java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:29,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:29,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:29,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:29,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:29,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:29,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:29,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:29,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:29,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:29,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:29,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:29,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:29,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:29,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:29,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:29,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:29,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:29,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:29,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:29,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:29,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:29,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:29,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:29,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:29,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:29,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:29,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:29,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:29,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:29,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:29,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:29,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:29,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:29,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:29,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:29,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:29,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:29,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:29,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:29,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:29,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:03:29,934 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:29,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:29,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:29,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:29,936 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:29,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:29,937 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:29,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:29,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:29,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:29,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:29,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:29,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:29,941 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:29,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:29,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:29,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:29,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:29,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:29,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:29,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:29,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:29,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:29,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:29,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:29,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:29,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:29,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:29,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:03:30,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:30,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:30,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:30,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:30,243 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:30,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-13 23:03:30,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97bfbae9/2736fa1f08d84817aecfd480f389e00f/FLAG8e03d346e [2019-10-13 23:03:30,934 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:30,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-13 23:03:30,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97bfbae9/2736fa1f08d84817aecfd480f389e00f/FLAG8e03d346e [2019-10-13 23:03:31,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97bfbae9/2736fa1f08d84817aecfd480f389e00f [2019-10-13 23:03:31,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:31,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:31,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:31,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:31,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:31,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:31" (1/1) ... [2019-10-13 23:03:31,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fe3b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:31, skipping insertion in model container [2019-10-13 23:03:31,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:31" (1/1) ... [2019-10-13 23:03:31,158 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:31,248 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:31,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:32,012 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:32,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:32,276 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:32,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32 WrapperNode [2019-10-13 23:03:32,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:32,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:32,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:32,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:32,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... [2019-10-13 23:03:32,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:32,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:32,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:32,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:32,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:37,184 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:37,184 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:37,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:37 BoogieIcfgContainer [2019-10-13 23:03:37,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:37,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:37,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:37,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:37,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:31" (1/3) ... [2019-10-13 23:03:37,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f42dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:37, skipping insertion in model container [2019-10-13 23:03:37,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:32" (2/3) ... [2019-10-13 23:03:37,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f42dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:37, skipping insertion in model container [2019-10-13 23:03:37,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:37" (3/3) ... [2019-10-13 23:03:37,194 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2019-10-13 23:03:37,204 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:37,212 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:37,224 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:37,253 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:37,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:37,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:37,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:37,254 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:37,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:37,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:37,255 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-10-13 23:03:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:37,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:37,302 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:37,304 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1200228914, now seen corresponding path program 1 times [2019-10-13 23:03:37,321 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:37,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590850086] [2019-10-13 23:03:37,321 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:37,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:37,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:37,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590850086] [2019-10-13 23:03:37,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:37,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:37,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508366953] [2019-10-13 23:03:37,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:37,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:37,986 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 2 states. [2019-10-13 23:03:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:38,053 INFO L93 Difference]: Finished difference Result 493 states and 729 transitions. [2019-10-13 23:03:38,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:38,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-13 23:03:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:38,078 INFO L225 Difference]: With dead ends: 493 [2019-10-13 23:03:38,079 INFO L226 Difference]: Without dead ends: 459 [2019-10-13 23:03:38,083 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-10-13 23:03:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2019-10-13 23:03:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-13 23:03:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 678 transitions. [2019-10-13 23:03:38,199 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 678 transitions. Word has length 97 [2019-10-13 23:03:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:38,202 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 678 transitions. [2019-10-13 23:03:38,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 678 transitions. [2019-10-13 23:03:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 23:03:38,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:38,209 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:38,209 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1372761545, now seen corresponding path program 1 times [2019-10-13 23:03:38,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:38,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153963057] [2019-10-13 23:03:38,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:38,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:38,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:38,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153963057] [2019-10-13 23:03:38,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:38,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:38,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377713638] [2019-10-13 23:03:38,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:38,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:38,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:38,648 INFO L87 Difference]: Start difference. First operand 459 states and 678 transitions. Second operand 9 states. [2019-10-13 23:03:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:44,511 INFO L93 Difference]: Finished difference Result 1238 states and 1874 transitions. [2019-10-13 23:03:44,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:03:44,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-13 23:03:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:44,520 INFO L225 Difference]: With dead ends: 1238 [2019-10-13 23:03:44,520 INFO L226 Difference]: Without dead ends: 832 [2019-10-13 23:03:44,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:03:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2019-10-13 23:03:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 801. [2019-10-13 23:03:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-10-13 23:03:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1172 transitions. [2019-10-13 23:03:44,602 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1172 transitions. Word has length 98 [2019-10-13 23:03:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:44,603 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1172 transitions. [2019-10-13 23:03:44,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1172 transitions. [2019-10-13 23:03:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:03:44,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:44,608 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:44,608 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1341462773, now seen corresponding path program 1 times [2019-10-13 23:03:44,609 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:44,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041317787] [2019-10-13 23:03:44,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:44,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:44,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:44,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041317787] [2019-10-13 23:03:44,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:44,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:03:44,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078781566] [2019-10-13 23:03:44,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:03:44,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:44,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:03:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:44,843 INFO L87 Difference]: Start difference. First operand 801 states and 1172 transitions. Second operand 3 states. [2019-10-13 23:03:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:44,960 INFO L93 Difference]: Finished difference Result 2289 states and 3399 transitions. [2019-10-13 23:03:44,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:03:44,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-13 23:03:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:44,974 INFO L225 Difference]: With dead ends: 2289 [2019-10-13 23:03:44,975 INFO L226 Difference]: Without dead ends: 1543 [2019-10-13 23:03:44,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2019-10-13 23:03:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1536. [2019-10-13 23:03:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2019-10-13 23:03:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2272 transitions. [2019-10-13 23:03:45,092 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2272 transitions. Word has length 100 [2019-10-13 23:03:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:45,093 INFO L462 AbstractCegarLoop]: Abstraction has 1536 states and 2272 transitions. [2019-10-13 23:03:45,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:03:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2272 transitions. [2019-10-13 23:03:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 23:03:45,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:45,103 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:45,104 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1364638279, now seen corresponding path program 1 times [2019-10-13 23:03:45,104 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:45,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422731584] [2019-10-13 23:03:45,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:45,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:45,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422731584] [2019-10-13 23:03:45,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:45,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:45,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329490092] [2019-10-13 23:03:45,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:45,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:45,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:45,530 INFO L87 Difference]: Start difference. First operand 1536 states and 2272 transitions. Second operand 6 states. [2019-10-13 23:03:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:48,798 INFO L93 Difference]: Finished difference Result 4869 states and 7365 transitions. [2019-10-13 23:03:48,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:03:48,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-13 23:03:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:48,829 INFO L225 Difference]: With dead ends: 4869 [2019-10-13 23:03:48,829 INFO L226 Difference]: Without dead ends: 3389 [2019-10-13 23:03:48,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2019-10-13 23:03:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3070. [2019-10-13 23:03:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2019-10-13 23:03:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 4643 transitions. [2019-10-13 23:03:49,061 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 4643 transitions. Word has length 101 [2019-10-13 23:03:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:49,062 INFO L462 AbstractCegarLoop]: Abstraction has 3070 states and 4643 transitions. [2019-10-13 23:03:49,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 4643 transitions. [2019-10-13 23:03:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 23:03:49,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:49,071 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:49,071 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash -744602622, now seen corresponding path program 1 times [2019-10-13 23:03:49,072 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:49,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909743723] [2019-10-13 23:03:49,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:49,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909743723] [2019-10-13 23:03:49,505 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:49,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:03:49,509 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659022236] [2019-10-13 23:03:49,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:03:49,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:49,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:03:49,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:49,513 INFO L87 Difference]: Start difference. First operand 3070 states and 4643 transitions. Second operand 12 states. [2019-10-13 23:03:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:56,810 INFO L93 Difference]: Finished difference Result 9200 states and 13920 transitions. [2019-10-13 23:03:56,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:03:56,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2019-10-13 23:03:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:56,855 INFO L225 Difference]: With dead ends: 9200 [2019-10-13 23:03:56,855 INFO L226 Difference]: Without dead ends: 6185 [2019-10-13 23:03:56,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:03:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2019-10-13 23:03:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6083. [2019-10-13 23:03:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2019-10-13 23:03:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 9110 transitions. [2019-10-13 23:03:57,220 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 9110 transitions. Word has length 139 [2019-10-13 23:03:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:57,223 INFO L462 AbstractCegarLoop]: Abstraction has 6083 states and 9110 transitions. [2019-10-13 23:03:57,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:03:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 9110 transitions. [2019-10-13 23:03:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:57,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:57,229 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:57,229 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1173946682, now seen corresponding path program 1 times [2019-10-13 23:03:57,230 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:57,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101670509] [2019-10-13 23:03:57,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:57,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:57,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:57,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101670509] [2019-10-13 23:03:57,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:57,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:57,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50116034] [2019-10-13 23:03:57,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:57,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:57,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:57,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:57,470 INFO L87 Difference]: Start difference. First operand 6083 states and 9110 transitions. Second operand 9 states. [2019-10-13 23:04:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,172 INFO L93 Difference]: Finished difference Result 15437 states and 23114 transitions. [2019-10-13 23:04:02,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:04:02,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2019-10-13 23:04:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,235 INFO L225 Difference]: With dead ends: 15437 [2019-10-13 23:04:02,235 INFO L226 Difference]: Without dead ends: 9413 [2019-10-13 23:04:02,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:04:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states.