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_spec14_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:27,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:27,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:27,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:27,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:27,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:27,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:27,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:27,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:27,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:27,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:27,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:27,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:27,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:27,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:27,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:27,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:27,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:27,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:27,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:27,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:27,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:27,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:27,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:27,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:27,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:27,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:27,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:27,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:27,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:27,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:27,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:27,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:27,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:27,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:27,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:27,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:27,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:27,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:27,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:27,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:27,757 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 03:06:27,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:27,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:27,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:27,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:27,798 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:27,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:27,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:27,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:27,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:27,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:27,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:27,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:27,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:27,801 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:27,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:27,802 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:27,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:27,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:27,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:27,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:27,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:27,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:27,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:27,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:27,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:27,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:27,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:27,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:27,807 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 03:06:28,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:28,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:28,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:28,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:28,137 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:28,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-15 03:06:28,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c994292/914eb06de11d411f99f12b6ae54ca81c/FLAG624e47b84 [2019-10-15 03:06:28,996 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:28,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-15 03:06:29,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c994292/914eb06de11d411f99f12b6ae54ca81c/FLAG624e47b84 [2019-10-15 03:06:29,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c994292/914eb06de11d411f99f12b6ae54ca81c [2019-10-15 03:06:29,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:29,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:29,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:29,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:29,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:29,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af97dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29, skipping insertion in model container [2019-10-15 03:06:29,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,207 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:29,302 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:30,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:30,209 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:30,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:30,416 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:30,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30 WrapperNode [2019-10-15 03:06:30,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:30,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:30,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:30,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:30,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:30,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:30,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:30,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:30,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (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 03:06:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:30,720 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:30,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:30,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:30,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:30,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:30,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:30,726 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:30,726 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:30,727 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:30,733 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:30,736 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:30,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:30,736 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:30,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:30,755 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:30,755 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:37,494 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:37,495 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:37,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37 BoogieIcfgContainer [2019-10-15 03:06:37,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:37,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:37,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:37,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:37,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:29" (1/3) ... [2019-10-15 03:06:37,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69de8f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (2/3) ... [2019-10-15 03:06:37,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69de8f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37" (3/3) ... [2019-10-15 03:06:37,505 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2019-10-15 03:06:37,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:37,532 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:37,544 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:37,598 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:37,598 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:37,598 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:37,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:37,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:37,599 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:37,599 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:37,599 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states. [2019-10-15 03:06:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:06:37,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:37,676 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:37,679 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2098909853, now seen corresponding path program 1 times [2019-10-15 03:06:37,699 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:37,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590922387] [2019-10-15 03:06:37,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:38,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590922387] [2019-10-15 03:06:38,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:38,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:38,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913968719] [2019-10-15 03:06:38,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:38,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:38,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:38,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:38,739 INFO L87 Difference]: Start difference. First operand 572 states. Second operand 7 states. [2019-10-15 03:06:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,342 INFO L93 Difference]: Finished difference Result 1029 states and 1503 transitions. [2019-10-15 03:06:41,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:41,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:06:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:41,372 INFO L225 Difference]: With dead ends: 1029 [2019-10-15 03:06:41,373 INFO L226 Difference]: Without dead ends: 579 [2019-10-15 03:06:41,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-15 03:06:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 573. [2019-10-15 03:06:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-15 03:06:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 815 transitions. [2019-10-15 03:06:41,530 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 815 transitions. Word has length 110 [2019-10-15 03:06:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,531 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 815 transitions. [2019-10-15 03:06:41,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 815 transitions. [2019-10-15 03:06:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:06:41,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,545 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:41,546 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:41,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:41,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1562840757, now seen corresponding path program 1 times [2019-10-15 03:06:41,547 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:41,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210417258] [2019-10-15 03:06:41,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 03:06:41,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210417258] [2019-10-15 03:06:41,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:41,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:41,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690566043] [2019-10-15 03:06:41,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:41,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:41,889 INFO L87 Difference]: Start difference. First operand 573 states and 815 transitions. Second operand 5 states. [2019-10-15 03:06:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,989 INFO L93 Difference]: Finished difference Result 1121 states and 1609 transitions. [2019-10-15 03:06:41,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:41,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 03:06:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:42,013 INFO L225 Difference]: With dead ends: 1121 [2019-10-15 03:06:42,013 INFO L226 Difference]: Without dead ends: 579 [2019-10-15 03:06:42,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-15 03:06:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-10-15 03:06:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-15 03:06:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 821 transitions. [2019-10-15 03:06:42,106 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 821 transitions. Word has length 150 [2019-10-15 03:06:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:42,107 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 821 transitions. [2019-10-15 03:06:42,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 821 transitions. [2019-10-15 03:06:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 03:06:42,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:42,117 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:42,117 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:42,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1474737883, now seen corresponding path program 1 times [2019-10-15 03:06:42,118 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:42,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145169385] [2019-10-15 03:06:42,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:42,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145169385] [2019-10-15 03:06:42,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496627513] [2019-10-15 03:06:42,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:43,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 03:06:43,166 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:43,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:43,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:43,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307683208] [2019-10-15 03:06:43,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:43,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:43,740 INFO L87 Difference]: Start difference. First operand 579 states and 821 transitions. Second operand 4 states. [2019-10-15 03:06:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:44,123 INFO L93 Difference]: Finished difference Result 1166 states and 1693 transitions. [2019-10-15 03:06:44,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:44,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-15 03:06:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:44,129 INFO L225 Difference]: With dead ends: 1166 [2019-10-15 03:06:44,130 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 03:06:44,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 03:06:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 03:06:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 03:06:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 894 transitions. [2019-10-15 03:06:44,173 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 894 transitions. Word has length 159 [2019-10-15 03:06:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:44,174 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 894 transitions. [2019-10-15 03:06:44,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 894 transitions. [2019-10-15 03:06:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-15 03:06:44,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:44,182 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:44,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:44,392 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2112092363, now seen corresponding path program 1 times [2019-10-15 03:06:44,393 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:44,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759103155] [2019-10-15 03:06:44,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2019-10-15 03:06:44,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759103155] [2019-10-15 03:06:44,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858916583] [2019-10-15 03:06:44,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:45,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2019-10-15 03:06:45,663 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2019-10-15 03:06:46,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:46,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-15 03:06:46,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779521652] [2019-10-15 03:06:46,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:46,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:46,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:46,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:46,330 INFO L87 Difference]: Start difference. First operand 618 states and 894 transitions. Second operand 4 states. [2019-10-15 03:06:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:46,715 INFO L93 Difference]: Finished difference Result 1244 states and 1838 transitions. [2019-10-15 03:06:46,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:46,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2019-10-15 03:06:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:46,721 INFO L225 Difference]: With dead ends: 1244 [2019-10-15 03:06:46,722 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 03:06:46,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 03:06:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 03:06:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 03:06:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 967 transitions. [2019-10-15 03:06:46,759 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 967 transitions. Word has length 286 [2019-10-15 03:06:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:46,760 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 967 transitions. [2019-10-15 03:06:46,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 967 transitions. [2019-10-15 03:06:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 03:06:46,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:46,767 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:46,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:46,985 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:46,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:46,986 INFO L82 PathProgramCache]: Analyzing trace with hash -761072811, now seen corresponding path program 1 times [2019-10-15 03:06:46,986 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:46,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472851323] [2019-10-15 03:06:46,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-10-15 03:06:47,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472851323] [2019-10-15 03:06:47,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709800676] [2019-10-15 03:06:47,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:47,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-15 03:06:48,023 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-10-15 03:06:48,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:48,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:48,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471142637] [2019-10-15 03:06:48,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:48,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:48,450 INFO L87 Difference]: Start difference. First operand 657 states and 967 transitions. Second operand 4 states. [2019-10-15 03:06:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:48,760 INFO L93 Difference]: Finished difference Result 1322 states and 1983 transitions. [2019-10-15 03:06:48,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:48,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2019-10-15 03:06:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:48,769 INFO L225 Difference]: With dead ends: 1322 [2019-10-15 03:06:48,770 INFO L226 Difference]: Without dead ends: 696 [2019-10-15 03:06:48,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-15 03:06:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-10-15 03:06:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-15 03:06:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1040 transitions. [2019-10-15 03:06:48,813 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1040 transitions. Word has length 229 [2019-10-15 03:06:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:48,814 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 1040 transitions. [2019-10-15 03:06:48,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1040 transitions. [2019-10-15 03:06:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 03:06:48,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:48,822 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:49,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:49,032 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1335385787, now seen corresponding path program 1 times [2019-10-15 03:06:49,033 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:49,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875374875] [2019-10-15 03:06:49,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:49,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875374875] [2019-10-15 03:06:49,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624112864] [2019-10-15 03:06:49,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:49,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 03:06:49,961 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:50,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:50,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:50,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767070424] [2019-10-15 03:06:50,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:50,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:50,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:50,240 INFO L87 Difference]: Start difference. First operand 696 states and 1040 transitions. Second operand 4 states. [2019-10-15 03:06:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:50,476 INFO L93 Difference]: Finished difference Result 1400 states and 2128 transitions. [2019-10-15 03:06:50,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:50,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-15 03:06:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:50,485 INFO L225 Difference]: With dead ends: 1400 [2019-10-15 03:06:50,485 INFO L226 Difference]: Without dead ends: 735 [2019-10-15 03:06:50,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-10-15 03:06:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2019-10-15 03:06:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-10-15 03:06:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1113 transitions. [2019-10-15 03:06:50,521 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1113 transitions. Word has length 171 [2019-10-15 03:06:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:50,522 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 1113 transitions. [2019-10-15 03:06:50,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1113 transitions. [2019-10-15 03:06:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 03:06:50,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:50,527 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:50,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:50,738 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash 441714739, now seen corresponding path program 1 times [2019-10-15 03:06:50,739 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:50,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309689873] [2019-10-15 03:06:50,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:51,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309689873] [2019-10-15 03:06:51,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962720414] [2019-10-15 03:06:51,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-15 03:06:51,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 03:06:51,812 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:52,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:52,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1664312889] [2019-10-15 03:06:52,565 INFO L162 IcfgInterpreter]: Started Sifa with 135 locations of interest [2019-10-15 03:06:52,565 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:06:52,572 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:06:52,584 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:06:52,585 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs