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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:53,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:53,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:53,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:53,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:53,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:53,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:53,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:53,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:53,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:53,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:53,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:53,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:53,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:53,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:53,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:53,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:53,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:53,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:53,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:53,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:53,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:53,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:53,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:53,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:53,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:53,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:53,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:53,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:53,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:53,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:53,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:53,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:53,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:53,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:53,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:53,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:53,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:53,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:53,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:53,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:53,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:07:53,130 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:53,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:53,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:53,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:53,133 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:53,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:53,133 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:53,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:53,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:53,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:53,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:53,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:53,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:53,135 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:53,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:53,135 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:53,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:53,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:53,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:53,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:53,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:53,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:53,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:53,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:53,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:53,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:53,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:53,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:53,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:07:53,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:53,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:53,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:53,508 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:53,509 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:53,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-15 03:07:53,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae90a2e4/84e3d9bffc9d40f59fa2db46a866879d/FLAG2845a050e [2019-10-15 03:07:54,394 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:54,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-15 03:07:54,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae90a2e4/84e3d9bffc9d40f59fa2db46a866879d/FLAG2845a050e [2019-10-15 03:07:54,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae90a2e4/84e3d9bffc9d40f59fa2db46a866879d [2019-10-15 03:07:54,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:54,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:54,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:54,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:54,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:54,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d93e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:54, skipping insertion in model container [2019-10-15 03:07:54,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:54" (1/1) ... [2019-10-15 03:07:54,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:54,666 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:55,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:55,452 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:55,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:55,732 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:55,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55 WrapperNode [2019-10-15 03:07:55,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:55,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:55,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:55,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:55,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:55,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:55,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:55,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:55,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:02,420 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:02,420 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:02,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:02 BoogieIcfgContainer [2019-10-15 03:08:02,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:02,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:02,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:02,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:02,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:54" (1/3) ... [2019-10-15 03:08:02,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0a91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:02, skipping insertion in model container [2019-10-15 03:08:02,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55" (2/3) ... [2019-10-15 03:08:02,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0a91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:02, skipping insertion in model container [2019-10-15 03:08:02,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:02" (3/3) ... [2019-10-15 03:08:02,430 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2019-10-15 03:08:02,442 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:02,452 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:02,464 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:02,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:02,504 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:02,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:02,504 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:02,505 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:02,505 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:02,505 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:02,505 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-15 03:08:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:08:02,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:02,573 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:02,575 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:02,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash 419507359, now seen corresponding path program 1 times [2019-10-15 03:08:02,593 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:02,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306834073] [2019-10-15 03:08:02,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:02,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:02,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:03,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306834073] [2019-10-15 03:08:03,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:03,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:03,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058177264] [2019-10-15 03:08:03,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:03,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:03,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:03,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:03,389 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 2 states. [2019-10-15 03:08:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:03,540 INFO L93 Difference]: Finished difference Result 445 states and 668 transitions. [2019-10-15 03:08:03,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:03,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-15 03:08:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:03,589 INFO L225 Difference]: With dead ends: 445 [2019-10-15 03:08:03,589 INFO L226 Difference]: Without dead ends: 411 [2019-10-15 03:08:03,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-10-15 03:08:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2019-10-15 03:08:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-15 03:08:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 617 transitions. [2019-10-15 03:08:03,755 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 617 transitions. Word has length 92 [2019-10-15 03:08:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:03,758 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 617 transitions. [2019-10-15 03:08:03,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 617 transitions. [2019-10-15 03:08:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 03:08:03,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:03,770 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:03,771 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:03,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2016967492, now seen corresponding path program 1 times [2019-10-15 03:08:03,772 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:03,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191492138] [2019-10-15 03:08:03,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:04,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191492138] [2019-10-15 03:08:04,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:04,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725962226] [2019-10-15 03:08:04,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:04,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:04,142 INFO L87 Difference]: Start difference. First operand 411 states and 617 transitions. Second operand 8 states. [2019-10-15 03:08:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:04,302 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2019-10-15 03:08:04,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:04,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-15 03:08:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:04,308 INFO L225 Difference]: With dead ends: 819 [2019-10-15 03:08:04,309 INFO L226 Difference]: Without dead ends: 450 [2019-10-15 03:08:04,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-15 03:08:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 415. [2019-10-15 03:08:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-10-15 03:08:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 621 transitions. [2019-10-15 03:08:04,386 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 621 transitions. Word has length 93 [2019-10-15 03:08:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:04,388 INFO L462 AbstractCegarLoop]: Abstraction has 415 states and 621 transitions. [2019-10-15 03:08:04,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 621 transitions. [2019-10-15 03:08:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:08:04,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:04,394 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:04,394 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash 514841222, now seen corresponding path program 1 times [2019-10-15 03:08:04,395 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:04,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960987907] [2019-10-15 03:08:04,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:04,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960987907] [2019-10-15 03:08:04,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:04,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001935979] [2019-10-15 03:08:04,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:04,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:04,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:04,667 INFO L87 Difference]: Start difference. First operand 415 states and 621 transitions. Second operand 7 states. [2019-10-15 03:08:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:09,752 INFO L93 Difference]: Finished difference Result 1276 states and 1972 transitions. [2019-10-15 03:08:09,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:08:09,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 03:08:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:09,766 INFO L225 Difference]: With dead ends: 1276 [2019-10-15 03:08:09,810 INFO L226 Difference]: Without dead ends: 903 [2019-10-15 03:08:09,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:08:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-10-15 03:08:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 876. [2019-10-15 03:08:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-15 03:08:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1357 transitions. [2019-10-15 03:08:09,914 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1357 transitions. Word has length 97 [2019-10-15 03:08:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:09,916 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1357 transitions. [2019-10-15 03:08:09,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1357 transitions. [2019-10-15 03:08:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:08:09,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:09,920 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:09,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash -210555956, now seen corresponding path program 1 times [2019-10-15 03:08:09,921 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:09,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404297305] [2019-10-15 03:08:09,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:10,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404297305] [2019-10-15 03:08:10,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:10,146 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:08:10,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579261030] [2019-10-15 03:08:10,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:10,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:10,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:10,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:10,148 INFO L87 Difference]: Start difference. First operand 876 states and 1357 transitions. Second operand 5 states. [2019-10-15 03:08:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:10,234 INFO L93 Difference]: Finished difference Result 1386 states and 2160 transitions. [2019-10-15 03:08:10,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:10,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-15 03:08:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:10,241 INFO L225 Difference]: With dead ends: 1386 [2019-10-15 03:08:10,242 INFO L226 Difference]: Without dead ends: 898 [2019-10-15 03:08:10,244 INFO L600 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 [2019-10-15 03:08:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2019-10-15 03:08:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 888. [2019-10-15 03:08:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-10-15 03:08:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1372 transitions. [2019-10-15 03:08:10,299 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1372 transitions. Word has length 101 [2019-10-15 03:08:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:10,299 INFO L462 AbstractCegarLoop]: Abstraction has 888 states and 1372 transitions. [2019-10-15 03:08:10,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1372 transitions. [2019-10-15 03:08:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 03:08:10,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:10,303 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:10,303 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:10,304 INFO L82 PathProgramCache]: Analyzing trace with hash -184459996, now seen corresponding path program 1 times [2019-10-15 03:08:10,304 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:10,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414397023] [2019-10-15 03:08:10,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:10,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414397023] [2019-10-15 03:08:10,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:10,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:10,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663058005] [2019-10-15 03:08:10,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:10,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:10,629 INFO L87 Difference]: Start difference. First operand 888 states and 1372 transitions. Second operand 8 states. [2019-10-15 03:08:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:15,841 INFO L93 Difference]: Finished difference Result 1881 states and 2911 transitions. [2019-10-15 03:08:15,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:15,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-15 03:08:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:15,853 INFO L225 Difference]: With dead ends: 1881 [2019-10-15 03:08:15,853 INFO L226 Difference]: Without dead ends: 1285 [2019-10-15 03:08:15,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-10-15 03:08:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1235. [2019-10-15 03:08:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-15 03:08:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1866 transitions. [2019-10-15 03:08:15,932 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1866 transitions. Word has length 105 [2019-10-15 03:08:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:15,933 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1866 transitions. [2019-10-15 03:08:15,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1866 transitions. [2019-10-15 03:08:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:08:15,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:15,936 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:15,937 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash -77137945, now seen corresponding path program 1 times [2019-10-15 03:08:15,937 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:15,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699815495] [2019-10-15 03:08:15,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:15,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:15,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:16,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699815495] [2019-10-15 03:08:16,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:16,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:16,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836179414] [2019-10-15 03:08:16,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:16,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:16,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:16,141 INFO L87 Difference]: Start difference. First operand 1235 states and 1866 transitions. Second operand 7 states. [2019-10-15 03:08:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:16,402 INFO L93 Difference]: Finished difference Result 2322 states and 3593 transitions. [2019-10-15 03:08:16,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:16,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-15 03:08:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:16,413 INFO L225 Difference]: With dead ends: 2322 [2019-10-15 03:08:16,413 INFO L226 Difference]: Without dead ends: 1235 [2019-10-15 03:08:16,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2019-10-15 03:08:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2019-10-15 03:08:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-15 03:08:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1834 transitions. [2019-10-15 03:08:16,483 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1834 transitions. Word has length 108 [2019-10-15 03:08:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:16,485 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1834 transitions. [2019-10-15 03:08:16,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1834 transitions. [2019-10-15 03:08:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:08:16,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:16,489 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:16,490 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1803980195, now seen corresponding path program 1 times [2019-10-15 03:08:16,490 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:16,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168150721] [2019-10-15 03:08:16,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:16,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168150721] [2019-10-15 03:08:16,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:16,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:16,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385435349] [2019-10-15 03:08:16,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:16,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:16,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:16,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:16,698 INFO L87 Difference]: Start difference. First operand 1235 states and 1834 transitions. Second operand 7 states. [2019-10-15 03:08:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:20,908 INFO L93 Difference]: Finished difference Result 2191 states and 3263 transitions. [2019-10-15 03:08:20,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:20,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:08:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:20,918 INFO L225 Difference]: With dead ends: 2191 [2019-10-15 03:08:20,919 INFO L226 Difference]: Without dead ends: 1305 [2019-10-15 03:08:20,924 INFO L600 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 [2019-10-15 03:08:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2019-10-15 03:08:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1262. [2019-10-15 03:08:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2019-10-15 03:08:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1868 transitions. [2019-10-15 03:08:21,000 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1868 transitions. Word has length 110 [2019-10-15 03:08:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:21,001 INFO L462 AbstractCegarLoop]: Abstraction has 1262 states and 1868 transitions. [2019-10-15 03:08:21,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1868 transitions. [2019-10-15 03:08:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:21,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:21,004 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:21,005 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:21,005 INFO L82 PathProgramCache]: Analyzing trace with hash 699040819, now seen corresponding path program 1 times [2019-10-15 03:08:21,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:21,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654482381] [2019-10-15 03:08:21,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:08:21,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654482381] [2019-10-15 03:08:21,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:21,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:21,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099870382] [2019-10-15 03:08:21,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:21,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:21,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:21,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:21,253 INFO L87 Difference]: Start difference. First operand 1262 states and 1868 transitions. Second operand 4 states. [2019-10-15 03:08:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:23,028 INFO L93 Difference]: Finished difference Result 3811 states and 5777 transitions. [2019-10-15 03:08:23,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:23,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:23,053 INFO L225 Difference]: With dead ends: 3811 [2019-10-15 03:08:23,054 INFO L226 Difference]: Without dead ends: 2591 [2019-10-15 03:08:23,064 INFO L600 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 [2019-10-15 03:08:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2019-10-15 03:08:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2446. [2019-10-15 03:08:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2019-10-15 03:08:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3682 transitions. [2019-10-15 03:08:23,270 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3682 transitions. Word has length 117 [2019-10-15 03:08:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:23,271 INFO L462 AbstractCegarLoop]: Abstraction has 2446 states and 3682 transitions. [2019-10-15 03:08:23,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3682 transitions. [2019-10-15 03:08:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:08:23,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:23,274 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:23,275 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -625412398, now seen corresponding path program 1 times [2019-10-15 03:08:23,276 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:23,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559312928] [2019-10-15 03:08:23,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:23,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559312928] [2019-10-15 03:08:23,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:23,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:23,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459461288] [2019-10-15 03:08:23,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:23,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:23,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:23,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:23,431 INFO L87 Difference]: Start difference. First operand 2446 states and 3682 transitions. Second operand 4 states. [2019-10-15 03:08:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:25,364 INFO L93 Difference]: Finished difference Result 7285 states and 11223 transitions. [2019-10-15 03:08:25,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:25,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-15 03:08:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:25,407 INFO L225 Difference]: With dead ends: 7285 [2019-10-15 03:08:25,407 INFO L226 Difference]: Without dead ends: 4882 [2019-10-15 03:08:25,427 INFO L600 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 [2019-10-15 03:08:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2019-10-15 03:08:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4704. [2019-10-15 03:08:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4704 states. [2019-10-15 03:08:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7176 transitions. [2019-10-15 03:08:25,717 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7176 transitions. Word has length 115 [2019-10-15 03:08:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:25,718 INFO L462 AbstractCegarLoop]: Abstraction has 4704 states and 7176 transitions. [2019-10-15 03:08:25,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7176 transitions. [2019-10-15 03:08:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 03:08:25,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:25,722 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:25,722 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2085775840, now seen corresponding path program 1 times [2019-10-15 03:08:25,722 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:25,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303768460] [2019-10-15 03:08:25,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:25,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303768460] [2019-10-15 03:08:25,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:25,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:25,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386675126] [2019-10-15 03:08:25,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:25,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:25,862 INFO L87 Difference]: Start difference. First operand 4704 states and 7176 transitions. Second operand 4 states. [2019-10-15 03:08:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:28,881 INFO L93 Difference]: Finished difference Result 14141 states and 22307 transitions. [2019-10-15 03:08:28,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:28,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-15 03:08:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:28,975 INFO L225 Difference]: With dead ends: 14141 [2019-10-15 03:08:28,975 INFO L226 Difference]: Without dead ends: 9482 [2019-10-15 03:08:29,020 INFO L600 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 [2019-10-15 03:08:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2019-10-15 03:08:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 9239. [2019-10-15 03:08:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9239 states. [2019-10-15 03:08:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 14382 transitions. [2019-10-15 03:08:30,215 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 14382 transitions. Word has length 116 [2019-10-15 03:08:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:30,216 INFO L462 AbstractCegarLoop]: Abstraction has 9239 states and 14382 transitions. [2019-10-15 03:08:30,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 14382 transitions. [2019-10-15 03:08:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:30,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:30,222 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:30,222 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash 233269204, now seen corresponding path program 1 times [2019-10-15 03:08:30,223 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:30,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569769228] [2019-10-15 03:08:30,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:30,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:30,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:30,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569769228] [2019-10-15 03:08:30,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:30,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:30,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155914734] [2019-10-15 03:08:30,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:30,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:30,431 INFO L87 Difference]: Start difference. First operand 9239 states and 14382 transitions. Second operand 4 states.