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:58:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:58:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:58:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:58:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:58:26,795 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:58:26,795 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:58:26,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:26 BoogieIcfgContainer [2019-10-07 00:58:26,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:58:26,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:58:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:58:26,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:58:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:23" (1/3) ... [2019-10-07 00:58:26,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3f0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:26, skipping insertion in model container [2019-10-07 00:58:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:24" (2/3) ... [2019-10-07 00:58:26,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3f0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:26, skipping insertion in model container [2019-10-07 00:58:26,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:26" (3/3) ... [2019-10-07 00:58:26,807 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2019-10-07 00:58:26,818 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:58:26,826 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:58:26,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:58:26,874 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:58:26,874 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:58:26,875 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:58:26,875 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:58:26,875 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:58:26,875 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:58:26,875 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:58:26,875 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:58:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-07 00:58:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 00:58:26,911 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:26,912 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:26,914 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash -219364553, now seen corresponding path program 1 times [2019-10-07 00:58:26,926 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:26,926 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:26,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:26,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:27,365 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:27,366 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:27,366 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:58:27,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:58:27,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:58:27,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:58:27,391 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2019-10-07 00:58:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:28,270 INFO L93 Difference]: Finished difference Result 361 states and 678 transitions. [2019-10-07 00:58:28,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:58:28,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2019-10-07 00:58:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:28,303 INFO L225 Difference]: With dead ends: 361 [2019-10-07 00:58:28,303 INFO L226 Difference]: Without dead ends: 259 [2019-10-07 00:58:28,309 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:58:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-07 00:58:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2019-10-07 00:58:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-07 00:58:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 475 transitions. [2019-10-07 00:58:28,405 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 475 transitions. Word has length 86 [2019-10-07 00:58:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:28,406 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 475 transitions. [2019-10-07 00:58:28,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:58:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 475 transitions. [2019-10-07 00:58:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 00:58:28,413 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:28,413 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:28,414 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1220270232, now seen corresponding path program 1 times [2019-10-07 00:58:28,415 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:28,415 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:28,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:28,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:28,520 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:28,520 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:28,521 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:58:28,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:58:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:58:28,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:58:28,523 INFO L87 Difference]: Start difference. First operand 259 states and 475 transitions. Second operand 6 states. [2019-10-07 00:58:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:29,159 INFO L93 Difference]: Finished difference Result 701 states and 1310 transitions. [2019-10-07 00:58:29,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:58:29,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-10-07 00:58:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:29,164 INFO L225 Difference]: With dead ends: 701 [2019-10-07 00:58:29,165 INFO L226 Difference]: Without dead ends: 447 [2019-10-07 00:58:29,168 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:58:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-07 00:58:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2019-10-07 00:58:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-07 00:58:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 786 transitions. [2019-10-07 00:58:29,208 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 786 transitions. Word has length 104 [2019-10-07 00:58:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:29,208 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 786 transitions. [2019-10-07 00:58:29,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:58:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 786 transitions. [2019-10-07 00:58:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 00:58:29,215 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:29,215 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:29,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1842865376, now seen corresponding path program 1 times [2019-10-07 00:58:29,217 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:29,217 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:29,217 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:29,217 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:29,318 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:29,318 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:29,318 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:29,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:29,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:29,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:29,320 INFO L87 Difference]: Start difference. First operand 441 states and 786 transitions. Second operand 3 states. [2019-10-07 00:58:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:29,769 INFO L93 Difference]: Finished difference Result 1133 states and 2051 transitions. [2019-10-07 00:58:29,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:29,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-07 00:58:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:29,780 INFO L225 Difference]: With dead ends: 1133 [2019-10-07 00:58:29,780 INFO L226 Difference]: Without dead ends: 697 [2019-10-07 00:58:29,783 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-07 00:58:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2019-10-07 00:58:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-07 00:58:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1206 transitions. [2019-10-07 00:58:29,828 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1206 transitions. Word has length 105 [2019-10-07 00:58:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:29,829 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 1206 transitions. [2019-10-07 00:58:29,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1206 transitions. [2019-10-07 00:58:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-07 00:58:29,838 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:29,839 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-07 00:58:29,839 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 880772869, now seen corresponding path program 1 times [2019-10-07 00:58:29,840 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:29,840 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:29,840 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:29,841 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:30,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:30,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:30,098 INFO L95 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 [2019-10-07 00:58:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:30,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:58:30,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:30,290 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:30,424 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:58:30,464 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-07 00:58:30,465 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:58:30,471 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:58:30,479 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:58:30,480 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:58:30,755 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-07 00:58:31,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:31,336 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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:99) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:58:31,343 INFO L168 Benchmark]: Toolchain (without parser) took 7640.10 ms. Allocated memory was 138.9 MB in the beginning and 330.8 MB in the end (delta: 191.9 MB). Free memory was 100.5 MB in the beginning and 180.9 MB in the end (delta: -80.4 MB). Peak memory consumption was 111.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:31,343 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 00:58:31,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.54 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 170.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:31,345 INFO L168 Benchmark]: Boogie Preprocessor took 177.84 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 165.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:31,348 INFO L168 Benchmark]: RCFGBuilder took 2152.24 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 165.7 MB in the beginning and 205.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:31,351 INFO L168 Benchmark]: TraceAbstraction took 4541.80 ms. Allocated memory was 250.6 MB in the beginning and 330.8 MB in the end (delta: 80.2 MB). Free memory was 205.1 MB in the beginning and 180.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 104.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:31,358 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.54 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 170.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.84 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 165.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2152.24 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 165.7 MB in the beginning and 205.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4541.80 ms. Allocated memory was 250.6 MB in the beginning and 330.8 MB in the end (delta: 80.2 MB). Free memory was 205.1 MB in the beginning and 180.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 104.5 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...