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/Problem03_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:57,958 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:58:57,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:57,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:57,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:57,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:57,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:57,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:57,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:57,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:57,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:57,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:57,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:58,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:58,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:58:58,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:58,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:58,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:58,012 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 00:58:58,034 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:58,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:58,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:58,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:58,036 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:58,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:58,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:58,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:58,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:58,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:58,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:58,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:58,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:58,039 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:58,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:58,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:58,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:58,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:58,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:58,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:58,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:58,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:58,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:58,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:58,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:58,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:58,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:58,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:58,043 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 00:58:58,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:58,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:58,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:58,368 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:58,369 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:58,369 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-07 00:58:58,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dad6dc4/54fd338c7ee6403aac655f5ad6bef5b5/FLAG290faf3c6 [2019-10-07 00:58:59,141 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:59,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-07 00:58:59,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dad6dc4/54fd338c7ee6403aac655f5ad6bef5b5/FLAG290faf3c6 [2019-10-07 00:58:59,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dad6dc4/54fd338c7ee6403aac655f5ad6bef5b5 [2019-10-07 00:58:59,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:59,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:59,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:59,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:59,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:59,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:59" (1/1) ... [2019-10-07 00:58:59,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4020d0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:59, skipping insertion in model container [2019-10-07 00:58:59,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:59" (1/1) ... [2019-10-07 00:58:59,392 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:59,472 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:59:00,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:00,341 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:59:00,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:00,725 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:59:00,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00 WrapperNode [2019-10-07 00:59:00,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:00,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:59:00,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:59:00,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:59:00,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (1/1) ... [2019-10-07 00:59:00,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:59:00,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:59:00,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:59:00,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:59:00,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (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 00:59:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:59:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:59:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:59:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:59:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:59:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:59:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:59:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:59:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:59:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:59:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:59:04,025 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:59:04,026 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:59:04,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:59:04 BoogieIcfgContainer [2019-10-07 00:59:04,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:59:04,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:59:04,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:59:04,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:59:04,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:59" (1/3) ... [2019-10-07 00:59:04,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a49c4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:59:04, skipping insertion in model container [2019-10-07 00:59:04,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:00" (2/3) ... [2019-10-07 00:59:04,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a49c4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:59:04, skipping insertion in model container [2019-10-07 00:59:04,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:59:04" (3/3) ... [2019-10-07 00:59:04,041 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2019-10-07 00:59:04,050 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:59:04,059 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:59:04,070 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:59:04,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:59:04,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:59:04,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:59:04,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:59:04,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:59:04,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:59:04,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:59:04,099 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:59:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-07 00:59:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 00:59:04,136 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:04,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:04,139 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:04,145 INFO L82 PathProgramCache]: Analyzing trace with hash 268797895, now seen corresponding path program 1 times [2019-10-07 00:59:04,154 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:04,155 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:04,155 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:04,155 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:04,879 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 00:59:04,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:04,880 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:04,881 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:59:04,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:59:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:59:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:59:04,903 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-07 00:59:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:06,812 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions. [2019-10-07 00:59:06,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:59:06,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-07 00:59:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:06,837 INFO L225 Difference]: With dead ends: 613 [2019-10-07 00:59:06,837 INFO L226 Difference]: Without dead ends: 448 [2019-10-07 00:59:06,842 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 00:59:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-07 00:59:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2019-10-07 00:59:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-07 00:59:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 579 transitions. [2019-10-07 00:59:06,913 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 579 transitions. Word has length 149 [2019-10-07 00:59:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:06,915 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 579 transitions. [2019-10-07 00:59:06,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:59:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 579 transitions. [2019-10-07 00:59:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-07 00:59:06,921 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:06,921 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:06,922 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash 235077976, now seen corresponding path program 1 times [2019-10-07 00:59:06,922 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:06,923 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:06,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:06,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:07,146 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:07,147 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:07,147 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:59:07,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:59:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:59:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:59:07,153 INFO L87 Difference]: Start difference. First operand 301 states and 579 transitions. Second operand 6 states. [2019-10-07 00:59:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:08,460 INFO L93 Difference]: Finished difference Result 913 states and 1785 transitions. [2019-10-07 00:59:08,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:59:08,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2019-10-07 00:59:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:08,469 INFO L225 Difference]: With dead ends: 913 [2019-10-07 00:59:08,470 INFO L226 Difference]: Without dead ends: 617 [2019-10-07 00:59:08,473 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 00:59:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-07 00:59:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 605. [2019-10-07 00:59:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-07 00:59:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1011 transitions. [2019-10-07 00:59:08,529 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1011 transitions. Word has length 176 [2019-10-07 00:59:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:08,530 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 1011 transitions. [2019-10-07 00:59:08,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:59:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1011 transitions. [2019-10-07 00:59:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-07 00:59:08,535 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:08,535 INFO L385 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:08,536 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash 422932365, now seen corresponding path program 1 times [2019-10-07 00:59:08,536 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:08,537 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:08,537 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:08,537 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:08,876 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:08,878 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:59:08,878 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:59:08,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:59:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:59:08,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:59:08,883 INFO L87 Difference]: Start difference. First operand 605 states and 1011 transitions. Second operand 4 states. [2019-10-07 00:59:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:59:10,724 INFO L93 Difference]: Finished difference Result 2391 states and 4138 transitions. [2019-10-07 00:59:10,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:59:10,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2019-10-07 00:59:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:59:10,738 INFO L225 Difference]: With dead ends: 2391 [2019-10-07 00:59:10,738 INFO L226 Difference]: Without dead ends: 1791 [2019-10-07 00:59:10,741 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:59:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2019-10-07 00:59:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1791. [2019-10-07 00:59:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-10-07 00:59:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2932 transitions. [2019-10-07 00:59:10,812 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2932 transitions. Word has length 194 [2019-10-07 00:59:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:59:10,813 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2932 transitions. [2019-10-07 00:59:10,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:59:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2932 transitions. [2019-10-07 00:59:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-07 00:59:10,822 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:59:10,822 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:10,823 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:59:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:59:10,823 INFO L82 PathProgramCache]: Analyzing trace with hash 41475582, now seen corresponding path program 1 times [2019-10-07 00:59:10,823 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:59:10,824 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:10,824 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:10,824 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:59:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:59:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:11,007 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:59:11,007 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:59:11,007 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 00:59:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:59:11,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 00:59:11,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:59:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:11,397 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:59:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:59:11,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:59:11,592 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-07 00:59:11,592 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:59:11,599 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:59:11,608 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:59:11,609 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:59:12,583 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-07 00:59:12,835 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-07 00:59:13,090 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-07 00:59:13,455 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-07 00:59:14,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:59:14,461 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: ε 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: ε 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.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 00:59:14,467 INFO L168 Benchmark]: Toolchain (without parser) took 15091.26 ms. Allocated memory was 144.7 MB in the beginning and 518.0 MB in the end (delta: 373.3 MB). Free memory was 95.8 MB in the beginning and 168.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 301.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,468 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1350.42 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 95.6 MB in the beginning and 122.2 MB in the end (delta: -26.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,470 INFO L168 Benchmark]: Boogie Preprocessor took 176.75 ms. Allocated memory is still 203.4 MB. Free memory was 122.2 MB in the beginning and 110.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,471 INFO L168 Benchmark]: RCFGBuilder took 3125.90 ms. Allocated memory was 203.4 MB in the beginning and 318.2 MB in the end (delta: 114.8 MB). Free memory was 110.9 MB in the beginning and 265.4 MB in the end (delta: -154.5 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,472 INFO L168 Benchmark]: TraceAbstraction took 10432.87 ms. Allocated memory was 318.2 MB in the beginning and 518.0 MB in the end (delta: 199.8 MB). Free memory was 265.4 MB in the beginning and 168.1 MB in the end (delta: 97.3 MB). Peak memory consumption was 297.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:59:14,482 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 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1350.42 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 95.6 MB in the beginning and 122.2 MB in the end (delta: -26.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.75 ms. Allocated memory is still 203.4 MB. Free memory was 122.2 MB in the beginning and 110.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3125.90 ms. Allocated memory was 203.4 MB in the beginning and 318.2 MB in the end (delta: 114.8 MB). Free memory was 110.9 MB in the beginning and 265.4 MB in the end (delta: -154.5 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10432.87 ms. Allocated memory was 318.2 MB in the beginning and 518.0 MB in the end (delta: 199.8 MB). Free memory was 265.4 MB in the beginning and 168.1 MB in the end (delta: 97.3 MB). Peak memory consumption was 297.1 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: 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...