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/Problem15_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:25,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:25,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:25,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:30:25,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:25,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:25,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:25,867 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 03:30:25,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:25,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:25,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:25,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:25,887 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:25,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:25,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:25,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:25,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:25,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:25,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:25,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:25,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:25,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:25,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:25,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:25,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:25,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:25,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:25,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:25,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:25,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:25,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:25,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:25,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:25,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:25,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:25,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:25,892 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 03:30:26,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:26,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:26,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:26,191 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:26,192 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:26,192 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2019-10-07 03:30:26,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81618ae62/d87147b6197c48f980e3821873e7f2fd/FLAG1d9469b16 [2019-10-07 03:30:26,902 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:26,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2019-10-07 03:30:26,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81618ae62/d87147b6197c48f980e3821873e7f2fd/FLAG1d9469b16 [2019-10-07 03:30:27,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81618ae62/d87147b6197c48f980e3821873e7f2fd [2019-10-07 03:30:27,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:27,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:27,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:27,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:27,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:27,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:27" (1/1) ... [2019-10-07 03:30:27,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:27, skipping insertion in model container [2019-10-07 03:30:27,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:27" (1/1) ... [2019-10-07 03:30:27,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:27,198 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:28,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:28,097 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:28,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:28,393 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:28,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28 WrapperNode [2019-10-07 03:30:28,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:28,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:28,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:28,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:28,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:28,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:28,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:28,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:28,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (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 03:30:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:30:42,495 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:30:42,495 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:30:42,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:42 BoogieIcfgContainer [2019-10-07 03:30:42,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:30:42,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:30:42,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:30:42,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:30:42,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:27" (1/3) ... [2019-10-07 03:30:42,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b839307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:42, skipping insertion in model container [2019-10-07 03:30:42,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (2/3) ... [2019-10-07 03:30:42,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b839307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:42, skipping insertion in model container [2019-10-07 03:30:42,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:42" (3/3) ... [2019-10-07 03:30:42,505 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label43.c [2019-10-07 03:30:42,513 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:30:42,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:30:42,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:30:42,561 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:30:42,561 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:30:42,562 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:30:42,562 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:30:42,562 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:30:42,562 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:30:42,562 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:30:42,562 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:30:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:30:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:30:42,593 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:42,594 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:42,595 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash 648054125, now seen corresponding path program 1 times [2019-10-07 03:30:42,610 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:42,610 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:42,611 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:42,611 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:42,828 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 03:30:42,828 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:42,829 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:42,829 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:42,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:42,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:42,851 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:30:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:48,806 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:30:48,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:48,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:30:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:48,846 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:30:48,847 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:30:48,860 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 03:30:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:30:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 430. [2019-10-07 03:30:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2019-10-07 03:30:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 821 transitions. [2019-10-07 03:30:48,995 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 821 transitions. Word has length 11 [2019-10-07 03:30:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:48,996 INFO L462 AbstractCegarLoop]: Abstraction has 430 states and 821 transitions. [2019-10-07 03:30:48,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 821 transitions. [2019-10-07 03:30:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 03:30:48,999 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:49,000 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:49,000 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash -907748291, now seen corresponding path program 1 times [2019-10-07 03:30:49,002 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:49,002 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:49,003 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:49,003 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:49,157 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 03:30:49,157 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:49,157 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:49,158 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:49,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:49,160 INFO L87 Difference]: Start difference. First operand 430 states and 821 transitions. Second operand 4 states. [2019-10-07 03:30:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:51,992 INFO L93 Difference]: Finished difference Result 1699 states and 3298 transitions. [2019-10-07 03:30:51,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:51,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-07 03:30:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:52,001 INFO L225 Difference]: With dead ends: 1699 [2019-10-07 03:30:52,002 INFO L226 Difference]: Without dead ends: 1274 [2019-10-07 03:30:52,004 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 03:30:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2019-10-07 03:30:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1243. [2019-10-07 03:30:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2019-10-07 03:30:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2082 transitions. [2019-10-07 03:30:52,052 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2082 transitions. Word has length 21 [2019-10-07 03:30:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:52,053 INFO L462 AbstractCegarLoop]: Abstraction has 1243 states and 2082 transitions. [2019-10-07 03:30:52,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2082 transitions. [2019-10-07 03:30:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-07 03:30:52,057 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:52,057 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 03:30:52,058 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:52,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2004287180, now seen corresponding path program 1 times [2019-10-07 03:30:52,058 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:52,058 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:52,058 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:52,059 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:30:52,179 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:52,180 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:52,180 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 03:30:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:52,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:30:52,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:30:52,342 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:30:52,418 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:30:52,419 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2019-10-07 03:30:52,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:52,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:30:52,420 INFO L87 Difference]: Start difference. First operand 1243 states and 2082 transitions. Second operand 5 states. [2019-10-07 03:30:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:56,879 INFO L93 Difference]: Finished difference Result 3377 states and 5740 transitions. [2019-10-07 03:30:56,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:30:56,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-07 03:30:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:56,903 INFO L225 Difference]: With dead ends: 3377 [2019-10-07 03:30:56,903 INFO L226 Difference]: Without dead ends: 2139 [2019-10-07 03:30:56,907 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:30:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2019-10-07 03:30:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2104. [2019-10-07 03:30:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2019-10-07 03:30:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3355 transitions. [2019-10-07 03:30:56,981 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3355 transitions. Word has length 62 [2019-10-07 03:30:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:56,981 INFO L462 AbstractCegarLoop]: Abstraction has 2104 states and 3355 transitions. [2019-10-07 03:30:56,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3355 transitions. [2019-10-07 03:30:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-07 03:30:56,986 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:56,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:57,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:57,193 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:57,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1114103996, now seen corresponding path program 1 times [2019-10-07 03:30:57,194 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:57,195 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:57,195 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:57,195 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:30:57,416 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:57,416 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:57,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:30:57,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:30:57,553 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:30:57,628 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:30:57,629 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:30:57,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:57,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:57,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:30:57,631 INFO L87 Difference]: Start difference. First operand 2104 states and 3355 transitions. Second operand 5 states. [2019-10-07 03:31:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:00,687 INFO L93 Difference]: Finished difference Result 6206 states and 10355 transitions. [2019-10-07 03:31:00,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:31:00,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-10-07 03:31:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:00,713 INFO L225 Difference]: With dead ends: 6206 [2019-10-07 03:31:00,713 INFO L226 Difference]: Without dead ends: 4107 [2019-10-07 03:31:00,719 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:31:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2019-10-07 03:31:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2747. [2019-10-07 03:31:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2019-10-07 03:31:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4221 transitions. [2019-10-07 03:31:00,839 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4221 transitions. Word has length 66 [2019-10-07 03:31:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:00,840 INFO L462 AbstractCegarLoop]: Abstraction has 2747 states and 4221 transitions. [2019-10-07 03:31:00,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:31:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4221 transitions. [2019-10-07 03:31:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-07 03:31:00,847 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:00,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:31:01,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:01,052 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1349289601, now seen corresponding path program 1 times [2019-10-07 03:31:01,054 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:01,054 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:01,054 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:01,055 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:01,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:01,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:01,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:31:01,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:01,421 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:01,497 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:31:01,530 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-07 03:31:01,530 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:31:01,537 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:31:01,545 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:31:01,546 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:31:01,784 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 58 for LOIs [2019-10-07 03:31:02,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 03:31:02,831 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8927 conjuctions. This might take some time... [2019-10-07 03:31:02,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 03:31:03,767 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8927 conjuctions. This might take some time... [2019-10-07 03:31:03,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 03:31:03,853 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 03:31:04,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:04,146 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 03:31:04,154 INFO L168 Benchmark]: Toolchain (without parser) took 37052.12 ms. Allocated memory was 137.9 MB in the beginning and 597.2 MB in the end (delta: 459.3 MB). Free memory was 96.9 MB in the beginning and 281.6 MB in the end (delta: -184.7 MB). Peak memory consumption was 274.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,155 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1292.29 ms. Allocated memory was 137.9 MB in the beginning and 207.1 MB in the end (delta: 69.2 MB). Free memory was 96.7 MB in the beginning and 115.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,157 INFO L168 Benchmark]: Boogie Preprocessor took 191.09 ms. Allocated memory is still 207.1 MB. Free memory was 115.3 MB in the beginning and 103.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,158 INFO L168 Benchmark]: RCFGBuilder took 13910.67 ms. Allocated memory was 207.1 MB in the beginning and 309.9 MB in the end (delta: 102.8 MB). Free memory was 103.4 MB in the beginning and 253.0 MB in the end (delta: -149.7 MB). Peak memory consumption was 132.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,159 INFO L168 Benchmark]: TraceAbstraction took 21653.42 ms. Allocated memory was 309.9 MB in the beginning and 597.2 MB in the end (delta: 287.3 MB). Free memory was 253.0 MB in the beginning and 281.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 258.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:04,164 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1292.29 ms. Allocated memory was 137.9 MB in the beginning and 207.1 MB in the end (delta: 69.2 MB). Free memory was 96.7 MB in the beginning and 115.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.09 ms. Allocated memory is still 207.1 MB. Free memory was 115.3 MB in the beginning and 103.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13910.67 ms. Allocated memory was 207.1 MB in the beginning and 309.9 MB in the end (delta: 102.8 MB). Free memory was 103.4 MB in the beginning and 253.0 MB in the end (delta: -149.7 MB). Peak memory consumption was 132.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21653.42 ms. Allocated memory was 309.9 MB in the beginning and 597.2 MB in the end (delta: 287.3 MB). Free memory was 253.0 MB in the beginning and 281.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 258.7 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...