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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:40:18,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:40:18,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:40:18,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:40:18,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:40:18,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:40:18,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:40:18,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:40:18,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:40:18,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:40:18,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:40:18,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:40:18,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:40:18,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:40:18,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:40:18,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:40:18,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:40:18,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:40:18,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:40:18,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:40:18,766 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 [2019-10-15 01:40:18,788 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:40:18,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:40:18,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:40:18,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:40:18,791 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:40:18,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:40:18,791 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:40:18,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:40:18,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:40:18,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:40:18,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:40:18,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:40:18,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:40:18,794 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:40:18,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:40:18,794 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:40:18,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:40:18,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:40:18,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:40:18,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:40:18,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:40:18,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:18,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:40:18,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:40:18,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:40:18,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:40:18,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:40:18,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:40:18,797 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 [2019-10-15 01:40:19,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:40:19,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:40:19,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:40:19,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:40:19,097 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:40:19,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-15 01:40:19,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d21d8a1/fb92eb0ddc2e4bf78b943f71f0fe0669/FLAG5a97fee45 [2019-10-15 01:40:19,727 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:40:19,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-15 01:40:19,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d21d8a1/fb92eb0ddc2e4bf78b943f71f0fe0669/FLAG5a97fee45 [2019-10-15 01:40:19,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d21d8a1/fb92eb0ddc2e4bf78b943f71f0fe0669 [2019-10-15 01:40:20,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:40:20,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:40:20,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:20,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:40:20,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:40:20,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5a7a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20, skipping insertion in model container [2019-10-15 01:40:20,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:40:20,097 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:40:20,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:20,708 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:40:20,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:20,871 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:40:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20 WrapperNode [2019-10-15 01:40:20,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:20,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:40:20,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:40:20,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:40:20,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... [2019-10-15 01:40:20,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:40:20,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:40:20,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:40:20,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:40:20,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:40:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:40:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:40:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:40:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:40:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:40:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:40:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:40:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:40:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:40:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:40:22,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:40:22,945 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:40:22,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:22 BoogieIcfgContainer [2019-10-15 01:40:22,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:40:22,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:40:22,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:40:22,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:40:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:40:20" (1/3) ... [2019-10-15 01:40:22,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218072af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:22, skipping insertion in model container [2019-10-15 01:40:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:20" (2/3) ... [2019-10-15 01:40:22,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218072af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:22, skipping insertion in model container [2019-10-15 01:40:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:22" (3/3) ... [2019-10-15 01:40:22,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2019-10-15 01:40:22,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:40:22,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:40:22,986 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:40:23,020 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:40:23,021 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:40:23,021 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:40:23,021 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:40:23,021 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:40:23,022 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:40:23,022 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:40:23,022 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:40:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:40:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:40:23,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:23,054 INFO L380 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] [2019-10-15 01:40:23,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash 826810913, now seen corresponding path program 1 times [2019-10-15 01:40:23,069 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:23,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762369707] [2019-10-15 01:40:23,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:23,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:23,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:23,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762369707] [2019-10-15 01:40:23,551 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:23,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:23,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419314024] [2019-10-15 01:40:23,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:23,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:23,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:23,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:23,579 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:40:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:24,157 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:40:24,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:24,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:40:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:24,173 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:40:24,173 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:40:24,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:40:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:40:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:40:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 273 transitions. [2019-10-15 01:40:24,241 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 273 transitions. Word has length 77 [2019-10-15 01:40:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:24,242 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 273 transitions. [2019-10-15 01:40:24,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 273 transitions. [2019-10-15 01:40:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:40:24,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:24,247 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:24,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:24,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:24,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1195675720, now seen corresponding path program 1 times [2019-10-15 01:40:24,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:24,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870443116] [2019-10-15 01:40:24,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:24,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:24,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:24,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870443116] [2019-10-15 01:40:24,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:24,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:40:24,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245740358] [2019-10-15 01:40:24,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:40:24,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:24,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:40:24,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:40:24,403 INFO L87 Difference]: Start difference. First operand 157 states and 273 transitions. Second operand 6 states. [2019-10-15 01:40:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:25,028 INFO L93 Difference]: Finished difference Result 479 states and 861 transitions. [2019-10-15 01:40:25,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:40:25,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-15 01:40:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:25,035 INFO L225 Difference]: With dead ends: 479 [2019-10-15 01:40:25,036 INFO L226 Difference]: Without dead ends: 327 [2019-10-15 01:40:25,038 INFO L600 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 [2019-10-15 01:40:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-15 01:40:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-10-15 01:40:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-15 01:40:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 544 transitions. [2019-10-15 01:40:25,076 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 544 transitions. Word has length 87 [2019-10-15 01:40:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:25,076 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 544 transitions. [2019-10-15 01:40:25,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:40:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 544 transitions. [2019-10-15 01:40:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:40:25,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:25,080 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:40:25,080 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2128697324, now seen corresponding path program 1 times [2019-10-15 01:40:25,081 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:25,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897696895] [2019-10-15 01:40:25,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:25,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:25,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:25,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897696895] [2019-10-15 01:40:25,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:25,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:25,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383161890] [2019-10-15 01:40:25,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:25,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:25,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:25,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:25,170 INFO L87 Difference]: Start difference. First operand 315 states and 544 transitions. Second operand 3 states. [2019-10-15 01:40:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:25,531 INFO L93 Difference]: Finished difference Result 852 states and 1516 transitions. [2019-10-15 01:40:25,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:25,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 01:40:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:25,537 INFO L225 Difference]: With dead ends: 852 [2019-10-15 01:40:25,538 INFO L226 Difference]: Without dead ends: 542 [2019-10-15 01:40:25,541 INFO L600 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 [2019-10-15 01:40:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-15 01:40:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2019-10-15 01:40:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-15 01:40:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 850 transitions. [2019-10-15 01:40:25,579 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 850 transitions. Word has length 88 [2019-10-15 01:40:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:25,580 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 850 transitions. [2019-10-15 01:40:25,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 850 transitions. [2019-10-15 01:40:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 01:40:25,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:25,585 INFO L380 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] [2019-10-15 01:40:25,586 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash -847302476, now seen corresponding path program 1 times [2019-10-15 01:40:25,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:25,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126162852] [2019-10-15 01:40:25,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:25,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:25,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:25,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126162852] [2019-10-15 01:40:25,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:25,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:25,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142562016] [2019-10-15 01:40:25,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:25,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:25,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:25,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:25,692 INFO L87 Difference]: Start difference. First operand 542 states and 850 transitions. Second operand 3 states. [2019-10-15 01:40:26,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:26,050 INFO L93 Difference]: Finished difference Result 1381 states and 2245 transitions. [2019-10-15 01:40:26,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:26,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-10-15 01:40:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:26,060 INFO L225 Difference]: With dead ends: 1381 [2019-10-15 01:40:26,060 INFO L226 Difference]: Without dead ends: 844 [2019-10-15 01:40:26,065 INFO L600 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 [2019-10-15 01:40:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2019-10-15 01:40:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2019-10-15 01:40:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2019-10-15 01:40:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1310 transitions. [2019-10-15 01:40:26,114 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1310 transitions. Word has length 89 [2019-10-15 01:40:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:26,115 INFO L462 AbstractCegarLoop]: Abstraction has 844 states and 1310 transitions. [2019-10-15 01:40:26,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1310 transitions. [2019-10-15 01:40:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 01:40:26,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:26,120 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:40:26,120 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -848490688, now seen corresponding path program 1 times [2019-10-15 01:40:26,121 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:26,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856015845] [2019-10-15 01:40:26,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:26,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:26,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:26,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856015845] [2019-10-15 01:40:26,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:26,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:40:26,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487142635] [2019-10-15 01:40:26,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:40:26,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:40:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:40:26,403 INFO L87 Difference]: Start difference. First operand 844 states and 1310 transitions. Second operand 6 states. [2019-10-15 01:40:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:27,005 INFO L93 Difference]: Finished difference Result 2029 states and 3210 transitions. [2019-10-15 01:40:27,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:40:27,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-15 01:40:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:27,014 INFO L225 Difference]: With dead ends: 2029 [2019-10-15 01:40:27,014 INFO L226 Difference]: Without dead ends: 1113 [2019-10-15 01:40:27,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:40:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2019-10-15 01:40:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 953. [2019-10-15 01:40:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-10-15 01:40:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1450 transitions. [2019-10-15 01:40:27,062 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1450 transitions. Word has length 130 [2019-10-15 01:40:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:27,063 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1450 transitions. [2019-10-15 01:40:27,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:40:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1450 transitions. [2019-10-15 01:40:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:40:27,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:27,068 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:40:27,069 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash -935797971, now seen corresponding path program 1 times [2019-10-15 01:40:27,069 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:27,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587185231] [2019-10-15 01:40:27,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:27,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:27,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:27,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587185231] [2019-10-15 01:40:27,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899596823] [2019-10-15 01:40:27,241 INFO L94 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 [2019-10-15 01:40:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:27,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:40:27,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:40:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:27,544 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:40:27,765 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-15 01:40:27,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:27,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:28,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [902691427] [2019-10-15 01:40:28,052 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:40:28,053 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:40:28,060 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:40:28,069 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:40:28,070 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:40:28,469 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:40:31,183 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 140 for LOIs [2019-10-15 01:40:31,788 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:31,992 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:32,147 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-15 01:40:32,513 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-10-15 01:40:32,722 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-10-15 01:40:32,931 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-10-15 01:40:33,447 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:33,720 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:34,211 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:34,458 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:34,741 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-15 01:40:35,186 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:35,427 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:35,719 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:40:36,784 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:37,024 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:37,293 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:40:37,680 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:37,924 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:38,226 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:40:38,584 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:38,824 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:39,107 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:40:40,107 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:40,384 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:40,642 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:40:41,003 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:41,258 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:41,528 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:40:42,494 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:42,736 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:42,994 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 01:40:43,401 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:43,646 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:43,902 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:40:44,305 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:44,546 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:44,830 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-15 01:40:45,171 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:45,408 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:45,660 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:40:46,010 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:46,256 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:46,508 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:40:46,977 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:47,234 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:47,500 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 01:40:47,901 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:48,144 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:40:48,408 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-15 01:40:48,747 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:48,984 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:49,233 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 01:40:49,591 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:49,849 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:50,097 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 01:40:50,436 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:50,679 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:50,925 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 01:40:51,262 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:51,501 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:51,751 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 01:40:52,084 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:52,324 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:52,603 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:40:52,946 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:53,193 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:53,449 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 01:40:53,795 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:54,036 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:54,291 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-15 01:40:54,684 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:54,919 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:55,175 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-15 01:40:55,565 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:55,809 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:56,062 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 01:40:56,449 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:56,691 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:56,940 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 01:40:57,854 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:58,106 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:58,357 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 01:40:58,696 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:58,940 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:59,194 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-15 01:40:59,588 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:59,839 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:41:00,082 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 01:41:00,428 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:41:00,672 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:41:00,936 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:01,274 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 171