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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:51,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:51,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:51,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:51,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:51,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:51,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:51,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:51,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:51,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:51,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:51,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:51,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:51,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:51,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:51,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:51,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:51,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:51,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:51,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:51,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:51,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:51,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:51,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:51,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:51,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:51,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:51,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:51,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:51,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:51,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:51,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:51,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:51,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:51,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:51,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:51,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:51,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:51,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:51,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:51,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:51,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:07:51,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:51,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:51,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:51,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:51,747 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:51,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:51,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:51,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:51,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:51,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:51,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:51,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:51,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:51,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:51,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:51,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:51,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:51,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:51,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:51,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:51,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:51,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:51,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:51,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:07:52,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:52,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:52,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:52,095 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:52,095 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:52,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-10-15 03:07:52,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e16f04b0/de88ef65972a410d8d8261dce37a157b/FLAGc3b5c8e8b [2019-10-15 03:07:52,961 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:52,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-10-15 03:07:52,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e16f04b0/de88ef65972a410d8d8261dce37a157b/FLAGc3b5c8e8b [2019-10-15 03:07:53,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e16f04b0/de88ef65972a410d8d8261dce37a157b [2019-10-15 03:07:53,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:53,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:53,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:53,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:53,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:53,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24048c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53, skipping insertion in model container [2019-10-15 03:07:53,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,116 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:53,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:54,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:54,086 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:54,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:54,330 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:54,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54 WrapperNode [2019-10-15 03:07:54,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:54,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:54,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:54,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:54,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:54,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:54,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:54,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:54,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:07:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:07:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:00,234 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:00,235 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:00,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:00 BoogieIcfgContainer [2019-10-15 03:08:00,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:00,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:00,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:00,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:00,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:53" (1/3) ... [2019-10-15 03:08:00,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731ce8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:00, skipping insertion in model container [2019-10-15 03:08:00,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54" (2/3) ... [2019-10-15 03:08:00,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731ce8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:00, skipping insertion in model container [2019-10-15 03:08:00,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:00" (3/3) ... [2019-10-15 03:08:00,246 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2019-10-15 03:08:00,257 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:00,268 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:00,282 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:00,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:00,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:00,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:00,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:00,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:00,316 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:00,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:00,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states. [2019-10-15 03:08:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:00,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:00,377 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] [2019-10-15 03:08:00,380 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -977747574, now seen corresponding path program 1 times [2019-10-15 03:08:00,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:00,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103906983] [2019-10-15 03:08:00,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:00,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:00,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:01,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103906983] [2019-10-15 03:08:01,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:01,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:01,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220656756] [2019-10-15 03:08:01,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:01,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:01,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:01,231 INFO L87 Difference]: Start difference. First operand 564 states. Second operand 2 states. [2019-10-15 03:08:01,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:01,310 INFO L93 Difference]: Finished difference Result 467 states and 697 transitions. [2019-10-15 03:08:01,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:01,319 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:08:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:01,359 INFO L225 Difference]: With dead ends: 467 [2019-10-15 03:08:01,359 INFO L226 Difference]: Without dead ends: 433 [2019-10-15 03:08:01,365 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 [2019-10-15 03:08:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-15 03:08:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-10-15 03:08:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-15 03:08:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 646 transitions. [2019-10-15 03:08:01,470 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 646 transitions. Word has length 112 [2019-10-15 03:08:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:01,473 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 646 transitions. [2019-10-15 03:08:01,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 646 transitions. [2019-10-15 03:08:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:08:01,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:01,483 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] [2019-10-15 03:08:01,483 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:01,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1340082542, now seen corresponding path program 1 times [2019-10-15 03:08:01,484 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:01,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442365664] [2019-10-15 03:08:01,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:01,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:01,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:01,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442365664] [2019-10-15 03:08:01,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:01,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:01,930 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828552469] [2019-10-15 03:08:01,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:01,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:01,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:01,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:01,934 INFO L87 Difference]: Start difference. First operand 433 states and 646 transitions. Second operand 7 states. [2019-10-15 03:08:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:06,471 INFO L93 Difference]: Finished difference Result 1226 states and 1875 transitions. [2019-10-15 03:08:06,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:06,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:08:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:06,482 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 03:08:06,482 INFO L226 Difference]: Without dead ends: 835 [2019-10-15 03:08:06,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2019-10-15 03:08:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 810. [2019-10-15 03:08:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-15 03:08:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1235 transitions. [2019-10-15 03:08:06,575 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1235 transitions. Word has length 113 [2019-10-15 03:08:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:06,576 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1235 transitions. [2019-10-15 03:08:06,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1235 transitions. [2019-10-15 03:08:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:06,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:06,581 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] [2019-10-15 03:08:06,582 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1965967932, now seen corresponding path program 1 times [2019-10-15 03:08:06,582 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:06,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454297640] [2019-10-15 03:08:06,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:06,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454297640] [2019-10-15 03:08:06,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:06,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:06,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977481559] [2019-10-15 03:08:06,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:06,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:06,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:06,785 INFO L87 Difference]: Start difference. First operand 810 states and 1235 transitions. Second operand 4 states. [2019-10-15 03:08:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:09,206 INFO L93 Difference]: Finished difference Result 2424 states and 3790 transitions. [2019-10-15 03:08:09,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:09,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:09,231 INFO L225 Difference]: With dead ends: 2424 [2019-10-15 03:08:09,231 INFO L226 Difference]: Without dead ends: 1656 [2019-10-15 03:08:09,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2019-10-15 03:08:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1558. [2019-10-15 03:08:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-15 03:08:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2421 transitions. [2019-10-15 03:08:09,387 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2421 transitions. Word has length 117 [2019-10-15 03:08:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:09,390 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2421 transitions. [2019-10-15 03:08:09,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2421 transitions. [2019-10-15 03:08:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:09,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:09,397 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] [2019-10-15 03:08:09,398 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash -816771845, now seen corresponding path program 1 times [2019-10-15 03:08:09,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:09,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128841762] [2019-10-15 03:08:09,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:09,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128841762] [2019-10-15 03:08:09,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:09,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:09,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327623210] [2019-10-15 03:08:09,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:09,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:09,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:09,662 INFO L87 Difference]: Start difference. First operand 1558 states and 2421 transitions. Second operand 4 states. [2019-10-15 03:08:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:12,601 INFO L93 Difference]: Finished difference Result 4615 states and 7330 transitions. [2019-10-15 03:08:12,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:12,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:08:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:12,632 INFO L225 Difference]: With dead ends: 4615 [2019-10-15 03:08:12,632 INFO L226 Difference]: Without dead ends: 3100 [2019-10-15 03:08:12,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2019-10-15 03:08:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2979. [2019-10-15 03:08:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2019-10-15 03:08:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4694 transitions. [2019-10-15 03:08:12,854 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4694 transitions. Word has length 118 [2019-10-15 03:08:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:12,856 INFO L462 AbstractCegarLoop]: Abstraction has 2979 states and 4694 transitions. [2019-10-15 03:08:12,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4694 transitions. [2019-10-15 03:08:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:12,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:12,861 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] [2019-10-15 03:08:12,861 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash 448572390, now seen corresponding path program 1 times [2019-10-15 03:08:12,862 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:12,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194468897] [2019-10-15 03:08:12,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:12,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:12,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:13,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194468897] [2019-10-15 03:08:13,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:13,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:13,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962067588] [2019-10-15 03:08:13,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:13,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:13,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:13,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:13,047 INFO L87 Difference]: Start difference. First operand 2979 states and 4694 transitions. Second operand 4 states. [2019-10-15 03:08:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:15,254 INFO L93 Difference]: Finished difference Result 8930 states and 14486 transitions. [2019-10-15 03:08:15,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:15,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:08:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:15,301 INFO L225 Difference]: With dead ends: 8930 [2019-10-15 03:08:15,301 INFO L226 Difference]: Without dead ends: 5996 [2019-10-15 03:08:15,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2019-10-15 03:08:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5830. [2019-10-15 03:08:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5830 states. [2019-10-15 03:08:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 9356 transitions. [2019-10-15 03:08:15,722 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 9356 transitions. Word has length 119 [2019-10-15 03:08:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:15,726 INFO L462 AbstractCegarLoop]: Abstraction has 5830 states and 9356 transitions. [2019-10-15 03:08:15,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 9356 transitions. [2019-10-15 03:08:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:08:15,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:15,737 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] [2019-10-15 03:08:15,738 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1019541917, now seen corresponding path program 1 times [2019-10-15 03:08:15,739 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:15,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729835218] [2019-10-15 03:08:15,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:15,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:15,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:16,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729835218] [2019-10-15 03:08:16,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:16,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:16,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582339863] [2019-10-15 03:08:16,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:16,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:16,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:16,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:16,042 INFO L87 Difference]: Start difference. First operand 5830 states and 9356 transitions. Second operand 4 states. [2019-10-15 03:08:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:19,000 INFO L93 Difference]: Finished difference Result 17585 states and 29529 transitions. [2019-10-15 03:08:19,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:19,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:08:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:19,093 INFO L225 Difference]: With dead ends: 17585 [2019-10-15 03:08:19,094 INFO L226 Difference]: Without dead ends: 11804 [2019-10-15 03:08:19,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2019-10-15 03:08:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 11549. [2019-10-15 03:08:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11549 states. [2019-10-15 03:08:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 19090 transitions. [2019-10-15 03:08:19,896 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 19090 transitions. Word has length 120 [2019-10-15 03:08:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:19,896 INFO L462 AbstractCegarLoop]: Abstraction has 11549 states and 19090 transitions. [2019-10-15 03:08:19,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 19090 transitions. [2019-10-15 03:08:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:08:19,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:19,900 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] [2019-10-15 03:08:19,900 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:19,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1539731976, now seen corresponding path program 1 times [2019-10-15 03:08:19,901 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:19,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384225651] [2019-10-15 03:08:19,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:20,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384225651] [2019-10-15 03:08:20,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:20,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:20,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877744596] [2019-10-15 03:08:20,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:20,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:20,113 INFO L87 Difference]: Start difference. First operand 11549 states and 19090 transitions. Second operand 4 states. [2019-10-15 03:08:24,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:24,257 INFO L93 Difference]: Finished difference Result 34972 states and 62257 transitions. [2019-10-15 03:08:24,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:24,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-15 03:08:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:24,432 INFO L225 Difference]: With dead ends: 34972 [2019-10-15 03:08:24,433 INFO L226 Difference]: Without dead ends: 23468 [2019-10-15 03:08:24,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2019-10-15 03:08:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 22886. [2019-10-15 03:08:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states.