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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:05,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:06,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:06,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:06,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:06,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:06,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:06,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:06,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:06,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:06,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:06,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:06,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:06,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:06,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:06,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:06,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:06,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:06,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:06,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:06,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:06,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:06,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:06,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:06,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:06,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:06,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:06,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:06,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:06,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:06,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:06,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:06,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:06,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:06,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:06,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:06,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:06,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:06,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:06,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:06,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:06,082 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 03:09:06,099 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:06,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:06,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:06,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:06,102 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:06,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:06,102 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:06,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:06,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:06,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:06,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:06,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:06,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:06,104 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:06,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:06,104 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:06,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:06,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:06,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:06,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:06,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:06,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:06,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:06,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:06,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:06,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:06,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:06,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:06,107 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 03:09:06,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:06,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:06,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:06,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:06,543 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:06,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-15 03:09:06,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf02df9a/212fb5cb38f9470faba6d8865cce59df/FLAGef6a8cfd5 [2019-10-15 03:09:07,341 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:07,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-15 03:09:07,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf02df9a/212fb5cb38f9470faba6d8865cce59df/FLAGef6a8cfd5 [2019-10-15 03:09:07,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf02df9a/212fb5cb38f9470faba6d8865cce59df [2019-10-15 03:09:07,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:07,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:07,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:07,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:07,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:07,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:07" (1/1) ... [2019-10-15 03:09:07,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7608d17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:07, skipping insertion in model container [2019-10-15 03:09:07,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:07" (1/1) ... [2019-10-15 03:09:07,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:07,587 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:08,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:08,474 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:08,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:08,661 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:08,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08 WrapperNode [2019-10-15 03:09:08,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:08,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:08,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:08,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:08,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (1/1) ... [2019-10-15 03:09:08,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:08,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:08,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:08,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:08,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (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 03:09:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:08,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:09,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:09,007 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:09,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:09,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:09,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:09,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:09,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:09,008 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:09,013 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:09,013 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:09,013 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:14,753 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:14,753 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:14,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:14 BoogieIcfgContainer [2019-10-15 03:09:14,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:14,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:14,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:14,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:14,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:07" (1/3) ... [2019-10-15 03:09:14,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0f838a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:14, skipping insertion in model container [2019-10-15 03:09:14,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:08" (2/3) ... [2019-10-15 03:09:14,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0f838a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:14, skipping insertion in model container [2019-10-15 03:09:14,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:14" (3/3) ... [2019-10-15 03:09:14,764 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-10-15 03:09:14,776 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:14,786 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:14,797 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:14,831 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:14,831 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:14,832 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:14,832 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:14,832 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:14,832 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:14,832 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:14,833 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states. [2019-10-15 03:09:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:14,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:14,887 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:14,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash 138633928, now seen corresponding path program 1 times [2019-10-15 03:09:14,908 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:14,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280008605] [2019-10-15 03:09:14,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:14,909 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:14,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:16,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280008605] [2019-10-15 03:09:16,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:16,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:16,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92897342] [2019-10-15 03:09:16,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:16,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:16,082 INFO L87 Difference]: Start difference. First operand 588 states. Second operand 7 states. [2019-10-15 03:09:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:20,312 INFO L93 Difference]: Finished difference Result 1754 states and 2733 transitions. [2019-10-15 03:09:20,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:20,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:09:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:20,359 INFO L225 Difference]: With dead ends: 1754 [2019-10-15 03:09:20,359 INFO L226 Difference]: Without dead ends: 1288 [2019-10-15 03:09:20,371 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 03:09:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-10-15 03:09:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1248. [2019-10-15 03:09:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-10-15 03:09:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1923 transitions. [2019-10-15 03:09:20,658 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1923 transitions. Word has length 119 [2019-10-15 03:09:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:20,659 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1923 transitions. [2019-10-15 03:09:20,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1923 transitions. [2019-10-15 03:09:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:20,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:20,677 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:20,678 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash -306320997, now seen corresponding path program 1 times [2019-10-15 03:09:20,680 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:20,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863602871] [2019-10-15 03:09:20,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:21,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863602871] [2019-10-15 03:09:21,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319804456] [2019-10-15 03:09:21,195 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 03:09:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:21,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:21,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:21,992 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:22,234 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:22,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:22,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285651920] [2019-10-15 03:09:22,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:22,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:22,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:22,247 INFO L87 Difference]: Start difference. First operand 1248 states and 1923 transitions. Second operand 3 states. [2019-10-15 03:09:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:22,485 INFO L93 Difference]: Finished difference Result 3516 states and 5546 transitions. [2019-10-15 03:09:22,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:22,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:09:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:22,513 INFO L225 Difference]: With dead ends: 3516 [2019-10-15 03:09:22,513 INFO L226 Difference]: Without dead ends: 2299 [2019-10-15 03:09:22,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-15 03:09:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2231. [2019-10-15 03:09:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2019-10-15 03:09:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3466 transitions. [2019-10-15 03:09:22,711 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3466 transitions. Word has length 118 [2019-10-15 03:09:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:22,717 INFO L462 AbstractCegarLoop]: Abstraction has 2231 states and 3466 transitions. [2019-10-15 03:09:22,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3466 transitions. [2019-10-15 03:09:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:22,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:22,739 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:22,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:22,960 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1718735099, now seen corresponding path program 1 times [2019-10-15 03:09:22,963 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:22,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074606819] [2019-10-15 03:09:22,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:22,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:22,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:23,459 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-10-15 03:09:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:23,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074606819] [2019-10-15 03:09:23,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571450122] [2019-10-15 03:09:23,535 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 03:09:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:24,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:24,384 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:24,561 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:24,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:09:24,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054030780] [2019-10-15 03:09:24,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:24,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:24,564 INFO L87 Difference]: Start difference. First operand 2231 states and 3466 transitions. Second operand 4 states. [2019-10-15 03:09:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:24,792 INFO L93 Difference]: Finished difference Result 4313 states and 6775 transitions. [2019-10-15 03:09:24,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:24,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:09:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:24,811 INFO L225 Difference]: With dead ends: 4313 [2019-10-15 03:09:24,812 INFO L226 Difference]: Without dead ends: 2113 [2019-10-15 03:09:24,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2019-10-15 03:09:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2063. [2019-10-15 03:09:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2019-10-15 03:09:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3177 transitions. [2019-10-15 03:09:24,989 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3177 transitions. Word has length 120 [2019-10-15 03:09:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:24,990 INFO L462 AbstractCegarLoop]: Abstraction has 2063 states and 3177 transitions. [2019-10-15 03:09:24,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3177 transitions. [2019-10-15 03:09:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:24,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:24,997 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:25,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:25,218 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:25,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:25,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1806161369, now seen corresponding path program 1 times [2019-10-15 03:09:25,219 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:25,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452719481] [2019-10-15 03:09:25,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:25,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452719481] [2019-10-15 03:09:25,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684797194] [2019-10-15 03:09:25,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:26,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:26,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:26,417 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:26,691 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:26,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:26,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672759260] [2019-10-15 03:09:26,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:26,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:26,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:26,693 INFO L87 Difference]: Start difference. First operand 2063 states and 3177 transitions. Second operand 3 states. [2019-10-15 03:09:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:26,897 INFO L93 Difference]: Finished difference Result 5144 states and 8069 transitions. [2019-10-15 03:09:26,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:26,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:09:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:26,926 INFO L225 Difference]: With dead ends: 5144 [2019-10-15 03:09:26,926 INFO L226 Difference]: Without dead ends: 3112 [2019-10-15 03:09:26,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2019-10-15 03:09:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3027. [2019-10-15 03:09:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3027 states. [2019-10-15 03:09:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4688 transitions. [2019-10-15 03:09:27,355 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4688 transitions. Word has length 119 [2019-10-15 03:09:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:27,356 INFO L462 AbstractCegarLoop]: Abstraction has 3027 states and 4688 transitions. [2019-10-15 03:09:27,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4688 transitions. [2019-10-15 03:09:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:27,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:27,368 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:27,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:27,586 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1651845294, now seen corresponding path program 1 times [2019-10-15 03:09:27,588 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:27,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947485920] [2019-10-15 03:09:27,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:27,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:27,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:28,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947485920] [2019-10-15 03:09:28,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290819964] [2019-10-15 03:09:28,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:28,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:28,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:28,877 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:29,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:29,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:29,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:29,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661167592] [2019-10-15 03:09:29,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:29,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:29,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:29,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:29,441 INFO L87 Difference]: Start difference. First operand 3027 states and 4688 transitions. Second operand 6 states. [2019-10-15 03:09:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:31,211 INFO L93 Difference]: Finished difference Result 7950 states and 12529 transitions. [2019-10-15 03:09:31,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:31,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:09:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:31,282 INFO L225 Difference]: With dead ends: 7950 [2019-10-15 03:09:31,282 INFO L226 Difference]: Without dead ends: 4954 [2019-10-15 03:09:31,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2019-10-15 03:09:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4918. [2019-10-15 03:09:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4918 states. [2019-10-15 03:09:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 7492 transitions. [2019-10-15 03:09:31,703 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 7492 transitions. Word has length 120 [2019-10-15 03:09:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:31,704 INFO L462 AbstractCegarLoop]: Abstraction has 4918 states and 7492 transitions. [2019-10-15 03:09:31,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 7492 transitions. [2019-10-15 03:09:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:31,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:31,710 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:31,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:31,922 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2036031418, now seen corresponding path program 1 times [2019-10-15 03:09:31,923 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:31,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428038448] [2019-10-15 03:09:31,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:09:32,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428038448] [2019-10-15 03:09:32,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:32,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:32,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794348738] [2019-10-15 03:09:32,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:32,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:32,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:32,250 INFO L87 Difference]: Start difference. First operand 4918 states and 7492 transitions. Second operand 10 states. [2019-10-15 03:09:36,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:36,641 INFO L93 Difference]: Finished difference Result 17622 states and 27575 transitions. [2019-10-15 03:09:36,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:09:36,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:09:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:36,770 INFO L225 Difference]: With dead ends: 17622 [2019-10-15 03:09:36,771 INFO L226 Difference]: Without dead ends: 12735 [2019-10-15 03:09:36,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-10-15 03:09:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 12462. [2019-10-15 03:09:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12462 states. [2019-10-15 03:09:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12462 states to 12462 states and 19328 transitions. [2019-10-15 03:09:38,246 INFO L78 Accepts]: Start accepts. Automaton has 12462 states and 19328 transitions. Word has length 125 [2019-10-15 03:09:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:38,247 INFO L462 AbstractCegarLoop]: Abstraction has 12462 states and 19328 transitions. [2019-10-15 03:09:38,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12462 states and 19328 transitions. [2019-10-15 03:09:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:38,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:38,251 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:38,251 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:38,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1384513082, now seen corresponding path program 1 times [2019-10-15 03:09:38,252 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:38,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192090182] [2019-10-15 03:09:38,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:38,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192090182] [2019-10-15 03:09:38,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782092518] [2019-10-15 03:09:38,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:39,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:09:39,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:09:39,509 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:39,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:39,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-15 03:09:39,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65322320] [2019-10-15 03:09:39,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:39,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:39,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:39,883 INFO L87 Difference]: Start difference. First operand 12462 states and 19328 transitions. Second operand 7 states.