/usr/bin/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_spec2_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:10:02,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:10:02,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:10:02,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:10:02,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:10:02,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:10:02,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:10:02,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:10:02,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:10:02,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:10:02,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:10:02,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:10:02,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:10:02,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:10:02,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:10:02,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:10:02,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:10:02,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:10:02,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:10:02,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:10:02,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:10:02,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:10:02,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:10:02,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:10:02,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:10:02,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:10:02,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:10:02,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:10:02,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:10:02,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:10:02,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:10:02,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:10:02,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:10:02,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:10:02,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:10:02,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:10:02,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:10:02,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:10:02,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:10:02,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:10:02,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:10:02,463 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 [2019-11-07 04:10:02,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:10:02,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:10:02,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:10:02,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:10:02,499 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:10:02,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:10:02,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:10:02,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:10:02,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:10:02,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:10:02,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:10:02,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:10:02,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:10:02,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:10:02,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:10:02,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:10:02,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:02,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:10:02,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:10:02,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:10:02,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:10:02,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:10:02,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:10:02,505 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 [2019-11-07 04:10:02,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:10:02,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:10:02,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:10:02,785 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:10:02,786 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:10:02,786 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-11-07 04:10:02,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ada4242d/a8897dea5eee48138f3923d4eae14520/FLAG89ae20c8c [2019-11-07 04:10:03,398 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:10:03,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-11-07 04:10:03,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ada4242d/a8897dea5eee48138f3923d4eae14520/FLAG89ae20c8c [2019-11-07 04:10:03,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ada4242d/a8897dea5eee48138f3923d4eae14520 [2019-11-07 04:10:03,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:10:03,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:10:03,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:03,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:10:03,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:10:03,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:03" (1/1) ... [2019-11-07 04:10:03,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5910708c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:03, skipping insertion in model container [2019-11-07 04:10:03,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:03" (1/1) ... [2019-11-07 04:10:03,644 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:10:03,731 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:10:04,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:04,435 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:10:04,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:04,665 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:10:04,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04 WrapperNode [2019-11-07 04:10:04,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:04,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:10:04,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:10:04,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:10:04,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (1/1) ... [2019-11-07 04:10:04,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:04,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:04,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:04,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:04,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (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 [2019-11-07 04:10:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:04,957 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:04,957 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:04,960 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:04,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:04,960 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:10:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:10:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:10:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:10:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:10:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:10:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:09,916 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:09,916 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:09,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:09 BoogieIcfgContainer [2019-11-07 04:10:09,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:09,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:09,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:09,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:09,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:03" (1/3) ... [2019-11-07 04:10:09,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24576d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:09, skipping insertion in model container [2019-11-07 04:10:09,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:04" (2/3) ... [2019-11-07 04:10:09,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24576d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:09, skipping insertion in model container [2019-11-07 04:10:09,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:09" (3/3) ... [2019-11-07 04:10:09,927 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2019-11-07 04:10:09,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:09,948 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:09,960 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:10,009 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:10,010 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:10,010 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:10,011 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:10,011 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:10,011 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:10,011 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:10,011 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states. [2019-11-07 04:10:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:10:10,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:10,079 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:10,081 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:10,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:10,087 INFO L82 PathProgramCache]: Analyzing trace with hash -977747574, now seen corresponding path program 1 times [2019-11-07 04:10:10,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:10,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227289275] [2019-11-07 04:10:10,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:10,692 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227289275] [2019-11-07 04:10:10,693 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:10,693 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:10,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896368547] [2019-11-07 04:10:10,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:10,699 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:10,716 INFO L87 Difference]: Start difference. First operand 564 states. Second operand 2 states. [2019-11-07 04:10:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:10,819 INFO L93 Difference]: Finished difference Result 467 states and 697 transitions. [2019-11-07 04:10:10,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:10,822 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-11-07 04:10:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:10,860 INFO L225 Difference]: With dead ends: 467 [2019-11-07 04:10:10,860 INFO L226 Difference]: Without dead ends: 433 [2019-11-07 04:10:10,865 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-11-07 04:10:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-11-07 04:10:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-11-07 04:10:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 646 transitions. [2019-11-07 04:10:10,963 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 646 transitions. Word has length 112 [2019-11-07 04:10:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:10,965 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 646 transitions. [2019-11-07 04:10:10,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 646 transitions. [2019-11-07 04:10:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:10:10,971 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:10,972 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:10,972 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1340082542, now seen corresponding path program 1 times [2019-11-07 04:10:10,973 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:10,973 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777834928] [2019-11-07 04:10:10,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:11,288 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777834928] [2019-11-07 04:10:11,288 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:11,288 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:11,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943647289] [2019-11-07 04:10:11,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:11,291 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:11,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:11,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:11,291 INFO L87 Difference]: Start difference. First operand 433 states and 646 transitions. Second operand 7 states. [2019-11-07 04:10:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:15,399 INFO L93 Difference]: Finished difference Result 1226 states and 1875 transitions. [2019-11-07 04:10:15,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:10:15,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:10:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:15,411 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 04:10:15,411 INFO L226 Difference]: Without dead ends: 835 [2019-11-07 04:10:15,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:10:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2019-11-07 04:10:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 810. [2019-11-07 04:10:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-11-07 04:10:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1235 transitions. [2019-11-07 04:10:15,508 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1235 transitions. Word has length 113 [2019-11-07 04:10:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:15,509 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1235 transitions. [2019-11-07 04:10:15,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1235 transitions. [2019-11-07 04:10:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:10:15,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:15,514 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:15,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1965967932, now seen corresponding path program 1 times [2019-11-07 04:10:15,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:15,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850694558] [2019-11-07 04:10:15,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:15,834 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850694558] [2019-11-07 04:10:15,835 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:15,835 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:15,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363616131] [2019-11-07 04:10:15,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:15,837 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:15,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:15,838 INFO L87 Difference]: Start difference. First operand 810 states and 1235 transitions. Second operand 4 states. [2019-11-07 04:10:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:17,569 INFO L93 Difference]: Finished difference Result 2424 states and 3790 transitions. [2019-11-07 04:10:17,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:17,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-11-07 04:10:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:17,585 INFO L225 Difference]: With dead ends: 2424 [2019-11-07 04:10:17,586 INFO L226 Difference]: Without dead ends: 1656 [2019-11-07 04:10:17,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2019-11-07 04:10:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1558. [2019-11-07 04:10:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-11-07 04:10:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2421 transitions. [2019-11-07 04:10:17,705 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2421 transitions. Word has length 117 [2019-11-07 04:10:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:17,705 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2421 transitions. [2019-11-07 04:10:17,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2421 transitions. [2019-11-07 04:10:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:10:17,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:17,710 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:17,710 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:17,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:17,710 INFO L82 PathProgramCache]: Analyzing trace with hash -816771845, now seen corresponding path program 1 times [2019-11-07 04:10:17,711 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:17,711 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521766412] [2019-11-07 04:10:17,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:17,871 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521766412] [2019-11-07 04:10:17,872 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:17,872 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:17,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335148582] [2019-11-07 04:10:17,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:17,873 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:17,874 INFO L87 Difference]: Start difference. First operand 1558 states and 2421 transitions. Second operand 4 states. [2019-11-07 04:10:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:19,714 INFO L93 Difference]: Finished difference Result 4615 states and 7330 transitions. [2019-11-07 04:10:19,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:19,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-07 04:10:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:19,747 INFO L225 Difference]: With dead ends: 4615 [2019-11-07 04:10:19,748 INFO L226 Difference]: Without dead ends: 3100 [2019-11-07 04:10:19,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2019-11-07 04:10:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2979. [2019-11-07 04:10:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2019-11-07 04:10:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4694 transitions. [2019-11-07 04:10:19,953 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4694 transitions. Word has length 118 [2019-11-07 04:10:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:19,956 INFO L462 AbstractCegarLoop]: Abstraction has 2979 states and 4694 transitions. [2019-11-07 04:10:19,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4694 transitions. [2019-11-07 04:10:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:10:19,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:19,961 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:19,962 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:19,962 INFO L82 PathProgramCache]: Analyzing trace with hash 448572390, now seen corresponding path program 1 times [2019-11-07 04:10:19,962 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:19,963 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187431952] [2019-11-07 04:10:19,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:20,133 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187431952] [2019-11-07 04:10:20,133 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:20,133 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:20,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535930205] [2019-11-07 04:10:20,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:20,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:20,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:20,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:20,135 INFO L87 Difference]: Start difference. First operand 2979 states and 4694 transitions. Second operand 4 states. [2019-11-07 04:10:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:22,516 INFO L93 Difference]: Finished difference Result 8930 states and 14486 transitions. [2019-11-07 04:10:22,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:22,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:10:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:22,582 INFO L225 Difference]: With dead ends: 8930 [2019-11-07 04:10:22,583 INFO L226 Difference]: Without dead ends: 5996 [2019-11-07 04:10:22,606 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2019-11-07 04:10:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5830. [2019-11-07 04:10:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5830 states. [2019-11-07 04:10:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 9356 transitions. [2019-11-07 04:10:22,976 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 9356 transitions. Word has length 119 [2019-11-07 04:10:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:22,977 INFO L462 AbstractCegarLoop]: Abstraction has 5830 states and 9356 transitions. [2019-11-07 04:10:22,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 9356 transitions. [2019-11-07 04:10:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:10:22,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:22,981 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:22,982 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:22,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1019541917, now seen corresponding path program 1 times [2019-11-07 04:10:22,984 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:22,984 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616023227] [2019-11-07 04:10:22,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:23,148 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616023227] [2019-11-07 04:10:23,149 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:23,149 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:23,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849105351] [2019-11-07 04:10:23,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:23,150 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:23,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:23,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:23,150 INFO L87 Difference]: Start difference. First operand 5830 states and 9356 transitions. Second operand 4 states. [2019-11-07 04:10:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:25,229 INFO L93 Difference]: Finished difference Result 17585 states and 29529 transitions. [2019-11-07 04:10:25,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:25,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:10:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:25,355 INFO L225 Difference]: With dead ends: 17585 [2019-11-07 04:10:25,356 INFO L226 Difference]: Without dead ends: 11804 [2019-11-07 04:10:25,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2019-11-07 04:10:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 11549. [2019-11-07 04:10:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11549 states. [2019-11-07 04:10:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 19090 transitions. [2019-11-07 04:10:26,281 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 19090 transitions. Word has length 120 [2019-11-07 04:10:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:26,282 INFO L462 AbstractCegarLoop]: Abstraction has 11549 states and 19090 transitions. [2019-11-07 04:10:26,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 19090 transitions. [2019-11-07 04:10:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:10:26,285 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:26,286 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:10:26,286 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1539731976, now seen corresponding path program 1 times [2019-11-07 04:10:26,286 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:26,287 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137451611] [2019-11-07 04:10:26,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:26,450 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137451611] [2019-11-07 04:10:26,451 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:26,451 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:26,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32171895] [2019-11-07 04:10:26,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:26,452 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:26,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:26,453 INFO L87 Difference]: Start difference. First operand 11549 states and 19090 transitions. Second operand 4 states. [2019-11-07 04:10:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:29,593 INFO L93 Difference]: Finished difference Result 34972 states and 62257 transitions. [2019-11-07 04:10:29,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:29,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:10:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:29,770 INFO L225 Difference]: With dead ends: 34972 [2019-11-07 04:10:29,771 INFO L226 Difference]: Without dead ends: 23468 [2019-11-07 04:10:29,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2019-11-07 04:10:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 22886. [2019-11-07 04:10:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states. [2019-11-07 04:10:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22886 states to 22886 states and 39461 transitions. [2019-11-07 04:10:31,365 INFO L78 Accepts]: Start accepts. Automaton has 22886 states and 39461 transitions. Word has length 121 [2019-11-07 04:10:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:31,368 INFO L462 AbstractCegarLoop]: Abstraction has 22886 states and 39461 transitions. [2019-11-07 04:10:31,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22886 states and 39461 transitions. [2019-11-07 04:10:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 04:10:31,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:31,376 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-11-07 04:10:31,376 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1356193321, now seen corresponding path program 1 times [2019-11-07 04:10:31,377 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:31,377 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216951163] [2019-11-07 04:10:31,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 04:10:31,555 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216951163] [2019-11-07 04:10:31,555 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:31,555 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:10:31,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109271587] [2019-11-07 04:10:31,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:10:31,556 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:10:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:31,557 INFO L87 Difference]: Start difference. First operand 22886 states and 39461 transitions. Second operand 5 states. [2019-11-07 04:10:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:32,456 INFO L93 Difference]: Finished difference Result 46151 states and 82613 transitions. [2019-11-07 04:10:32,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:32,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-11-07 04:10:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:32,590 INFO L225 Difference]: With dead ends: 46151 [2019-11-07 04:10:32,590 INFO L226 Difference]: Without dead ends: 23308 [2019-11-07 04:10:32,651 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23308 states.