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/product-lines/elevator_spec1_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:29,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:29,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:29,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:29,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:29,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:29,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:29,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:29,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:29,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:29,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:29,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:29,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:29,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:29,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:29,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:29,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:29,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:29,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:29,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:29,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:29,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:29,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:29,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:29,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:29,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:29,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:29,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:29,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:29,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:29,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:29,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:29,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:29,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:29,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:29,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:29,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:29,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:29,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:29,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:29,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:29,734 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 [2019-10-13 23:03:29,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:29,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:29,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:29,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:29,751 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:29,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:29,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:29,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:29,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:29,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:29,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:29,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:29,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:29,754 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:29,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:29,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:29,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:29,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:29,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:29,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:29,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:29,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:29,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:29,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:29,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:29,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:29,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:29,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:29,758 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 [2019-10-13 23:03:30,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:30,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:30,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:30,057 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:30,057 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:30,058 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2019-10-13 23:03:30,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a31d9ddb/6f923860a1e8456089a8cd30e56d0db1/FLAGdac00b268 [2019-10-13 23:03:30,828 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:30,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2019-10-13 23:03:30,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a31d9ddb/6f923860a1e8456089a8cd30e56d0db1/FLAGdac00b268 [2019-10-13 23:03:31,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a31d9ddb/6f923860a1e8456089a8cd30e56d0db1 [2019-10-13 23:03:31,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:31,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:31,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:31,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:31,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:31,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:31" (1/1) ... [2019-10-13 23:03:31,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:31, skipping insertion in model container [2019-10-13 23:03:31,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:31" (1/1) ... [2019-10-13 23:03:31,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:31,184 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:31,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:31,912 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:32,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:32,103 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:32,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32 WrapperNode [2019-10-13 23:03:32,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:32,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:32,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:32,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:32,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:32,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:32,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:32,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:32,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (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 [2019-10-13 23:03:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:32,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:32,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:32,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:32,415 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:32,416 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:32,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:32,416 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:32,416 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:32,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:32,425 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:32,425 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:32,425 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:32,425 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:32,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:37,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:37,684 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:37,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:37 BoogieIcfgContainer [2019-10-13 23:03:37,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:37,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:37,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:37,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:37,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:31" (1/3) ... [2019-10-13 23:03:37,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4324466c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:37, skipping insertion in model container [2019-10-13 23:03:37,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (2/3) ... [2019-10-13 23:03:37,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4324466c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:37, skipping insertion in model container [2019-10-13 23:03:37,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:37" (3/3) ... [2019-10-13 23:03:37,696 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2019-10-13 23:03:37,707 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:37,717 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:37,730 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:37,764 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:37,765 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:37,765 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:37,765 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:37,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:37,765 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:37,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:37,765 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-10-13 23:03:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:37,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:37,840 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:37,843 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:37,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1452797579, now seen corresponding path program 1 times [2019-10-13 23:03:37,860 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:37,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392587367] [2019-10-13 23:03:37,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:37,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:37,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:38,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392587367] [2019-10-13 23:03:38,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:38,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:38,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025537922] [2019-10-13 23:03:38,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:38,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:38,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:38,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:38,563 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-10-13 23:03:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:38,635 INFO L93 Difference]: Finished difference Result 511 states and 751 transitions. [2019-10-13 23:03:38,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:38,640 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-10-13 23:03:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:38,668 INFO L225 Difference]: With dead ends: 511 [2019-10-13 23:03:38,668 INFO L226 Difference]: Without dead ends: 477 [2019-10-13 23:03:38,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-10-13 23:03:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2019-10-13 23:03:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-10-13 23:03:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 700 transitions. [2019-10-13 23:03:38,848 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 700 transitions. Word has length 135 [2019-10-13 23:03:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:38,851 INFO L462 AbstractCegarLoop]: Abstraction has 477 states and 700 transitions. [2019-10-13 23:03:38,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 700 transitions. [2019-10-13 23:03:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:03:38,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:38,861 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:38,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:38,862 INFO L82 PathProgramCache]: Analyzing trace with hash -4130734, now seen corresponding path program 1 times [2019-10-13 23:03:38,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:38,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061568949] [2019-10-13 23:03:38,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:38,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:38,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:39,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061568949] [2019-10-13 23:03:39,447 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:39,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:39,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899119713] [2019-10-13 23:03:39,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:39,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:39,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:39,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:39,456 INFO L87 Difference]: Start difference. First operand 477 states and 700 transitions. Second operand 7 states. [2019-10-13 23:03:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:43,668 INFO L93 Difference]: Finished difference Result 1336 states and 2011 transitions. [2019-10-13 23:03:43,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:43,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-13 23:03:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:43,679 INFO L225 Difference]: With dead ends: 1336 [2019-10-13 23:03:43,679 INFO L226 Difference]: Without dead ends: 912 [2019-10-13 23:03:43,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-13 23:03:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 887. [2019-10-13 23:03:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2019-10-13 23:03:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1330 transitions. [2019-10-13 23:03:43,780 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1330 transitions. Word has length 136 [2019-10-13 23:03:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:43,781 INFO L462 AbstractCegarLoop]: Abstraction has 887 states and 1330 transitions. [2019-10-13 23:03:43,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1330 transitions. [2019-10-13 23:03:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:43,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:43,789 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:43,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash 921546809, now seen corresponding path program 1 times [2019-10-13 23:03:43,791 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:43,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432308679] [2019-10-13 23:03:43,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:44,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432308679] [2019-10-13 23:03:44,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:44,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:44,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990723483] [2019-10-13 23:03:44,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:44,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:44,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:44,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:44,078 INFO L87 Difference]: Start difference. First operand 887 states and 1330 transitions. Second operand 6 states. [2019-10-13 23:03:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:44,803 INFO L93 Difference]: Finished difference Result 926 states and 1386 transitions. [2019-10-13 23:03:44,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:44,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-13 23:03:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:44,812 INFO L225 Difference]: With dead ends: 926 [2019-10-13 23:03:44,813 INFO L226 Difference]: Without dead ends: 909 [2019-10-13 23:03:44,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-13 23:03:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 891. [2019-10-13 23:03:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-13 23:03:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1334 transitions. [2019-10-13 23:03:44,881 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1334 transitions. Word has length 140 [2019-10-13 23:03:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:44,882 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1334 transitions. [2019-10-13 23:03:44,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1334 transitions. [2019-10-13 23:03:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:03:44,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:44,887 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:44,888 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1929054002, now seen corresponding path program 1 times [2019-10-13 23:03:44,889 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:44,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885021429] [2019-10-13 23:03:44,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:44,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:44,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:45,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885021429] [2019-10-13 23:03:45,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:45,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:45,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141773741] [2019-10-13 23:03:45,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:45,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:45,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:45,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:45,135 INFO L87 Difference]: Start difference. First operand 891 states and 1334 transitions. Second operand 8 states. [2019-10-13 23:03:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:45,235 INFO L93 Difference]: Finished difference Result 912 states and 1360 transitions. [2019-10-13 23:03:45,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:45,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-13 23:03:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:45,245 INFO L225 Difference]: With dead ends: 912 [2019-10-13 23:03:45,245 INFO L226 Difference]: Without dead ends: 895 [2019-10-13 23:03:45,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-13 23:03:45,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 891. [2019-10-13 23:03:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-13 23:03:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1332 transitions. [2019-10-13 23:03:45,303 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1332 transitions. Word has length 145 [2019-10-13 23:03:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:45,304 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1332 transitions. [2019-10-13 23:03:45,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1332 transitions. [2019-10-13 23:03:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:03:45,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:45,310 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:45,310 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash -616685527, now seen corresponding path program 1 times [2019-10-13 23:03:45,311 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:45,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959780096] [2019-10-13 23:03:45,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:46,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959780096] [2019-10-13 23:03:46,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314026948] [2019-10-13 23:03:46,443 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 [2019-10-13 23:03:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:47,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:03:47,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:47,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:47,450 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:47,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:48,097 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:03:48,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-10-13 23:03:48,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174278841] [2019-10-13 23:03:48,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:48,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:48,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 23:03:48,104 INFO L87 Difference]: Start difference. First operand 891 states and 1332 transitions. Second operand 7 states. [2019-10-13 23:03:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:48,201 INFO L93 Difference]: Finished difference Result 934 states and 1386 transitions. [2019-10-13 23:03:48,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:48,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:03:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:48,210 INFO L225 Difference]: With dead ends: 934 [2019-10-13 23:03:48,211 INFO L226 Difference]: Without dead ends: 917 [2019-10-13 23:03:48,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:03:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2019-10-13 23:03:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 903. [2019-10-13 23:03:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-10-13 23:03:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1344 transitions. [2019-10-13 23:03:48,276 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1344 transitions. Word has length 160 [2019-10-13 23:03:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:48,276 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1344 transitions. [2019-10-13 23:03:48,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1344 transitions. [2019-10-13 23:03:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:03:48,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:48,282 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:48,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:48,492 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash -252326484, now seen corresponding path program 1 times [2019-10-13 23:03:48,493 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:48,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341912234] [2019-10-13 23:03:48,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:03:49,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341912234] [2019-10-13 23:03:49,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328130432] [2019-10-13 23:03:49,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:49,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-13 23:03:49,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:03:50,348 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:50,522 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-10-13 23:03:50,803 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 12