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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:17,952 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:58:17,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:17,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:17,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:17,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:18,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:18,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:18,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:18,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:18,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:18,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:18,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:18,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:18,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:58:18,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:18,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:18,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:18,042 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 00:58:18,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:18,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:18,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:18,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:18,066 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:18,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:18,067 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:18,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:18,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:18,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:18,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:18,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:18,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:18,070 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:18,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:18,070 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:18,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:18,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:18,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:18,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:18,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:18,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:18,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:18,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:18,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:18,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:18,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:18,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:18,073 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 00:58:18,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:18,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:18,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:18,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:18,423 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:18,423 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label49.c [2019-10-07 00:58:18,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd0249b7/ad2924e260f540cf871d4ce9dc5e2521/FLAG0b0bb0734 [2019-10-07 00:58:19,130 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:19,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label49.c [2019-10-07 00:58:19,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd0249b7/ad2924e260f540cf871d4ce9dc5e2521/FLAG0b0bb0734 [2019-10-07 00:58:19,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd0249b7/ad2924e260f540cf871d4ce9dc5e2521 [2019-10-07 00:58:19,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:19,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:19,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:19,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:19,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:19,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:19" (1/1) ... [2019-10-07 00:58:19,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7672446e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:19, skipping insertion in model container [2019-10-07 00:58:19,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:19" (1/1) ... [2019-10-07 00:58:19,427 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:19,483 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:58:19,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:19,976 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:58:20,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:20,121 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:58:20,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20 WrapperNode [2019-10-07 00:58:20,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:20,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:58:20,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:58:20,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:58:20,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (1/1) ... [2019-10-07 00:58:20,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:58:20,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:58:20,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:58:20,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:58:20,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (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 00:58:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:58:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:58:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:58:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:58:20,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:58:20,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:58:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:58:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:58:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:58:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:58:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:58:22,338 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:58:22,339 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:58:22,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:22 BoogieIcfgContainer [2019-10-07 00:58:22,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:58:22,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:58:22,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:58:22,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:58:22,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:19" (1/3) ... [2019-10-07 00:58:22,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eaf94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:22, skipping insertion in model container [2019-10-07 00:58:22,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:20" (2/3) ... [2019-10-07 00:58:22,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eaf94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:22, skipping insertion in model container [2019-10-07 00:58:22,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:22" (3/3) ... [2019-10-07 00:58:22,350 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label49.c [2019-10-07 00:58:22,360 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:58:22,369 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:58:22,381 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:58:22,409 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:58:22,409 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:58:22,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:58:22,410 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:58:22,410 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:58:22,410 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:58:22,410 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:58:22,411 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:58:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-07 00:58:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 00:58:22,442 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:22,443 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 00:58:22,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash -219359177, now seen corresponding path program 1 times [2019-10-07 00:58:22,460 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:22,460 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:22,460 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:22,460 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:22,871 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 00:58:22,872 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:22,873 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:22,873 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:22,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:22,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:22,899 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-07 00:58:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:23,542 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-07 00:58:23,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:23,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-07 00:58:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:23,568 INFO L225 Difference]: With dead ends: 273 [2019-10-07 00:58:23,568 INFO L226 Difference]: Without dead ends: 175 [2019-10-07 00:58:23,576 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 00:58:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-07 00:58:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-07 00:58:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-07 00:58:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-07 00:58:23,689 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-07 00:58:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:23,691 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-07 00:58:23,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-07 00:58:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 00:58:23,696 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:23,696 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:23,697 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -701893956, now seen corresponding path program 1 times [2019-10-07 00:58:23,697 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:23,698 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:23,698 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:23,698 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:23,871 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:23,872 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:23,872 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:23,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:23,875 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-07 00:58:24,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:24,258 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-10-07 00:58:24,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:24,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-07 00:58:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:24,264 INFO L225 Difference]: With dead ends: 513 [2019-10-07 00:58:24,264 INFO L226 Difference]: Without dead ends: 343 [2019-10-07 00:58:24,266 INFO L606 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 [2019-10-07 00:58:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-07 00:58:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2019-10-07 00:58:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-07 00:58:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 575 transitions. [2019-10-07 00:58:24,292 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 575 transitions. Word has length 94 [2019-10-07 00:58:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:24,293 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 575 transitions. [2019-10-07 00:58:24,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 575 transitions. [2019-10-07 00:58:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 00:58:24,297 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:24,298 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:24,298 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1307297633, now seen corresponding path program 1 times [2019-10-07 00:58:24,299 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:24,299 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:24,299 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:24,299 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:24,440 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:24,442 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:24,443 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:58:24,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:58:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:58:24,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:58:24,444 INFO L87 Difference]: Start difference. First operand 343 states and 575 transitions. Second operand 6 states. [2019-10-07 00:58:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:25,172 INFO L93 Difference]: Finished difference Result 1059 states and 1887 transitions. [2019-10-07 00:58:25,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:58:25,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-10-07 00:58:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:25,181 INFO L225 Difference]: With dead ends: 1059 [2019-10-07 00:58:25,181 INFO L226 Difference]: Without dead ends: 721 [2019-10-07 00:58:25,185 INFO L606 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 [2019-10-07 00:58:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-10-07 00:58:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 703. [2019-10-07 00:58:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-10-07 00:58:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1169 transitions. [2019-10-07 00:58:25,260 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1169 transitions. Word has length 108 [2019-10-07 00:58:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:25,260 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 1169 transitions. [2019-10-07 00:58:25,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:58:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1169 transitions. [2019-10-07 00:58:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 00:58:25,267 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:25,267 INFO L385 BasicCegarLoop]: trace histogram [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, 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] [2019-10-07 00:58:25,268 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash -89304076, now seen corresponding path program 1 times [2019-10-07 00:58:25,268 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:25,269 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:25,269 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:25,269 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:25,501 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:25,501 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:25,501 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 00:58:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:25,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:58:25,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:25,719 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:25,818 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:58:25,868 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-07 00:58:25,869 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:58:25,875 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:58:25,884 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:58:25,885 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:58:26,185 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-07 00:58:26,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:26,694 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 00:58:26,702 INFO L168 Benchmark]: Toolchain (without parser) took 7288.90 ms. Allocated memory was 140.5 MB in the beginning and 324.0 MB in the end (delta: 183.5 MB). Free memory was 103.9 MB in the beginning and 225.4 MB in the end (delta: -121.5 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,703 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.91 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 166.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,705 INFO L168 Benchmark]: Boogie Preprocessor took 166.38 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 160.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,706 INFO L168 Benchmark]: RCFGBuilder took 2050.34 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 160.9 MB in the beginning and 181.3 MB in the end (delta: -20.3 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,707 INFO L168 Benchmark]: TraceAbstraction took 4356.74 ms. Allocated memory was 245.4 MB in the beginning and 324.0 MB in the end (delta: 78.6 MB). Free memory was 181.3 MB in the beginning and 225.4 MB in the end (delta: -44.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:26,711 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.91 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 166.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.38 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 160.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2050.34 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 160.9 MB in the beginning and 181.3 MB in the end (delta: -20.3 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4356.74 ms. Allocated memory was 245.4 MB in the beginning and 324.0 MB in the end (delta: 78.6 MB). Free memory was 181.3 MB in the beginning and 225.4 MB in the end (delta: -44.1 MB). Peak memory consumption was 34.5 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...