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_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:19,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:19,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:19,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:19,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:19,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:19,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:19,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:19,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:19,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:19,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:19,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:19,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:19,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:19,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:19,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:19,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:19,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:19,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:19,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:19,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:19,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:19,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:19,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:19,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:19,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:19,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:19,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:19,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:19,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:19,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:19,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:19,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:19,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:19,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:19,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:19,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:19,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:19,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:19,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:19,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:19,710 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 03:09:19,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:19,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:19,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:19,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:19,729 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:19,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:19,730 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:19,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:19,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:19,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:19,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:19,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:19,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:19,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:19,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:19,732 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:19,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:19,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:19,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:19,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:19,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:19,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:19,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:19,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:19,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:19,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:19,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:19,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:19,735 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 03:09:20,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:20,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:20,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:20,132 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:20,133 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:20,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-10-15 03:09:20,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c334a35f3/7fcea95c50414a26b183816e13651655/FLAGa1e7f0137 [2019-10-15 03:09:21,018 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:21,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-10-15 03:09:21,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c334a35f3/7fcea95c50414a26b183816e13651655/FLAGa1e7f0137 [2019-10-15 03:09:21,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c334a35f3/7fcea95c50414a26b183816e13651655 [2019-10-15 03:09:21,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:21,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:21,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:21,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:21,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:21,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:21,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:21, skipping insertion in model container [2019-10-15 03:09:21,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:21,142 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:21,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:22,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:22,147 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:22,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:22,455 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:22,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22 WrapperNode [2019-10-15 03:09:22,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:22,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:22,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:22,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:22,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (1/1) ... [2019-10-15 03:09:22,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:22,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:22,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:22,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:22,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (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 03:09:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:22,779 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-10-15 03:09:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-10-15 03:09:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:29,467 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:29,467 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:29,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:29 BoogieIcfgContainer [2019-10-15 03:09:29,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:29,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:29,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:29,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:29,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:21" (1/3) ... [2019-10-15 03:09:29,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b7b7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:29, skipping insertion in model container [2019-10-15 03:09:29,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:22" (2/3) ... [2019-10-15 03:09:29,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b7b7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:29, skipping insertion in model container [2019-10-15 03:09:29,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:29" (3/3) ... [2019-10-15 03:09:29,477 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2019-10-15 03:09:29,487 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:29,498 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:29,508 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:29,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:29,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:29,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:29,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:29,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:29,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:29,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:29,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-10-15 03:09:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:29,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:29,601 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:29,603 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:29,610 INFO L82 PathProgramCache]: Analyzing trace with hash 693571216, now seen corresponding path program 1 times [2019-10-15 03:09:29,619 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:29,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794422589] [2019-10-15 03:09:29,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:30,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794422589] [2019-10-15 03:09:30,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:30,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:09:30,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443073858] [2019-10-15 03:09:30,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:30,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:30,474 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 3 states. [2019-10-15 03:09:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:30,921 INFO L93 Difference]: Finished difference Result 1318 states and 2026 transitions. [2019-10-15 03:09:30,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:30,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:09:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:30,952 INFO L225 Difference]: With dead ends: 1318 [2019-10-15 03:09:30,952 INFO L226 Difference]: Without dead ends: 866 [2019-10-15 03:09:30,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-15 03:09:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 820. [2019-10-15 03:09:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-15 03:09:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1256 transitions. [2019-10-15 03:09:31,120 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1256 transitions. Word has length 81 [2019-10-15 03:09:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:31,122 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1256 transitions. [2019-10-15 03:09:31,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1256 transitions. [2019-10-15 03:09:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-15 03:09:31,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:31,142 INFO L380 BasicCegarLoop]: trace histogram [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 03:09:31,145 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1331172463, now seen corresponding path program 1 times [2019-10-15 03:09:31,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:31,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416686640] [2019-10-15 03:09:31,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:31,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416686640] [2019-10-15 03:09:31,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:31,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:31,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076784660] [2019-10-15 03:09:31,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:31,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:31,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:31,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:31,681 INFO L87 Difference]: Start difference. First operand 820 states and 1256 transitions. Second operand 7 states. [2019-10-15 03:09:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:36,011 INFO L93 Difference]: Finished difference Result 2446 states and 3840 transitions. [2019-10-15 03:09:36,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:36,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2019-10-15 03:09:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:36,028 INFO L225 Difference]: With dead ends: 2446 [2019-10-15 03:09:36,028 INFO L226 Difference]: Without dead ends: 1657 [2019-10-15 03:09:36,034 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2019-10-15 03:09:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1609. [2019-10-15 03:09:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-10-15 03:09:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2498 transitions. [2019-10-15 03:09:36,135 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2498 transitions. Word has length 109 [2019-10-15 03:09:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:36,136 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2498 transitions. [2019-10-15 03:09:36,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2498 transitions. [2019-10-15 03:09:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:09:36,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:36,140 INFO L380 BasicCegarLoop]: trace histogram [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 03:09:36,140 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -694421880, now seen corresponding path program 1 times [2019-10-15 03:09:36,141 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:36,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126249211] [2019-10-15 03:09:36,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:36,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126249211] [2019-10-15 03:09:36,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:36,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:36,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663906395] [2019-10-15 03:09:36,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:36,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:36,544 INFO L87 Difference]: Start difference. First operand 1609 states and 2498 transitions. Second operand 8 states. [2019-10-15 03:09:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:42,390 INFO L93 Difference]: Finished difference Result 5863 states and 9213 transitions. [2019-10-15 03:09:42,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:42,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-15 03:09:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:42,438 INFO L225 Difference]: With dead ends: 5863 [2019-10-15 03:09:42,438 INFO L226 Difference]: Without dead ends: 4285 [2019-10-15 03:09:42,451 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2019-10-15 03:09:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 4269. [2019-10-15 03:09:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2019-10-15 03:09:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6557 transitions. [2019-10-15 03:09:42,673 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6557 transitions. Word has length 107 [2019-10-15 03:09:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:42,673 INFO L462 AbstractCegarLoop]: Abstraction has 4269 states and 6557 transitions. [2019-10-15 03:09:42,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6557 transitions. [2019-10-15 03:09:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:09:42,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:42,677 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:42,678 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1786234194, now seen corresponding path program 1 times [2019-10-15 03:09:42,678 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:42,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272807494] [2019-10-15 03:09:42,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:42,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:42,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:42,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272807494] [2019-10-15 03:09:42,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976554602] [2019-10-15 03:09:42,930 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 03:09:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:43,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:43,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:43,798 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:44,038 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:44,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:44,039 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965685047] [2019-10-15 03:09:44,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:44,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:44,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:44,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:44,042 INFO L87 Difference]: Start difference. First operand 4269 states and 6557 transitions. Second operand 3 states. [2019-10-15 03:09:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:44,466 INFO L93 Difference]: Finished difference Result 12077 states and 19230 transitions. [2019-10-15 03:09:44,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:44,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-15 03:09:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:44,573 INFO L225 Difference]: With dead ends: 12077 [2019-10-15 03:09:44,574 INFO L226 Difference]: Without dead ends: 7839 [2019-10-15 03:09:44,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2019-10-15 03:09:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 7529. [2019-10-15 03:09:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7529 states. [2019-10-15 03:09:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11714 transitions. [2019-10-15 03:09:45,403 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11714 transitions. Word has length 111 [2019-10-15 03:09:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:45,407 INFO L462 AbstractCegarLoop]: Abstraction has 7529 states and 11714 transitions. [2019-10-15 03:09:45,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11714 transitions. [2019-10-15 03:09:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:09:45,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:45,412 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:45,624 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:45,624 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash -922025891, now seen corresponding path program 1 times [2019-10-15 03:09:45,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:45,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067807468] [2019-10-15 03:09:45,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:45,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:45,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:46,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067807468] [2019-10-15 03:09:46,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862254255] [2019-10-15 03:09:46,072 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 03:09:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:46,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:46,958 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:47,333 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:47,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:47,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508180514] [2019-10-15 03:09:47,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:47,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:47,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:47,338 INFO L87 Difference]: Start difference. First operand 7529 states and 11714 transitions. Second operand 3 states. [2019-10-15 03:09:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:47,816 INFO L93 Difference]: Finished difference Result 16635 states and 26341 transitions. [2019-10-15 03:09:47,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:47,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-15 03:09:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:47,942 INFO L225 Difference]: With dead ends: 16635 [2019-10-15 03:09:47,942 INFO L226 Difference]: Without dead ends: 9137 [2019-10-15 03:09:48,007 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9137 states. [2019-10-15 03:09:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 8923. [2019-10-15 03:09:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8923 states. [2019-10-15 03:09:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8923 states to 8923 states and 13865 transitions. [2019-10-15 03:09:48,581 INFO L78 Accepts]: Start accepts. Automaton has 8923 states and 13865 transitions. Word has length 113 [2019-10-15 03:09:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:48,584 INFO L462 AbstractCegarLoop]: Abstraction has 8923 states and 13865 transitions. [2019-10-15 03:09:48,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 8923 states and 13865 transitions. [2019-10-15 03:09:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:48,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:48,601 INFO L380 BasicCegarLoop]: trace histogram [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 03:09:48,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:48,814 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 697797265, now seen corresponding path program 1 times [2019-10-15 03:09:48,814 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:48,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266687535] [2019-10-15 03:09:48,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:48,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:48,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:49,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266687535] [2019-10-15 03:09:49,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:49,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:49,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526810304] [2019-10-15 03:09:49,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:49,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:49,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:49,632 INFO L87 Difference]: Start difference. First operand 8923 states and 13865 transitions. Second operand 10 states. [2019-10-15 03:09:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:51,822 INFO L93 Difference]: Finished difference Result 19637 states and 30850 transitions. [2019-10-15 03:09:51,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:51,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2019-10-15 03:09:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:51,913 INFO L225 Difference]: With dead ends: 19637 [2019-10-15 03:09:51,913 INFO L226 Difference]: Without dead ends: 10745 [2019-10-15 03:09:51,955 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:09:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2019-10-15 03:09:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10703. [2019-10-15 03:09:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10703 states. [2019-10-15 03:09:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10703 states to 10703 states and 16620 transitions. [2019-10-15 03:09:53,520 INFO L78 Accepts]: Start accepts. Automaton has 10703 states and 16620 transitions. Word has length 118 [2019-10-15 03:09:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:53,520 INFO L462 AbstractCegarLoop]: Abstraction has 10703 states and 16620 transitions. [2019-10-15 03:09:53,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 10703 states and 16620 transitions. [2019-10-15 03:09:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:53,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:53,524 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:53,525 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1827642056, now seen corresponding path program 1 times [2019-10-15 03:09:53,525 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:53,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875222491] [2019-10-15 03:09:53,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:53,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:53,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:53,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875222491] [2019-10-15 03:09:53,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:53,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:53,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20360926] [2019-10-15 03:09:53,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:53,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:53,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:53,905 INFO L87 Difference]: Start difference. First operand 10703 states and 16620 transitions. Second operand 10 states.