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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:54,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:54,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:54,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:54,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:54,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:54,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:54,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:54,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:54,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:54,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:54,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:54,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:54,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:54,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:54,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:54,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:54,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:54,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:54,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:54,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:54,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:54,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:54,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:54,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:54,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:54,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:54,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:54,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:54,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:54,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:54,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:54,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:54,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:54,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:54,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:54,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:54,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:54,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:54,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:54,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:54,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:54,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:54,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:54,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:54,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:54,479 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:54,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:54,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:54,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:54,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:54,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:54,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:54,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:54,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:54,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:54,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:54,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:54,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:54,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:54,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:54,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:54,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:54,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:54,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:54,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:54,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:54,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:54,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:54,767 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:54,767 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:54,768 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-13 23:04:54,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be36da821/5299838d5bdb4c93b7f017ef0c706ae3/FLAGb4fda0232 [2019-10-13 23:04:55,462 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:55,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-13 23:04:55,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be36da821/5299838d5bdb4c93b7f017ef0c706ae3/FLAGb4fda0232 [2019-10-13 23:04:55,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be36da821/5299838d5bdb4c93b7f017ef0c706ae3 [2019-10-13 23:04:55,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:55,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:55,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:55,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:55,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:55,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:55" (1/1) ... [2019-10-13 23:04:55,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:55, skipping insertion in model container [2019-10-13 23:04:55,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:55" (1/1) ... [2019-10-13 23:04:55,660 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:55,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:56,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:56,438 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:56,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:56,627 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:56,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56 WrapperNode [2019-10-13 23:04:56,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:56,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:56,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:56,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:56,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... [2019-10-13 23:04:56,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:56,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:56,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:56,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:56,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:56,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:56,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:56,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:56,908 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:56,908 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:56,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:56,910 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:56,910 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:56,910 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:56,911 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:56,911 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:56,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:56,912 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:56,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:56,913 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:56,913 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:56,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:56,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:56,932 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:01,646 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:01,647 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:01,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:01 BoogieIcfgContainer [2019-10-13 23:05:01,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:01,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:01,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:01,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:01,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:55" (1/3) ... [2019-10-13 23:05:01,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:01, skipping insertion in model container [2019-10-13 23:05:01,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:56" (2/3) ... [2019-10-13 23:05:01,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:01, skipping insertion in model container [2019-10-13 23:05:01,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:01" (3/3) ... [2019-10-13 23:05:01,656 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2019-10-13 23:05:01,665 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:01,674 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:01,685 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:01,716 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:01,716 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:01,717 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:01,717 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:01,717 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:01,717 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:01,717 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:01,717 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states. [2019-10-13 23:05:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:01,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:01,766 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:01,768 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:01,775 INFO L82 PathProgramCache]: Analyzing trace with hash -928932607, now seen corresponding path program 1 times [2019-10-13 23:05:01,784 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:01,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892276130] [2019-10-13 23:05:01,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:02,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892276130] [2019-10-13 23:05:02,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978124925] [2019-10-13 23:05:02,515 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 [2019-10-13 23:05:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:03,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:03,264 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:03,447 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 23:05:03,448 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:03,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-13 23:05:03,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731934957] [2019-10-13 23:05:03,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:03,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:03,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:03,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:03,474 INFO L87 Difference]: Start difference. First operand 600 states. Second operand 4 states. [2019-10-13 23:05:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:04,748 INFO L93 Difference]: Finished difference Result 1716 states and 2631 transitions. [2019-10-13 23:05:04,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:04,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:05:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:04,779 INFO L225 Difference]: With dead ends: 1716 [2019-10-13 23:05:04,779 INFO L226 Difference]: Without dead ends: 1238 [2019-10-13 23:05:04,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2019-10-13 23:05:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1197. [2019-10-13 23:05:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-13 23:05:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1811 transitions. [2019-10-13 23:05:04,995 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1811 transitions. Word has length 119 [2019-10-13 23:05:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:04,996 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1811 transitions. [2019-10-13 23:05:04,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1811 transitions. [2019-10-13 23:05:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:05,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:05,007 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:05,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:05,215 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash 512852373, now seen corresponding path program 1 times [2019-10-13 23:05:05,216 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:05,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799154495] [2019-10-13 23:05:05,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:05,546 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 23:05:05,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799154495] [2019-10-13 23:05:05,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:05,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:05,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594524930] [2019-10-13 23:05:05,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:05,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:05,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:05,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:05,555 INFO L87 Difference]: Start difference. First operand 1197 states and 1811 transitions. Second operand 7 states. [2019-10-13 23:05:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:08,174 INFO L93 Difference]: Finished difference Result 4586 states and 7122 transitions. [2019-10-13 23:05:08,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:08,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 23:05:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:08,217 INFO L225 Difference]: With dead ends: 4586 [2019-10-13 23:05:08,217 INFO L226 Difference]: Without dead ends: 3420 [2019-10-13 23:05:08,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2019-10-13 23:05:08,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3318. [2019-10-13 23:05:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3318 states. [2019-10-13 23:05:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 5136 transitions. [2019-10-13 23:05:08,515 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 5136 transitions. Word has length 119 [2019-10-13 23:05:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:08,516 INFO L462 AbstractCegarLoop]: Abstraction has 3318 states and 5136 transitions. [2019-10-13 23:05:08,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 5136 transitions. [2019-10-13 23:05:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:08,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:08,531 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:08,531 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,532 INFO L82 PathProgramCache]: Analyzing trace with hash 169021684, now seen corresponding path program 1 times [2019-10-13 23:05:08,532 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490938563] [2019-10-13 23:05:08,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:08,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490938563] [2019-10-13 23:05:08,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810117738] [2019-10-13 23:05:08,944 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 [2019-10-13 23:05:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:09,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:09,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:09,603 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:09,752 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 23:05:09,752 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:09,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-13 23:05:09,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367871954] [2019-10-13 23:05:09,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:09,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:09,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:09,754 INFO L87 Difference]: Start difference. First operand 3318 states and 5136 transitions. Second operand 4 states. [2019-10-13 23:05:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:09,954 INFO L93 Difference]: Finished difference Result 6498 states and 10154 transitions. [2019-10-13 23:05:09,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:09,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:05:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:09,981 INFO L225 Difference]: With dead ends: 6498 [2019-10-13 23:05:09,981 INFO L226 Difference]: Without dead ends: 3211 [2019-10-13 23:05:10,003 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2019-10-13 23:05:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3149. [2019-10-13 23:05:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2019-10-13 23:05:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4845 transitions. [2019-10-13 23:05:10,193 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4845 transitions. Word has length 121 [2019-10-13 23:05:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:10,194 INFO L462 AbstractCegarLoop]: Abstraction has 3149 states and 4845 transitions. [2019-10-13 23:05:10,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4845 transitions. [2019-10-13 23:05:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:10,199 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:10,199 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:10,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:10,409 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1445388631, now seen corresponding path program 1 times [2019-10-13 23:05:10,410 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:10,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148606970] [2019-10-13 23:05:10,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:10,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148606970] [2019-10-13 23:05:10,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943201796] [2019-10-13 23:05:10,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:11,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:11,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:11,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:11,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:11,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:11,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:05:11,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543618615] [2019-10-13 23:05:11,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:11,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:11,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:11,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:11,755 INFO L87 Difference]: Start difference. First operand 3149 states and 4845 transitions. Second operand 6 states. [2019-10-13 23:05:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:13,046 INFO L93 Difference]: Finished difference Result 8354 states and 13078 transitions. [2019-10-13 23:05:13,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:13,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 23:05:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:13,089 INFO L225 Difference]: With dead ends: 8354 [2019-10-13 23:05:13,089 INFO L226 Difference]: Without dead ends: 5236 [2019-10-13 23:05:13,112 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2019-10-13 23:05:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5199. [2019-10-13 23:05:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2019-10-13 23:05:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7883 transitions. [2019-10-13 23:05:13,444 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7883 transitions. Word has length 120 [2019-10-13 23:05:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:13,446 INFO L462 AbstractCegarLoop]: Abstraction has 5199 states and 7883 transitions. [2019-10-13 23:05:13,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7883 transitions. [2019-10-13 23:05:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:13,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:13,451 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:13,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:13,659 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 324873346, now seen corresponding path program 1 times [2019-10-13 23:05:13,659 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:13,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787567289] [2019-10-13 23:05:13,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:13,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:13,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:13,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787567289] [2019-10-13 23:05:13,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394266293] [2019-10-13 23:05:13,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:14,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:14,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:14,478 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:14,589 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 23:05:14,589 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:14,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:14,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700925015] [2019-10-13 23:05:14,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:14,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:14,593 INFO L87 Difference]: Start difference. First operand 5199 states and 7883 transitions. Second operand 3 states. [2019-10-13 23:05:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:14,836 INFO L93 Difference]: Finished difference Result 11619 states and 17754 transitions. [2019-10-13 23:05:14,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:14,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:14,888 INFO L225 Difference]: With dead ends: 11619 [2019-10-13 23:05:14,888 INFO L226 Difference]: Without dead ends: 6451 [2019-10-13 23:05:14,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2019-10-13 23:05:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5121. [2019-10-13 23:05:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5121 states. [2019-10-13 23:05:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 7733 transitions. [2019-10-13 23:05:15,327 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 7733 transitions. Word has length 119 [2019-10-13 23:05:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:15,330 INFO L462 AbstractCegarLoop]: Abstraction has 5121 states and 7733 transitions. [2019-10-13 23:05:15,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 7733 transitions. [2019-10-13 23:05:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:05:15,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:15,335 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:15,545 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:15,545 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1195362687, now seen corresponding path program 1 times [2019-10-13 23:05:15,547 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:15,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074967781] [2019-10-13 23:05:15,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:15,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:15,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:15,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074967781] [2019-10-13 23:05:15,789 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:15,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:15,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416205321] [2019-10-13 23:05:15,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:15,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:15,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:15,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:15,792 INFO L87 Difference]: Start difference. First operand 5121 states and 7733 transitions. Second operand 10 states. [2019-10-13 23:05:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:18,850 INFO L93 Difference]: Finished difference Result 18270 states and 28333 transitions. [2019-10-13 23:05:18,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:18,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-13 23:05:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:18,958 INFO L225 Difference]: With dead ends: 18270 [2019-10-13 23:05:18,959 INFO L226 Difference]: Without dead ends: 13180 [2019-10-13 23:05:18,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2019-10-13 23:05:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 12852. [2019-10-13 23:05:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12852 states. [2019-10-13 23:05:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12852 states to 12852 states and 19791 transitions. [2019-10-13 23:05:19,531 INFO L78 Accepts]: Start accepts. Automaton has 12852 states and 19791 transitions. Word has length 125 [2019-10-13 23:05:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:19,531 INFO L462 AbstractCegarLoop]: Abstraction has 12852 states and 19791 transitions. [2019-10-13 23:05:19,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12852 states and 19791 transitions. [2019-10-13 23:05:19,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:05:19,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:19,535 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:19,535 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1826143901, now seen corresponding path program 1 times [2019-10-13 23:05:19,536 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:19,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989060127] [2019-10-13 23:05:19,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:19,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:19,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:19,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989060127] [2019-10-13 23:05:19,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542246750] [2019-10-13 23:05:19,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:21,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:05:21,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:05:21,304 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:21,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:21,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-13 23:05:21,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368532349] [2019-10-13 23:05:21,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:21,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:21,592 INFO L87 Difference]: Start difference. First operand 12852 states and 19791 transitions. Second operand 7 states. [2019-10-13 23:05:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:23,989 INFO L93 Difference]: Finished difference Result 26966 states and 41514 transitions. [2019-10-13 23:05:23,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:05:23,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:05:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:24,063 INFO L225 Difference]: With dead ends: 26966 [2019-10-13 23:05:24,063 INFO L226 Difference]: Without dead ends: 14145 [2019-10-13 23:05:24,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14145 states. [2019-10-13 23:05:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14145 to 14098. [2019-10-13 23:05:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14098 states. [2019-10-13 23:05:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14098 states to 14098 states and 21474 transitions. [2019-10-13 23:05:24,677 INFO L78 Accepts]: Start accepts. Automaton has 14098 states and 21474 transitions. Word has length 131 [2019-10-13 23:05:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:24,678 INFO L462 AbstractCegarLoop]: Abstraction has 14098 states and 21474 transitions. [2019-10-13 23:05:24,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 14098 states and 21474 transitions. [2019-10-13 23:05:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:05:24,683 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:24,683 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:24,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:24,891 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1817781731, now seen corresponding path program 1 times [2019-10-13 23:05:24,892 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:24,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92513713] [2019-10-13 23:05:24,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:24,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:24,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:25,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92513713] [2019-10-13 23:05:25,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:25,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:25,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806878042] [2019-10-13 23:05:25,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:25,087 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:25,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:25,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:25,087 INFO L87 Difference]: Start difference. First operand 14098 states and 21474 transitions. Second operand 10 states. [2019-10-13 23:05:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:25,531 INFO L93 Difference]: Finished difference Result 26172 states and 40079 transitions. [2019-10-13 23:05:25,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:05:25,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-10-13 23:05:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:25,596 INFO L225 Difference]: With dead ends: 26172 [2019-10-13 23:05:25,597 INFO L226 Difference]: Without dead ends: 14342 [2019-10-13 23:05:25,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14342 states.