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_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:10,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:10,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:10,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:10,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:10,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:10,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:10,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:10,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:10,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:10,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:10,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:10,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:10,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:10,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:10,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:10,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:10,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:10,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:10,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:10,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:10,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:10,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:10,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:10,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:10,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:10,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:10,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:10,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:10,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:10,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:10,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:10,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:10,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:10,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:10,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:10,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:10,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:10,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:10,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:10,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:10,718 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 23:04:10,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:10,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:10,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:10,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:10,742 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:10,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:10,743 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:10,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:10,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:10,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:10,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:10,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:10,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:10,745 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:10,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:10,746 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:10,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:10,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:10,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:10,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:10,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:10,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:10,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:10,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:10,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:10,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:10,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:10,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:10,748 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 23:04:11,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:11,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:11,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:11,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:11,052 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:11,053 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-13 23:04:11,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb90694b/b8a77b3c1ca94be88643be5e1873a5e4/FLAGbdf5bdcb0 [2019-10-13 23:04:11,786 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:11,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-13 23:04:11,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb90694b/b8a77b3c1ca94be88643be5e1873a5e4/FLAGbdf5bdcb0 [2019-10-13 23:04:11,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb90694b/b8a77b3c1ca94be88643be5e1873a5e4 [2019-10-13 23:04:11,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:11,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:11,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:11,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:11,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:11,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51638eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11, skipping insertion in model container [2019-10-13 23:04:11,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,982 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:12,076 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:12,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:12,850 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:13,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:13,134 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:13,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13 WrapperNode [2019-10-13 23:04:13,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:13,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:13,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:13,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:13,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (1/1) ... [2019-10-13 23:04:13,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:13,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:13,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:13,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:13,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (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 23:04:13,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:04:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:18,871 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:18,872 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:18,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:18 BoogieIcfgContainer [2019-10-13 23:04:18,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:18,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:18,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:18,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:18,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:11" (1/3) ... [2019-10-13 23:04:18,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:18, skipping insertion in model container [2019-10-13 23:04:18,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:13" (2/3) ... [2019-10-13 23:04:18,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:18, skipping insertion in model container [2019-10-13 23:04:18,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:18" (3/3) ... [2019-10-13 23:04:18,883 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-10-13 23:04:18,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:18,903 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:18,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:18,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:18,946 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:18,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:18,946 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:18,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:18,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:18,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:18,947 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2019-10-13 23:04:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:04:18,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:18,995 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] [2019-10-13 23:04:18,997 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1105412057, now seen corresponding path program 1 times [2019-10-13 23:04:19,014 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:19,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917734047] [2019-10-13 23:04:19,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:19,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917734047] [2019-10-13 23:04:19,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:19,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:19,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044468726] [2019-10-13 23:04:19,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:19,581 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:19,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:19,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:19,603 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 2 states. [2019-10-13 23:04:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:19,680 INFO L93 Difference]: Finished difference Result 488 states and 723 transitions. [2019-10-13 23:04:19,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:19,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:04:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:19,723 INFO L225 Difference]: With dead ends: 488 [2019-10-13 23:04:19,723 INFO L226 Difference]: Without dead ends: 454 [2019-10-13 23:04:19,731 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 23:04:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-10-13 23:04:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2019-10-13 23:04:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-13 23:04:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 672 transitions. [2019-10-13 23:04:19,887 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 672 transitions. Word has length 74 [2019-10-13 23:04:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:19,891 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 672 transitions. [2019-10-13 23:04:19,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 672 transitions. [2019-10-13 23:04:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:04:19,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:19,904 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] [2019-10-13 23:04:19,905 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1603361045, now seen corresponding path program 1 times [2019-10-13 23:04:19,906 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:19,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968818397] [2019-10-13 23:04:19,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:20,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968818397] [2019-10-13 23:04:20,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:20,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:04:20,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922674864] [2019-10-13 23:04:20,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:20,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:20,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:20,431 INFO L87 Difference]: Start difference. First operand 454 states and 672 transitions. Second operand 6 states. [2019-10-13 23:04:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:23,720 INFO L93 Difference]: Finished difference Result 1382 states and 2118 transitions. [2019-10-13 23:04:23,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:04:23,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-13 23:04:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:23,731 INFO L225 Difference]: With dead ends: 1382 [2019-10-13 23:04:23,731 INFO L226 Difference]: Without dead ends: 970 [2019-10-13 23:04:23,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2019-10-13 23:04:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 875. [2019-10-13 23:04:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-10-13 23:04:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1344 transitions. [2019-10-13 23:04:23,811 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1344 transitions. Word has length 75 [2019-10-13 23:04:23,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:23,811 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 1344 transitions. [2019-10-13 23:04:23,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1344 transitions. [2019-10-13 23:04:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:04:23,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:23,817 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:23,817 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1284134923, now seen corresponding path program 1 times [2019-10-13 23:04:23,818 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:23,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990155812] [2019-10-13 23:04:23,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:24,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990155812] [2019-10-13 23:04:24,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:24,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:04:24,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512907933] [2019-10-13 23:04:24,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:04:24,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:24,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:04:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:24,145 INFO L87 Difference]: Start difference. First operand 875 states and 1344 transitions. Second operand 12 states. [2019-10-13 23:04:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:32,346 INFO L93 Difference]: Finished difference Result 2654 states and 4095 transitions. [2019-10-13 23:04:32,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:04:32,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-13 23:04:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:32,361 INFO L225 Difference]: With dead ends: 2654 [2019-10-13 23:04:32,361 INFO L226 Difference]: Without dead ends: 1821 [2019-10-13 23:04:32,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:04:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-10-13 23:04:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1762. [2019-10-13 23:04:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2019-10-13 23:04:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2698 transitions. [2019-10-13 23:04:32,488 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2698 transitions. Word has length 122 [2019-10-13 23:04:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:32,489 INFO L462 AbstractCegarLoop]: Abstraction has 1762 states and 2698 transitions. [2019-10-13 23:04:32,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:04:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2698 transitions. [2019-10-13 23:04:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 23:04:32,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:32,493 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:32,494 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:32,494 INFO L82 PathProgramCache]: Analyzing trace with hash -340449060, now seen corresponding path program 1 times [2019-10-13 23:04:32,495 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:32,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428125469] [2019-10-13 23:04:32,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:32,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:32,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:32,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428125469] [2019-10-13 23:04:32,712 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:32,712 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:32,712 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865921840] [2019-10-13 23:04:32,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:32,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:32,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:32,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:32,714 INFO L87 Difference]: Start difference. First operand 1762 states and 2698 transitions. Second operand 4 states. [2019-10-13 23:04:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:34,706 INFO L93 Difference]: Finished difference Result 4521 states and 7073 transitions. [2019-10-13 23:04:34,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:34,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 23:04:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:34,735 INFO L225 Difference]: With dead ends: 4521 [2019-10-13 23:04:34,735 INFO L226 Difference]: Without dead ends: 2801 [2019-10-13 23:04:34,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-10-13 23:04:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2720. [2019-10-13 23:04:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2720 states. [2019-10-13 23:04:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4209 transitions. [2019-10-13 23:04:34,974 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4209 transitions. Word has length 123 [2019-10-13 23:04:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:34,977 INFO L462 AbstractCegarLoop]: Abstraction has 2720 states and 4209 transitions. [2019-10-13 23:04:34,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4209 transitions. [2019-10-13 23:04:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:04:34,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:34,981 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:34,982 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1965396766, now seen corresponding path program 1 times [2019-10-13 23:04:34,983 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:34,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465249958] [2019-10-13 23:04:34,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:35,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465249958] [2019-10-13 23:04:35,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:35,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:35,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471526165] [2019-10-13 23:04:35,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:35,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:35,187 INFO L87 Difference]: Start difference. First operand 2720 states and 4209 transitions. Second operand 4 states. [2019-10-13 23:04:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:37,104 INFO L93 Difference]: Finished difference Result 7420 states and 11858 transitions. [2019-10-13 23:04:37,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:37,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 23:04:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:37,141 INFO L225 Difference]: With dead ends: 7420 [2019-10-13 23:04:37,141 INFO L226 Difference]: Without dead ends: 4743 [2019-10-13 23:04:37,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2019-10-13 23:04:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4629. [2019-10-13 23:04:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2019-10-13 23:04:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7294 transitions. [2019-10-13 23:04:37,459 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7294 transitions. Word has length 124 [2019-10-13 23:04:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:37,460 INFO L462 AbstractCegarLoop]: Abstraction has 4629 states and 7294 transitions. [2019-10-13 23:04:37,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7294 transitions. [2019-10-13 23:04:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:04:37,470 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:37,471 INFO L380 BasicCegarLoop]: trace histogram [3, 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 23:04:37,474 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash -799164194, now seen corresponding path program 1 times [2019-10-13 23:04:37,475 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:37,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157164333] [2019-10-13 23:04:37,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:37,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:37,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:37,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157164333] [2019-10-13 23:04:37,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:37,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:37,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458818188] [2019-10-13 23:04:37,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:37,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:37,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:37,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:37,806 INFO L87 Difference]: Start difference. First operand 4629 states and 7294 transitions. Second operand 4 states. [2019-10-13 23:04:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:39,740 INFO L93 Difference]: Finished difference Result 13234 states and 21956 transitions. [2019-10-13 23:04:39,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:39,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 23:04:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:39,811 INFO L225 Difference]: With dead ends: 13234 [2019-10-13 23:04:39,811 INFO L226 Difference]: Without dead ends: 8650 [2019-10-13 23:04:39,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8650 states. [2019-10-13 23:04:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8650 to 8471. [2019-10-13 23:04:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8471 states. [2019-10-13 23:04:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 13782 transitions. [2019-10-13 23:04:40,439 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 13782 transitions. Word has length 125 [2019-10-13 23:04:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:40,443 INFO L462 AbstractCegarLoop]: Abstraction has 8471 states and 13782 transitions. [2019-10-13 23:04:40,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 13782 transitions. [2019-10-13 23:04:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:04:40,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:40,450 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:40,450 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash 994311076, now seen corresponding path program 1 times [2019-10-13 23:04:40,451 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:40,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92980446] [2019-10-13 23:04:40,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:40,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92980446] [2019-10-13 23:04:40,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:40,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:40,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092853343] [2019-10-13 23:04:40,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:40,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:40,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:40,648 INFO L87 Difference]: Start difference. First operand 8471 states and 13782 transitions. Second operand 4 states. [2019-10-13 23:04:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:42,690 INFO L93 Difference]: Finished difference Result 24923 states and 44009 transitions. [2019-10-13 23:04:42,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:42,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-13 23:04:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:42,812 INFO L225 Difference]: With dead ends: 24923 [2019-10-13 23:04:42,812 INFO L226 Difference]: Without dead ends: 16501 [2019-10-13 23:04:42,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16501 states.