java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:08,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:08,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:08,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:08,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:08,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:08,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:08,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:08,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:08,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:08,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:08,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:08,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:08,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:08,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:08,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:08,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:08,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:08,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:08,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:08,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:08,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:08,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:08,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:08,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:08,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:08,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:08,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:08,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:08,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:08,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:08,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:08,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:08,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:08,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:08,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:08,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:08,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:08,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:08,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:08,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:08,105 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 03:09:08,120 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:08,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:08,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:08,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:08,124 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:08,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:08,125 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:08,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:08,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:08,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:08,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:08,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:08,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:08,126 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:08,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:08,126 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:08,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:08,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:08,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:08,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:08,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:08,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:08,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:08,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:08,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:08,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:08,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:08,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:08,130 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 03:09:08,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:08,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:08,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:08,511 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:08,511 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:08,512 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-15 03:09:08,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544d7948d/87022e85da0e41e58a8e447880e685f6/FLAG2d700d6ed [2019-10-15 03:09:09,261 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:09,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-15 03:09:09,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544d7948d/87022e85da0e41e58a8e447880e685f6/FLAG2d700d6ed [2019-10-15 03:09:09,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544d7948d/87022e85da0e41e58a8e447880e685f6 [2019-10-15 03:09:09,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:09,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:09,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:09,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:09,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:09,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:09" (1/1) ... [2019-10-15 03:09:09,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b91cb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:09, skipping insertion in model container [2019-10-15 03:09:09,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:09" (1/1) ... [2019-10-15 03:09:09,531 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:09,643 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:10,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:10,507 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:10,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:10,785 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:10,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10 WrapperNode [2019-10-15 03:09:10,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:10,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:10,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:10,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:10,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (1/1) ... [2019-10-15 03:09:10,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:10,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:10,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:10,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:10,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (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 03:09:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:11,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:11,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:11,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:11,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:11,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:11,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:11,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:11,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:11,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:11,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:11,061 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:11,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:11,062 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-15 03:09:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-15 03:09:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:16,944 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:16,945 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:16,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:16 BoogieIcfgContainer [2019-10-15 03:09:16,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:16,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:16,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:16,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:16,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:09" (1/3) ... [2019-10-15 03:09:16,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc1f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:16, skipping insertion in model container [2019-10-15 03:09:16,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:10" (2/3) ... [2019-10-15 03:09:16,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc1f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:16, skipping insertion in model container [2019-10-15 03:09:16,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:16" (3/3) ... [2019-10-15 03:09:16,966 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2019-10-15 03:09:16,982 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:16,999 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:17,018 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:17,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:17,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:17,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:17,072 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:17,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:17,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:17,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:17,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2019-10-15 03:09:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:17,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:17,148 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] [2019-10-15 03:09:17,153 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1732124610, now seen corresponding path program 1 times [2019-10-15 03:09:17,173 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:17,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525483112] [2019-10-15 03:09:17,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:17,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:17,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:17,999 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 03:09:18,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525483112] [2019-10-15 03:09:18,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:18,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:18,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480890209] [2019-10-15 03:09:18,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:18,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:18,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:18,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:18,025 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 8 states. [2019-10-15 03:09:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:23,526 INFO L93 Difference]: Finished difference Result 1630 states and 2514 transitions. [2019-10-15 03:09:23,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:23,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-15 03:09:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:23,563 INFO L225 Difference]: With dead ends: 1630 [2019-10-15 03:09:23,563 INFO L226 Difference]: Without dead ends: 1175 [2019-10-15 03:09:23,573 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-15 03:09:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1165. [2019-10-15 03:09:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-15 03:09:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1750 transitions. [2019-10-15 03:09:23,753 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1750 transitions. Word has length 80 [2019-10-15 03:09:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:23,753 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1750 transitions. [2019-10-15 03:09:23,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1750 transitions. [2019-10-15 03:09:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:23,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:23,758 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] [2019-10-15 03:09:23,759 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -320565942, now seen corresponding path program 1 times [2019-10-15 03:09:23,759 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:23,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687202111] [2019-10-15 03:09:23,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,100 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 03:09:24,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687202111] [2019-10-15 03:09:24,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:24,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:09:24,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251725758] [2019-10-15 03:09:24,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:24,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:24,118 INFO L87 Difference]: Start difference. First operand 1165 states and 1750 transitions. Second operand 3 states. [2019-10-15 03:09:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:24,377 INFO L93 Difference]: Finished difference Result 3423 states and 5209 transitions. [2019-10-15 03:09:24,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:24,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:09:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:24,403 INFO L225 Difference]: With dead ends: 3423 [2019-10-15 03:09:24,403 INFO L226 Difference]: Without dead ends: 2291 [2019-10-15 03:09:24,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-10-15 03:09:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2167. [2019-10-15 03:09:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2019-10-15 03:09:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3304 transitions. [2019-10-15 03:09:24,670 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3304 transitions. Word has length 81 [2019-10-15 03:09:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:24,671 INFO L462 AbstractCegarLoop]: Abstraction has 2167 states and 3304 transitions. [2019-10-15 03:09:24,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3304 transitions. [2019-10-15 03:09:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:09:24,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:24,679 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, 1, 1, 1] [2019-10-15 03:09:24,679 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1453420152, now seen corresponding path program 1 times [2019-10-15 03:09:24,680 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:24,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906777919] [2019-10-15 03:09:24,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:24,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:24,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,993 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 03:09:24,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906777919] [2019-10-15 03:09:24,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:24,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:24,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677575051] [2019-10-15 03:09:24,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:24,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:24,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:25,000 INFO L87 Difference]: Start difference. First operand 2167 states and 3304 transitions. Second operand 7 states. [2019-10-15 03:09:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:30,202 INFO L93 Difference]: Finished difference Result 6439 states and 10068 transitions. [2019-10-15 03:09:30,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:30,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:09:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:30,237 INFO L225 Difference]: With dead ends: 6439 [2019-10-15 03:09:30,237 INFO L226 Difference]: Without dead ends: 4303 [2019-10-15 03:09:30,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2019-10-15 03:09:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 4221. [2019-10-15 03:09:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2019-10-15 03:09:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6506 transitions. [2019-10-15 03:09:30,488 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6506 transitions. Word has length 113 [2019-10-15 03:09:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:30,489 INFO L462 AbstractCegarLoop]: Abstraction has 4221 states and 6506 transitions. [2019-10-15 03:09:30,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6506 transitions. [2019-10-15 03:09:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:09:30,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:30,495 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, 1] [2019-10-15 03:09:30,496 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash 602971424, now seen corresponding path program 1 times [2019-10-15 03:09:30,497 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:30,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634731242] [2019-10-15 03:09:30,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:30,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:30,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:31,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634731242] [2019-10-15 03:09:31,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141031281] [2019-10-15 03:09:31,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:31,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:31,805 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:32,069 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 03:09:32,070 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:32,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:32,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180033893] [2019-10-15 03:09:32,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:32,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:32,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:32,074 INFO L87 Difference]: Start difference. First operand 4221 states and 6506 transitions. Second operand 3 states. [2019-10-15 03:09:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:32,660 INFO L93 Difference]: Finished difference Result 11855 states and 18949 transitions. [2019-10-15 03:09:32,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:32,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-15 03:09:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:32,746 INFO L225 Difference]: With dead ends: 11855 [2019-10-15 03:09:32,746 INFO L226 Difference]: Without dead ends: 7665 [2019-10-15 03:09:32,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2019-10-15 03:09:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 7355. [2019-10-15 03:09:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7355 states. [2019-10-15 03:09:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 11484 transitions. [2019-10-15 03:09:33,433 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 11484 transitions. Word has length 111 [2019-10-15 03:09:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,434 INFO L462 AbstractCegarLoop]: Abstraction has 7355 states and 11484 transitions. [2019-10-15 03:09:33,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 11484 transitions. [2019-10-15 03:09:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:09:33,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,438 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, 1, 1] [2019-10-15 03:09:33,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:33,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,650 INFO L82 PathProgramCache]: Analyzing trace with hash -77177083, now seen corresponding path program 1 times [2019-10-15 03:09:33,650 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848887999] [2019-10-15 03:09:33,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:34,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848887999] [2019-10-15 03:09:34,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160600154] [2019-10-15 03:09:34,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:34,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:35,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:35,300 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 03:09:35,301 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:35,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:35,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954621939] [2019-10-15 03:09:35,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:35,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:35,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:35,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:35,304 INFO L87 Difference]: Start difference. First operand 7355 states and 11484 transitions. Second operand 3 states. [2019-10-15 03:09:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:35,816 INFO L93 Difference]: Finished difference Result 16271 states and 25864 transitions. [2019-10-15 03:09:35,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:35,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-15 03:09:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:35,927 INFO L225 Difference]: With dead ends: 16271 [2019-10-15 03:09:35,927 INFO L226 Difference]: Without dead ends: 8947 [2019-10-15 03:09:36,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8947 states. [2019-10-15 03:09:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 8733. [2019-10-15 03:09:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8733 states. [2019-10-15 03:09:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 13618 transitions. [2019-10-15 03:09:36,699 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 13618 transitions. Word has length 112 [2019-10-15 03:09:36,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:36,700 INFO L462 AbstractCegarLoop]: Abstraction has 8733 states and 13618 transitions. [2019-10-15 03:09:36,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:36,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 13618 transitions. [2019-10-15 03:09:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:36,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:36,710 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, 1] [2019-10-15 03:09:36,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:36,912 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:36,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1479641642, now seen corresponding path program 1 times [2019-10-15 03:09:36,913 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:36,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432915865] [2019-10-15 03:09:36,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:37,437 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 03:09:37,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432915865] [2019-10-15 03:09:37,441 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:37,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:37,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877215480] [2019-10-15 03:09:37,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:37,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:37,445 INFO L87 Difference]: Start difference. First operand 8733 states and 13618 transitions. Second operand 10 states. [2019-10-15 03:09:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:39,306 INFO L93 Difference]: Finished difference Result 19257 states and 30356 transitions. [2019-10-15 03:09:39,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:39,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2019-10-15 03:09:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:39,381 INFO L225 Difference]: With dead ends: 19257 [2019-10-15 03:09:39,382 INFO L226 Difference]: Without dead ends: 10555 [2019-10-15 03:09:39,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:09:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10555 states. [2019-10-15 03:09:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10555 to 10513. [2019-10-15 03:09:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-10-15 03:09:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16373 transitions. [2019-10-15 03:09:40,132 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16373 transitions. Word has length 118 [2019-10-15 03:09:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:40,132 INFO L462 AbstractCegarLoop]: Abstraction has 10513 states and 16373 transitions. [2019-10-15 03:09:40,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16373 transitions. [2019-10-15 03:09:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:40,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:40,136 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, 1, 1] [2019-10-15 03:09:40,137 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:40,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:40,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1834686710, now seen corresponding path program 1 times [2019-10-15 03:09:40,137 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:40,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100389417] [2019-10-15 03:09:40,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:40,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100389417] [2019-10-15 03:09:40,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:40,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:40,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475657234] [2019-10-15 03:09:40,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:40,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:40,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:40,449 INFO L87 Difference]: Start difference. First operand 10513 states and 16373 transitions. Second operand 10 states.