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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:37,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:58:37,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:58:37,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:58:37,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:37,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:37,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:37,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:37,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:37,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:37,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:37,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:37,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:37,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:37,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:37,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:37,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:58:37,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:37,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:37,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:37,786 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 00:58:37,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:37,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:37,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:37,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:37,804 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:37,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:37,805 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:37,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:37,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:37,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:37,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:37,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:37,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:37,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:37,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:37,807 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:37,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:37,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:37,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:37,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:37,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:37,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:37,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:37,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:37,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:37,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:37,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:37,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:37,809 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 00:58:38,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:38,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:38,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:38,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:38,137 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:38,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-07 00:58:38,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a71ea66/4545470ef42c43489e7e30fe85f5f8a6/FLAGb74dc6138 [2019-10-07 00:58:38,887 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:38,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-07 00:58:38,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a71ea66/4545470ef42c43489e7e30fe85f5f8a6/FLAGb74dc6138 [2019-10-07 00:58:39,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a71ea66/4545470ef42c43489e7e30fe85f5f8a6 [2019-10-07 00:58:39,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:39,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:39,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:39,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:39,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:39,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:39" (1/1) ... [2019-10-07 00:58:39,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3675282d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:39, skipping insertion in model container [2019-10-07 00:58:39,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:39" (1/1) ... [2019-10-07 00:58:39,131 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:39,216 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:58:39,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:39,995 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:58:40,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:40,459 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:58:40,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40 WrapperNode [2019-10-07 00:58:40,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:40,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:58:40,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:58:40,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:58:40,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... [2019-10-07 00:58:40,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:58:40,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:58:40,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:58:40,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:58:40,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:58:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:58:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:58:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:58:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:58:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:58:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:58:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:58:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:58:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:58:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:58:44,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:58:44,055 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:58:44,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:44 BoogieIcfgContainer [2019-10-07 00:58:44,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:58:44,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:58:44,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:58:44,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:58:44,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:39" (1/3) ... [2019-10-07 00:58:44,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7896b406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:44, skipping insertion in model container [2019-10-07 00:58:44,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:40" (2/3) ... [2019-10-07 00:58:44,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7896b406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:44, skipping insertion in model container [2019-10-07 00:58:44,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:44" (3/3) ... [2019-10-07 00:58:44,076 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-10-07 00:58:44,090 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:58:44,102 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:58:44,114 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:58:44,155 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:58:44,155 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:58:44,156 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:58:44,156 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:58:44,157 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:58:44,157 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:58:44,157 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:58:44,158 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:58:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-07 00:58:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 00:58:44,226 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:44,228 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 00:58:44,230 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash 136475942, now seen corresponding path program 1 times [2019-10-07 00:58:44,252 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:44,252 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:44,253 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:44,253 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:45,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:45,170 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:45,170 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:45,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:45,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:45,193 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-07 00:58:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:46,402 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-07 00:58:46,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:46,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-07 00:58:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:46,434 INFO L225 Difference]: With dead ends: 462 [2019-10-07 00:58:46,434 INFO L226 Difference]: Without dead ends: 301 [2019-10-07 00:58:46,441 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-07 00:58:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-07 00:58:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-07 00:58:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 535 transitions. [2019-10-07 00:58:46,552 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 535 transitions. Word has length 149 [2019-10-07 00:58:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:46,553 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 535 transitions. [2019-10-07 00:58:46,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 535 transitions. [2019-10-07 00:58:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 00:58:46,558 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:46,559 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:46,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:46,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:46,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1532425966, now seen corresponding path program 1 times [2019-10-07 00:58:46,560 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:46,560 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:46,560 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:46,560 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:46,888 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:46,889 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:46,889 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:46,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:46,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:46,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:46,893 INFO L87 Difference]: Start difference. First operand 301 states and 535 transitions. Second operand 3 states. [2019-10-07 00:58:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:47,951 INFO L93 Difference]: Finished difference Result 891 states and 1606 transitions. [2019-10-07 00:58:47,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:47,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-07 00:58:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:47,964 INFO L225 Difference]: With dead ends: 891 [2019-10-07 00:58:47,964 INFO L226 Difference]: Without dead ends: 595 [2019-10-07 00:58:47,967 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-07 00:58:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-07 00:58:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-07 00:58:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 970 transitions. [2019-10-07 00:58:47,996 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 970 transitions. Word has length 161 [2019-10-07 00:58:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:47,997 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 970 transitions. [2019-10-07 00:58:47,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 970 transitions. [2019-10-07 00:58:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-07 00:58:48,003 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:48,004 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:48,004 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:48,005 INFO L82 PathProgramCache]: Analyzing trace with hash -478372114, now seen corresponding path program 1 times [2019-10-07 00:58:48,005 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:48,005 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:48,005 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:48,005 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:48,196 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:48,196 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:48,196 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:48,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:48,198 INFO L87 Difference]: Start difference. First operand 595 states and 970 transitions. Second operand 3 states. [2019-10-07 00:58:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:49,248 INFO L93 Difference]: Finished difference Result 1773 states and 2941 transitions. [2019-10-07 00:58:49,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:49,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-07 00:58:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:49,257 INFO L225 Difference]: With dead ends: 1773 [2019-10-07 00:58:49,258 INFO L226 Difference]: Without dead ends: 1183 [2019-10-07 00:58:49,262 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-07 00:58:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-07 00:58:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-07 00:58:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1913 transitions. [2019-10-07 00:58:49,310 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1913 transitions. Word has length 163 [2019-10-07 00:58:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:49,311 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1913 transitions. [2019-10-07 00:58:49,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1913 transitions. [2019-10-07 00:58:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 00:58:49,317 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:49,318 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:49,318 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1566269997, now seen corresponding path program 1 times [2019-10-07 00:58:49,319 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:49,319 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:49,319 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:49,319 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:49,449 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:49,449 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:49,450 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:58:49,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:58:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:58:49,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:58:49,451 INFO L87 Difference]: Start difference. First operand 1183 states and 1913 transitions. Second operand 6 states. [2019-10-07 00:58:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:51,097 INFO L93 Difference]: Finished difference Result 3663 states and 6645 transitions. [2019-10-07 00:58:51,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 00:58:51,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-07 00:58:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:51,127 INFO L225 Difference]: With dead ends: 3663 [2019-10-07 00:58:51,128 INFO L226 Difference]: Without dead ends: 2485 [2019-10-07 00:58:51,133 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:58:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2019-10-07 00:58:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2403. [2019-10-07 00:58:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2019-10-07 00:58:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3970 transitions. [2019-10-07 00:58:51,253 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3970 transitions. Word has length 166 [2019-10-07 00:58:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:51,253 INFO L462 AbstractCegarLoop]: Abstraction has 2403 states and 3970 transitions. [2019-10-07 00:58:51,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:58:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3970 transitions. [2019-10-07 00:58:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-07 00:58:51,264 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:51,264 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:51,265 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1349583205, now seen corresponding path program 1 times [2019-10-07 00:58:51,266 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:51,266 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:51,266 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:51,266 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:51,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:51,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:51,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:58:51,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:51,868 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:51,985 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:58:52,040 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-07 00:58:52,040 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:58:52,048 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:58:52,057 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:58:52,058 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:58:52,903 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-07 00:58:53,124 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-07 00:58:53,396 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-07 00:58:53,723 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-07 00:58:53,894 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2019-10-07 00:58:54,067 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-07 00:58:54,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:54,719 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 00:58:54,725 INFO L168 Benchmark]: Toolchain (without parser) took 15612.16 ms. Allocated memory was 145.2 MB in the beginning and 492.8 MB in the end (delta: 347.6 MB). Free memory was 98.5 MB in the beginning and 190.3 MB in the end (delta: -91.7 MB). Peak memory consumption was 255.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,726 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1346.18 ms. Allocated memory was 145.2 MB in the beginning and 205.5 MB in the end (delta: 60.3 MB). Free memory was 98.3 MB in the beginning and 122.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,728 INFO L168 Benchmark]: Boogie Preprocessor took 200.80 ms. Allocated memory is still 205.5 MB. Free memory was 122.9 MB in the beginning and 111.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,729 INFO L168 Benchmark]: RCFGBuilder took 3395.19 ms. Allocated memory was 205.5 MB in the beginning and 307.8 MB in the end (delta: 102.2 MB). Free memory was 111.3 MB in the beginning and 242.8 MB in the end (delta: -131.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,730 INFO L168 Benchmark]: TraceAbstraction took 10663.75 ms. Allocated memory was 307.8 MB in the beginning and 492.8 MB in the end (delta: 185.1 MB). Free memory was 239.7 MB in the beginning and 190.3 MB in the end (delta: 49.4 MB). Peak memory consumption was 234.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:54,734 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1346.18 ms. Allocated memory was 145.2 MB in the beginning and 205.5 MB in the end (delta: 60.3 MB). Free memory was 98.3 MB in the beginning and 122.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.80 ms. Allocated memory is still 205.5 MB. Free memory was 122.9 MB in the beginning and 111.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3395.19 ms. Allocated memory was 205.5 MB in the beginning and 307.8 MB in the end (delta: 102.2 MB). Free memory was 111.3 MB in the beginning and 242.8 MB in the end (delta: -131.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10663.75 ms. Allocated memory was 307.8 MB in the beginning and 492.8 MB in the end (delta: 185.1 MB). Free memory was 239.7 MB in the beginning and 190.3 MB in the end (delta: 49.4 MB). Peak memory consumption was 234.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: 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...