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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:17,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:17,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:17,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:17,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:17,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:17,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:17,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:17,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:17,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:17,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:17,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:17,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:17,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:17,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:17,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:17,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:17,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:17,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:17,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:17,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:17,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:17,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:17,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:17,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:17,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:17,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:17,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:17,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:17,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:17,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:17,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:17,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:17,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:17,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:17,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:17,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:17,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:17,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:17,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:17,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:17,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:05:17,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:17,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:17,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:17,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:17,615 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:17,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:17,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:17,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:17,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:17,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:17,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:17,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:17,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:17,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:17,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:17,617 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:17,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:17,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:17,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:17,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:17,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:17,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:17,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:17,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:17,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:17,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:17,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:17,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:17,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:05:17,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:17,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:17,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:17,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:17,987 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:17,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-13 23:05:18,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bf8ba56/a38816f56986497ba25e570b4ef74fe8/FLAG3b8ecd63d [2019-10-13 23:05:18,715 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:18,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-13 23:05:18,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bf8ba56/a38816f56986497ba25e570b4ef74fe8/FLAG3b8ecd63d [2019-10-13 23:05:18,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24bf8ba56/a38816f56986497ba25e570b4ef74fe8 [2019-10-13 23:05:18,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:18,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:18,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:18,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:18,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:18,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:18" (1/1) ... [2019-10-13 23:05:18,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:18, skipping insertion in model container [2019-10-13 23:05:18,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:18" (1/1) ... [2019-10-13 23:05:18,999 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:19,079 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:19,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:19,777 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:19,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:20,098 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:20,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20 WrapperNode [2019-10-13 23:05:20,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:20,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:20,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:20,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:20,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:20,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:20,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:20,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:20,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:20,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:05:20,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:05:20,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:25,390 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:25,390 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:25,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:25 BoogieIcfgContainer [2019-10-13 23:05:25,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:25,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:25,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:25,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:25,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:18" (1/3) ... [2019-10-13 23:05:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba5381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:25, skipping insertion in model container [2019-10-13 23:05:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20" (2/3) ... [2019-10-13 23:05:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba5381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:25, skipping insertion in model container [2019-10-13 23:05:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:25" (3/3) ... [2019-10-13 23:05:25,400 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2019-10-13 23:05:25,410 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:25,419 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:25,431 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:25,464 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:25,464 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:25,464 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:25,464 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:25,465 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:25,465 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:25,465 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:25,465 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states. [2019-10-13 23:05:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:25,520 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:25,522 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] [2019-10-13 23:05:25,524 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1110816202, now seen corresponding path program 1 times [2019-10-13 23:05:25,540 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:25,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52808621] [2019-10-13 23:05:25,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:25,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:25,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:26,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52808621] [2019-10-13 23:05:26,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028790277] [2019-10-13 23:05:26,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:27,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:27,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:27,134 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:27,318 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:27,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-13 23:05:27,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548276615] [2019-10-13 23:05:27,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:27,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:27,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:27,344 INFO L87 Difference]: Start difference. First operand 625 states. Second operand 4 states. [2019-10-13 23:05:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:28,742 INFO L93 Difference]: Finished difference Result 1816 states and 2759 transitions. [2019-10-13 23:05:28,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:28,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:05:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:28,775 INFO L225 Difference]: With dead ends: 1816 [2019-10-13 23:05:28,775 INFO L226 Difference]: Without dead ends: 1313 [2019-10-13 23:05:28,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-13 23:05:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1272. [2019-10-13 23:05:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2019-10-13 23:05:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1907 transitions. [2019-10-13 23:05:28,970 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1907 transitions. Word has length 119 [2019-10-13 23:05:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:28,972 INFO L462 AbstractCegarLoop]: Abstraction has 1272 states and 1907 transitions. [2019-10-13 23:05:28,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1907 transitions. [2019-10-13 23:05:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:28,991 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:28,991 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] [2019-10-13 23:05:29,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:29,200 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash 330968778, now seen corresponding path program 1 times [2019-10-13 23:05:29,201 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:29,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031810791] [2019-10-13 23:05:29,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:29,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:29,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:29,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031810791] [2019-10-13 23:05:29,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:29,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:29,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083923330] [2019-10-13 23:05:29,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:29,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:29,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:29,576 INFO L87 Difference]: Start difference. First operand 1272 states and 1907 transitions. Second operand 7 states. [2019-10-13 23:05:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:32,655 INFO L93 Difference]: Finished difference Result 4886 states and 7542 transitions. [2019-10-13 23:05:32,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:32,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 23:05:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:32,720 INFO L225 Difference]: With dead ends: 4886 [2019-10-13 23:05:32,721 INFO L226 Difference]: Without dead ends: 3645 [2019-10-13 23:05:32,733 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 [2019-10-13 23:05:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2019-10-13 23:05:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3543. [2019-10-13 23:05:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2019-10-13 23:05:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5442 transitions. [2019-10-13 23:05:33,056 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5442 transitions. Word has length 119 [2019-10-13 23:05:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:33,060 INFO L462 AbstractCegarLoop]: Abstraction has 3543 states and 5442 transitions. [2019-10-13 23:05:33,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5442 transitions. [2019-10-13 23:05:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:33,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:33,075 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, 1] [2019-10-13 23:05:33,075 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 968714229, now seen corresponding path program 1 times [2019-10-13 23:05:33,076 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:33,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126308253] [2019-10-13 23:05:33,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:33,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:33,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:33,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126308253] [2019-10-13 23:05:33,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200721342] [2019-10-13 23:05:33,439 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 [2019-10-13 23:05:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:34,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:34,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:34,171 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:34,340 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:34,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-13 23:05:34,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93925712] [2019-10-13 23:05:34,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:34,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:34,344 INFO L87 Difference]: Start difference. First operand 3543 states and 5442 transitions. Second operand 4 states. [2019-10-13 23:05:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:34,561 INFO L93 Difference]: Finished difference Result 6923 states and 10728 transitions. [2019-10-13 23:05:34,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:34,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:05:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:34,595 INFO L225 Difference]: With dead ends: 6923 [2019-10-13 23:05:34,595 INFO L226 Difference]: Without dead ends: 3411 [2019-10-13 23:05:34,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2019-10-13 23:05:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3349. [2019-10-13 23:05:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3349 states. [2019-10-13 23:05:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5113 transitions. [2019-10-13 23:05:34,860 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5113 transitions. Word has length 121 [2019-10-13 23:05:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:34,861 INFO L462 AbstractCegarLoop]: Abstraction has 3349 states and 5113 transitions. [2019-10-13 23:05:34,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5113 transitions. [2019-10-13 23:05:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:34,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:34,870 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] [2019-10-13 23:05:35,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:35,081 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1549090926, now seen corresponding path program 1 times [2019-10-13 23:05:35,082 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:35,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132847122] [2019-10-13 23:05:35,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:35,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132847122] [2019-10-13 23:05:35,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284405814] [2019-10-13 23:05:35,405 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 [2019-10-13 23:05:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:36,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:36,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:36,157 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:36,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:36,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:36,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:05:36,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153963841] [2019-10-13 23:05:36,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:36,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:36,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:36,478 INFO L87 Difference]: Start difference. First operand 3349 states and 5113 transitions. Second operand 6 states. [2019-10-13 23:05:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:38,191 INFO L93 Difference]: Finished difference Result 8924 states and 13939 transitions. [2019-10-13 23:05:38,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:38,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 23:05:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:38,243 INFO L225 Difference]: With dead ends: 8924 [2019-10-13 23:05:38,243 INFO L226 Difference]: Without dead ends: 5606 [2019-10-13 23:05:38,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-13 23:05:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5569. [2019-10-13 23:05:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5569 states. [2019-10-13 23:05:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 8410 transitions. [2019-10-13 23:05:38,605 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 8410 transitions. Word has length 120 [2019-10-13 23:05:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,606 INFO L462 AbstractCegarLoop]: Abstraction has 5569 states and 8410 transitions. [2019-10-13 23:05:38,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 8410 transitions. [2019-10-13 23:05:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:38,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,616 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] [2019-10-13 23:05:38,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:38,824 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,825 INFO L82 PathProgramCache]: Analyzing trace with hash -739146545, now seen corresponding path program 1 times [2019-10-13 23:05:38,825 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334768201] [2019-10-13 23:05:38,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:39,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334768201] [2019-10-13 23:05:39,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492133910] [2019-10-13 23:05:39,049 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 [2019-10-13 23:05:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:39,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:39,628 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:39,754 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:39,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:39,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451155395] [2019-10-13 23:05:39,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:39,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:39,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:39,757 INFO L87 Difference]: Start difference. First operand 5569 states and 8410 transitions. Second operand 3 states. [2019-10-13 23:05:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:39,996 INFO L93 Difference]: Finished difference Result 12479 states and 18985 transitions. [2019-10-13 23:05:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:39,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:40,058 INFO L225 Difference]: With dead ends: 12479 [2019-10-13 23:05:40,058 INFO L226 Difference]: Without dead ends: 6941 [2019-10-13 23:05:40,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2019-10-13 23:05:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 5491. [2019-10-13 23:05:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5491 states. [2019-10-13 23:05:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 8260 transitions. [2019-10-13 23:05:40,477 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 8260 transitions. Word has length 119 [2019-10-13 23:05:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:40,479 INFO L462 AbstractCegarLoop]: Abstraction has 5491 states and 8260 transitions. [2019-10-13 23:05:40,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 8260 transitions. [2019-10-13 23:05:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:05:40,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:40,483 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] [2019-10-13 23:05:40,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:40,693 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:40,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1696696706, now seen corresponding path program 1 times [2019-10-13 23:05:40,693 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:40,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514474861] [2019-10-13 23:05:40,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:40,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514474861] [2019-10-13 23:05:40,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:40,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:40,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831965414] [2019-10-13 23:05:40,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:40,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:40,955 INFO L87 Difference]: Start difference. First operand 5491 states and 8260 transitions. Second operand 10 states. [2019-10-13 23:05:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:44,345 INFO L93 Difference]: Finished difference Result 19640 states and 30581 transitions. [2019-10-13 23:05:44,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:44,346 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-13 23:05:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:44,476 INFO L225 Difference]: With dead ends: 19640 [2019-10-13 23:05:44,476 INFO L226 Difference]: Without dead ends: 14180 [2019-10-13 23:05:44,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14180 states. [2019-10-13 23:05:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14180 to 13852. [2019-10-13 23:05:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13852 states. [2019-10-13 23:05:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13852 states to 13852 states and 21362 transitions. [2019-10-13 23:05:45,157 INFO L78 Accepts]: Start accepts. Automaton has 13852 states and 21362 transitions. Word has length 125 [2019-10-13 23:05:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:45,158 INFO L462 AbstractCegarLoop]: Abstraction has 13852 states and 21362 transitions. [2019-10-13 23:05:45,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 13852 states and 21362 transitions. [2019-10-13 23:05:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:05:45,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:45,162 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] [2019-10-13 23:05:45,163 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash 946385200, now seen corresponding path program 1 times [2019-10-13 23:05:45,163 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:45,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164633039] [2019-10-13 23:05:45,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:45,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164633039] [2019-10-13 23:05:45,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692756018] [2019-10-13 23:05:45,392 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 [2019-10-13 23:05:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:46,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:05:46,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:05:46,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:46,624 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:46,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-13 23:05:46,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355293199] [2019-10-13 23:05:46,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:46,627 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:46,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:46,627 INFO L87 Difference]: Start difference. First operand 13852 states and 21362 transitions. Second operand 7 states. [2019-10-13 23:05:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:49,240 INFO L93 Difference]: Finished difference Result 29176 states and 45036 transitions. [2019-10-13 23:05:49,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:05:49,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:05:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:49,335 INFO L225 Difference]: With dead ends: 29176 [2019-10-13 23:05:49,336 INFO L226 Difference]: Without dead ends: 15355 [2019-10-13 23:05:49,388 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15355 states.