java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:27,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:27,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:27,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:27,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:27,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:27,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:27,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:27,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:27,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:27,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:27,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:27,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:27,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:27,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:27,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:27,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:27,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:27,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:27,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:27,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:27,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:27,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:27,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:27,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:27,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:27,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:27,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:27,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:27,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:27,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:27,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:27,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:27,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:27,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:27,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:27,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:27,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:27,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:27,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:27,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:27,695 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 23:02:27,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:27,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:27,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:27,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:27,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:27,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:27,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:27,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:27,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:27,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:27,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:27,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:27,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:27,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:27,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:27,723 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:27,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:27,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:27,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:27,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:27,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:27,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:27,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:27,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:27,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:27,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:27,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:27,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:27,725 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 23:02:28,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:28,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:28,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:28,027 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:28,027 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:28,028 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_productSimulator.cil.c [2019-10-13 23:02:28,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d194a9406/fb3e81384f9f4f009cde517f0bd1882d/FLAG98dc81de5 [2019-10-13 23:02:28,807 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:28,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_productSimulator.cil.c [2019-10-13 23:02:28,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d194a9406/fb3e81384f9f4f009cde517f0bd1882d/FLAG98dc81de5 [2019-10-13 23:02:28,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d194a9406/fb3e81384f9f4f009cde517f0bd1882d [2019-10-13 23:02:28,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:28,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:28,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:28,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:28,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:28,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:28" (1/1) ... [2019-10-13 23:02:29,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f632913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:28, skipping insertion in model container [2019-10-13 23:02:29,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:28" (1/1) ... [2019-10-13 23:02:29,009 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:29,097 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:29,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:29,914 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:30,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:30,174 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:30,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30 WrapperNode [2019-10-13 23:02:30,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:30,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:30,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:30,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:30,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:30,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:30,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 23:02:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 23:02:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:02:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:02:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:02:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:02:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:02:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:02:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:02:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:02:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 23:02:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 23:02:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 23:02:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 23:02:30,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:30,497 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:30,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:30,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:30,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:30,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 23:02:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 23:02:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 23:02:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 23:02:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 23:02:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 23:02:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:35,875 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:35,875 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:35,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35 BoogieIcfgContainer [2019-10-13 23:02:35,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:35,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:35,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:35,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:35,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:28" (1/3) ... [2019-10-13 23:02:35,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cdf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (2/3) ... [2019-10-13 23:02:35,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cdf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35" (3/3) ... [2019-10-13 23:02:35,886 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_productSimulator.cil.c [2019-10-13 23:02:35,897 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:35,907 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:35,920 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:35,956 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:35,956 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:35,956 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:35,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:35,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:35,957 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:35,957 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:35,957 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states. [2019-10-13 23:02:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 23:02:36,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:36,013 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:36,015 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1399259546, now seen corresponding path program 1 times [2019-10-13 23:02:36,033 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:36,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190727029] [2019-10-13 23:02:36,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:36,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190727029] [2019-10-13 23:02:36,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:36,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:02:36,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646202465] [2019-10-13 23:02:36,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:02:36,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:02:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:36,733 INFO L87 Difference]: Start difference. First operand 675 states. Second operand 6 states. [2019-10-13 23:02:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,996 INFO L93 Difference]: Finished difference Result 1076 states and 1560 transitions. [2019-10-13 23:02:36,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:36,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-13 23:02:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,039 INFO L225 Difference]: With dead ends: 1076 [2019-10-13 23:02:37,039 INFO L226 Difference]: Without dead ends: 541 [2019-10-13 23:02:37,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-13 23:02:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2019-10-13 23:02:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-10-13 23:02:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 774 transitions. [2019-10-13 23:02:37,203 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 774 transitions. Word has length 98 [2019-10-13 23:02:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,206 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 774 transitions. [2019-10-13 23:02:37,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:02:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 774 transitions. [2019-10-13 23:02:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 23:02:37,220 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,221 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:37,221 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 328067681, now seen corresponding path program 1 times [2019-10-13 23:02:37,222 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37784246] [2019-10-13 23:02:37,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:37,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37784246] [2019-10-13 23:02:37,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:37,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:02:37,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650571160] [2019-10-13 23:02:37,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:02:37,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:02:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:37,591 INFO L87 Difference]: Start difference. First operand 541 states and 774 transitions. Second operand 3 states. [2019-10-13 23:02:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:37,748 INFO L93 Difference]: Finished difference Result 1529 states and 2220 transitions. [2019-10-13 23:02:37,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:02:37,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-13 23:02:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,758 INFO L225 Difference]: With dead ends: 1529 [2019-10-13 23:02:37,758 INFO L226 Difference]: Without dead ends: 1035 [2019-10-13 23:02:37,762 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 23:02:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2019-10-13 23:02:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1032. [2019-10-13 23:02:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-10-13 23:02:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1491 transitions. [2019-10-13 23:02:37,846 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1491 transitions. Word has length 99 [2019-10-13 23:02:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,847 INFO L462 AbstractCegarLoop]: Abstraction has 1032 states and 1491 transitions. [2019-10-13 23:02:37,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:02:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1491 transitions. [2019-10-13 23:02:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:02:37,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,867 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:37,867 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash 139701888, now seen corresponding path program 1 times [2019-10-13 23:02:37,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249451966] [2019-10-13 23:02:37,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:38,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249451966] [2019-10-13 23:02:38,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:38,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:38,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883374612] [2019-10-13 23:02:38,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:38,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:38,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:38,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:38,210 INFO L87 Difference]: Start difference. First operand 1032 states and 1491 transitions. Second operand 5 states. [2019-10-13 23:02:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,793 INFO L93 Difference]: Finished difference Result 3193 states and 4806 transitions. [2019-10-13 23:02:41,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:41,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 23:02:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,830 INFO L225 Difference]: With dead ends: 3193 [2019-10-13 23:02:41,830 INFO L226 Difference]: Without dead ends: 2230 [2019-10-13 23:02:41,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2019-10-13 23:02:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2147. [2019-10-13 23:02:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2019-10-13 23:02:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3269 transitions. [2019-10-13 23:02:42,037 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3269 transitions. Word has length 100 [2019-10-13 23:02:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:42,040 INFO L462 AbstractCegarLoop]: Abstraction has 2147 states and 3269 transitions. [2019-10-13 23:02:42,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:42,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3269 transitions. [2019-10-13 23:02:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:02:42,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:42,060 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:42,060 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1990728852, now seen corresponding path program 1 times [2019-10-13 23:02:42,061 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:42,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643762902] [2019-10-13 23:02:42,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:42,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643762902] [2019-10-13 23:02:42,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:42,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:02:42,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229618006] [2019-10-13 23:02:42,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:42,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:42,389 INFO L87 Difference]: Start difference. First operand 2147 states and 3269 transitions. Second operand 9 states. [2019-10-13 23:02:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:44,467 INFO L93 Difference]: Finished difference Result 4212 states and 6512 transitions. [2019-10-13 23:02:44,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:44,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-10-13 23:02:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:44,488 INFO L225 Difference]: With dead ends: 4212 [2019-10-13 23:02:44,488 INFO L226 Difference]: Without dead ends: 2133 [2019-10-13 23:02:44,502 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2019-10-13 23:02:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2019-10-13 23:02:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2019-10-13 23:02:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3238 transitions. [2019-10-13 23:02:44,619 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3238 transitions. Word has length 141 [2019-10-13 23:02:44,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:44,620 INFO L462 AbstractCegarLoop]: Abstraction has 2133 states and 3238 transitions. [2019-10-13 23:02:44,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3238 transitions. [2019-10-13 23:02:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:44,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:44,630 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:44,631 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1326036094, now seen corresponding path program 1 times [2019-10-13 23:02:44,632 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:44,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087035431] [2019-10-13 23:02:44,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 23:02:44,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087035431] [2019-10-13 23:02:44,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:44,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:02:44,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898719363] [2019-10-13 23:02:44,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:02:44,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:02:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:44,893 INFO L87 Difference]: Start difference. First operand 2133 states and 3238 transitions. Second operand 3 states. [2019-10-13 23:02:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:45,156 INFO L93 Difference]: Finished difference Result 3159 states and 4788 transitions. [2019-10-13 23:02:45,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:02:45,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-13 23:02:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:45,176 INFO L225 Difference]: With dead ends: 3159 [2019-10-13 23:02:45,177 INFO L226 Difference]: Without dead ends: 2136 [2019-10-13 23:02:45,184 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 23:02:45,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2019-10-13 23:02:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2133. [2019-10-13 23:02:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2019-10-13 23:02:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3212 transitions. [2019-10-13 23:02:45,314 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3212 transitions. Word has length 150 [2019-10-13 23:02:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:45,316 INFO L462 AbstractCegarLoop]: Abstraction has 2133 states and 3212 transitions. [2019-10-13 23:02:45,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:02:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3212 transitions. [2019-10-13 23:02:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:02:45,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:45,328 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:45,328 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash 651226403, now seen corresponding path program 1 times [2019-10-13 23:02:45,329 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:45,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151929881] [2019-10-13 23:02:45,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 23:02:45,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151929881] [2019-10-13 23:02:45,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:45,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:45,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402421419] [2019-10-13 23:02:45,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:45,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:45,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:45,561 INFO L87 Difference]: Start difference. First operand 2133 states and 3212 transitions. Second operand 7 states. [2019-10-13 23:02:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:50,179 INFO L93 Difference]: Finished difference Result 6411 states and 9768 transitions. [2019-10-13 23:02:50,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:50,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2019-10-13 23:02:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:50,212 INFO L225 Difference]: With dead ends: 6411 [2019-10-13 23:02:50,212 INFO L226 Difference]: Without dead ends: 4350 [2019-10-13 23:02:50,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2019-10-13 23:02:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 4215. [2019-10-13 23:02:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2019-10-13 23:02:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6398 transitions. [2019-10-13 23:02:50,455 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6398 transitions. Word has length 149 [2019-10-13 23:02:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:50,457 INFO L462 AbstractCegarLoop]: Abstraction has 4215 states and 6398 transitions. [2019-10-13 23:02:50,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6398 transitions. [2019-10-13 23:02:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 23:02:50,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:50,466 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:50,466 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash 497081962, now seen corresponding path program 1 times [2019-10-13 23:02:50,467 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:50,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457620955] [2019-10-13 23:02:50,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:50,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:50,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 23:02:50,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457620955] [2019-10-13 23:02:50,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:50,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:02:50,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699452785] [2019-10-13 23:02:50,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:50,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:50,780 INFO L87 Difference]: Start difference. First operand 4215 states and 6398 transitions. Second operand 9 states. [2019-10-13 23:02:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:55,346 INFO L93 Difference]: Finished difference Result 5334 states and 8030 transitions. [2019-10-13 23:02:55,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:02:55,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2019-10-13 23:02:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:55,385 INFO L225 Difference]: With dead ends: 5334 [2019-10-13 23:02:55,386 INFO L226 Difference]: Without dead ends: 5331 [2019-10-13 23:02:55,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:02:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2019-10-13 23:02:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 5155. [2019-10-13 23:02:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5155 states. [2019-10-13 23:02:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 7738 transitions. [2019-10-13 23:02:55,716 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 7738 transitions. Word has length 153 [2019-10-13 23:02:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:55,718 INFO L462 AbstractCegarLoop]: Abstraction has 5155 states and 7738 transitions. [2019-10-13 23:02:55,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 7738 transitions. [2019-10-13 23:02:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:02:55,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:55,737 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:55,737 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:55,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1972809671, now seen corresponding path program 1 times [2019-10-13 23:02:55,738 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:55,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335578172] [2019-10-13 23:02:55,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:55,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:55,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-13 23:02:55,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335578172] [2019-10-13 23:02:55,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:55,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:55,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204932504] [2019-10-13 23:02:55,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:55,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:55,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:55,960 INFO L87 Difference]: Start difference. First operand 5155 states and 7738 transitions. Second operand 7 states. [2019-10-13 23:02:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:56,257 INFO L93 Difference]: Finished difference Result 10322 states and 15614 transitions. [2019-10-13 23:02:56,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:56,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2019-10-13 23:02:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:56,300 INFO L225 Difference]: With dead ends: 10322 [2019-10-13 23:02:56,300 INFO L226 Difference]: Without dead ends: 5239 [2019-10-13 23:02:56,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2019-10-13 23:02:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5239. [2019-10-13 23:02:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2019-10-13 23:02:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7822 transitions. [2019-10-13 23:02:56,754 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7822 transitions. Word has length 183 [2019-10-13 23:02:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:56,755 INFO L462 AbstractCegarLoop]: Abstraction has 5239 states and 7822 transitions. [2019-10-13 23:02:56,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7822 transitions. [2019-10-13 23:02:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 23:02:56,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:56,771 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:56,772 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:56,772 INFO L82 PathProgramCache]: Analyzing trace with hash -807701877, now seen corresponding path program 1 times [2019-10-13 23:02:56,772 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:56,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788409995] [2019-10-13 23:02:56,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:56,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:56,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-13 23:02:57,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788409995] [2019-10-13 23:02:57,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756453279] [2019-10-13 23:02:57,130 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 23:02:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:57,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-13 23:02:57,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-13 23:02:58,128 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:58,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-13 23:02:59,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:59,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9] total 24 [2019-10-13 23:02:59,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44242706] [2019-10-13 23:02:59,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:02:59,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:59,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:02:59,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:02:59,073 INFO L87 Difference]: Start difference. First operand 5239 states and 7822 transitions. Second operand 10 states.