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_spec14_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:17,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:17,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:17,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:17,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:17,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:17,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:17,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:17,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:17,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:17,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:17,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:17,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:17,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:17,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:17,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:17,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:17,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:17,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:17,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:17,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:17,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:17,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:17,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:17,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:17,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:17,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:17,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:17,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:17,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:17,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:17,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:17,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:17,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:17,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:17,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:17,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:17,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:17,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:17,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:17,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:17,643 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 23:02:17,679 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:17,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:17,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:17,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:17,686 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:17,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:17,686 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:17,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:17,687 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:17,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:17,688 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:17,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:17,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:17,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:17,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:17,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:17,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:17,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:17,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:17,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:17,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:17,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:17,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:17,693 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 23:02:17,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:18,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:18,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:18,018 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:18,019 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:18,019 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2019-10-13 23:02:18,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2ab6c0d9/755716c15eef42cea76bba317b831d21/FLAGe4e6684fc [2019-10-13 23:02:18,778 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:18,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2019-10-13 23:02:18,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2ab6c0d9/755716c15eef42cea76bba317b831d21/FLAGe4e6684fc [2019-10-13 23:02:18,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2ab6c0d9/755716c15eef42cea76bba317b831d21 [2019-10-13 23:02:18,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:18,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:18,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:18,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:18,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:18,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:18" (1/1) ... [2019-10-13 23:02:18,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:18, skipping insertion in model container [2019-10-13 23:02:18,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:18" (1/1) ... [2019-10-13 23:02:18,993 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:19,079 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:19,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:19,864 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:20,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:20,149 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:20,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20 WrapperNode [2019-10-13 23:02:20,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:20,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:20,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:20,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:20,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (1/1) ... [2019-10-13 23:02:20,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:20,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:20,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:20,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:20,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (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 23:02:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:20,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:20,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:20,481 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:20,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:20,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:20,482 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:20,483 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:20,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:20,487 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:20,490 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:20,490 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:20,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:20,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:20,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:20,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:20,491 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:20,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:20,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:20,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:20,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:20,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:20,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:02:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:25,435 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:25,436 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:25,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:25 BoogieIcfgContainer [2019-10-13 23:02:25,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:25,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:25,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:25,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:25,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:18" (1/3) ... [2019-10-13 23:02:25,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d335307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:25, skipping insertion in model container [2019-10-13 23:02:25,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:20" (2/3) ... [2019-10-13 23:02:25,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d335307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:25, skipping insertion in model container [2019-10-13 23:02:25,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:25" (3/3) ... [2019-10-13 23:02:25,447 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2019-10-13 23:02:25,456 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:25,465 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:25,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:25,514 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:25,514 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:25,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:25,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:25,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:25,514 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:25,514 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:25,515 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states. [2019-10-13 23:02:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:02:25,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:25,580 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:25,584 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:25,589 INFO L82 PathProgramCache]: Analyzing trace with hash -809539187, now seen corresponding path program 1 times [2019-10-13 23:02:25,599 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:25,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162073733] [2019-10-13 23:02:25,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:26,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162073733] [2019-10-13 23:02:26,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:26,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:26,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226657454] [2019-10-13 23:02:26,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:26,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:26,349 INFO L87 Difference]: Start difference. First operand 528 states. Second operand 5 states. [2019-10-13 23:02:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:27,278 INFO L93 Difference]: Finished difference Result 1186 states and 1810 transitions. [2019-10-13 23:02:27,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:27,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-10-13 23:02:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:27,305 INFO L225 Difference]: With dead ends: 1186 [2019-10-13 23:02:27,306 INFO L226 Difference]: Without dead ends: 780 [2019-10-13 23:02:27,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2019-10-13 23:02:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 773. [2019-10-13 23:02:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-10-13 23:02:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1170 transitions. [2019-10-13 23:02:27,540 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1170 transitions. Word has length 110 [2019-10-13 23:02:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:27,542 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 1170 transitions. [2019-10-13 23:02:27,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1170 transitions. [2019-10-13 23:02:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 23:02:27,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:27,553 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:27,554 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1987540519, now seen corresponding path program 1 times [2019-10-13 23:02:27,555 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:27,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151373005] [2019-10-13 23:02:27,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:27,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:27,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:27,915 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151373005] [2019-10-13 23:02:27,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:27,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:27,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091900869] [2019-10-13 23:02:27,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:27,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:27,926 INFO L87 Difference]: Start difference. First operand 773 states and 1170 transitions. Second operand 7 states. [2019-10-13 23:02:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:29,069 INFO L93 Difference]: Finished difference Result 905 states and 1332 transitions. [2019-10-13 23:02:29,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:29,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-10-13 23:02:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:29,083 INFO L225 Difference]: With dead ends: 905 [2019-10-13 23:02:29,084 INFO L226 Difference]: Without dead ends: 902 [2019-10-13 23:02:29,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-13 23:02:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 894. [2019-10-13 23:02:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2019-10-13 23:02:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1320 transitions. [2019-10-13 23:02:29,242 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1320 transitions. Word has length 114 [2019-10-13 23:02:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:29,248 INFO L462 AbstractCegarLoop]: Abstraction has 894 states and 1320 transitions. [2019-10-13 23:02:29,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1320 transitions. [2019-10-13 23:02:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:29,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:29,259 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1] [2019-10-13 23:02:29,259 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash 388765723, now seen corresponding path program 1 times [2019-10-13 23:02:29,260 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:29,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002937638] [2019-10-13 23:02:29,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:29,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:29,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 23:02:29,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002937638] [2019-10-13 23:02:29,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:29,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:29,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051443785] [2019-10-13 23:02:29,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:29,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:29,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:29,467 INFO L87 Difference]: Start difference. First operand 894 states and 1320 transitions. Second operand 5 states. [2019-10-13 23:02:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:29,538 INFO L93 Difference]: Finished difference Result 1767 states and 2627 transitions. [2019-10-13 23:02:29,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:29,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 23:02:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:29,548 INFO L225 Difference]: With dead ends: 1767 [2019-10-13 23:02:29,548 INFO L226 Difference]: Without dead ends: 904 [2019-10-13 23:02:29,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2019-10-13 23:02:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2019-10-13 23:02:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2019-10-13 23:02:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1330 transitions. [2019-10-13 23:02:29,620 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1330 transitions. Word has length 150 [2019-10-13 23:02:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:29,621 INFO L462 AbstractCegarLoop]: Abstraction has 904 states and 1330 transitions. [2019-10-13 23:02:29,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1330 transitions. [2019-10-13 23:02:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 23:02:29,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:29,628 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:29,628 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:29,629 INFO L82 PathProgramCache]: Analyzing trace with hash -146539075, now seen corresponding path program 1 times [2019-10-13 23:02:29,629 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:29,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69499676] [2019-10-13 23:02:29,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:29,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:29,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:02:29,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69499676] [2019-10-13 23:02:29,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970684438] [2019-10-13 23:02:29,854 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 23:02:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:30,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:30,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:02:30,653 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:02:30,859 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:30,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:02:30,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865506381] [2019-10-13 23:02:30,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:30,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:30,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:30,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:30,861 INFO L87 Difference]: Start difference. First operand 904 states and 1330 transitions. Second operand 4 states. [2019-10-13 23:02:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:31,120 INFO L93 Difference]: Finished difference Result 1855 states and 2793 transitions. [2019-10-13 23:02:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:31,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-13 23:02:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:31,130 INFO L225 Difference]: With dead ends: 1855 [2019-10-13 23:02:31,130 INFO L226 Difference]: Without dead ends: 982 [2019-10-13 23:02:31,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-10-13 23:02:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2019-10-13 23:02:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2019-10-13 23:02:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1476 transitions. [2019-10-13 23:02:31,195 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1476 transitions. Word has length 155 [2019-10-13 23:02:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:31,196 INFO L462 AbstractCegarLoop]: Abstraction has 982 states and 1476 transitions. [2019-10-13 23:02:31,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1476 transitions. [2019-10-13 23:02:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:02:31,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:31,203 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:31,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:31,422 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1347898747, now seen corresponding path program 1 times [2019-10-13 23:02:31,423 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:31,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436541356] [2019-10-13 23:02:31,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:31,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:31,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 23:02:31,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436541356] [2019-10-13 23:02:31,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738123098] [2019-10-13 23:02:31,608 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 23:02:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:32,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:32,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 23:02:32,374 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 23:02:32,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:32,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:32,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561481318] [2019-10-13 23:02:32,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:32,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:32,581 INFO L87 Difference]: Start difference. First operand 982 states and 1476 transitions. Second operand 4 states. [2019-10-13 23:02:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:32,840 INFO L93 Difference]: Finished difference Result 2011 states and 3083 transitions. [2019-10-13 23:02:32,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:32,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-13 23:02:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:32,865 INFO L225 Difference]: With dead ends: 2011 [2019-10-13 23:02:32,865 INFO L226 Difference]: Without dead ends: 1060 [2019-10-13 23:02:32,872 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-10-13 23:02:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2019-10-13 23:02:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-13 23:02:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1622 transitions. [2019-10-13 23:02:32,927 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1622 transitions. Word has length 160 [2019-10-13 23:02:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:32,927 INFO L462 AbstractCegarLoop]: Abstraction has 1060 states and 1622 transitions. [2019-10-13 23:02:32,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1622 transitions. [2019-10-13 23:02:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 23:02:32,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:32,936 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:33,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:33,147 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1791595061, now seen corresponding path program 1 times [2019-10-13 23:02:33,148 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:33,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091640878] [2019-10-13 23:02:33,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-13 23:02:33,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091640878] [2019-10-13 23:02:33,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383061199] [2019-10-13 23:02:33,445 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 23:02:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:34,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:34,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:02:34,102 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-13 23:02:34,280 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:34,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:34,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838210746] [2019-10-13 23:02:34,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:34,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:34,283 INFO L87 Difference]: Start difference. First operand 1060 states and 1622 transitions. Second operand 4 states. [2019-10-13 23:02:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:34,514 INFO L93 Difference]: Finished difference Result 2167 states and 3373 transitions. [2019-10-13 23:02:34,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:34,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-13 23:02:34,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:34,526 INFO L225 Difference]: With dead ends: 2167 [2019-10-13 23:02:34,526 INFO L226 Difference]: Without dead ends: 1138 [2019-10-13 23:02:34,532 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2019-10-13 23:02:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2019-10-13 23:02:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-13 23:02:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1768 transitions. [2019-10-13 23:02:34,612 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1768 transitions. Word has length 164 [2019-10-13 23:02:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:34,613 INFO L462 AbstractCegarLoop]: Abstraction has 1138 states and 1768 transitions. [2019-10-13 23:02:34,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1768 transitions. [2019-10-13 23:02:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 23:02:34,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:34,621 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:34,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:34,840 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:34,841 INFO L82 PathProgramCache]: Analyzing trace with hash 767809565, now seen corresponding path program 1 times [2019-10-13 23:02:34,841 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:34,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854324931] [2019-10-13 23:02:34,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:35,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854324931] [2019-10-13 23:02:35,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775723853] [2019-10-13 23:02:35,209 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 23:02:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:35,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:02:35,772 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:35,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:35,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:35,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167247455] [2019-10-13 23:02:35,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:35,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:35,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:35,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:35,934 INFO L87 Difference]: Start difference. First operand 1138 states and 1768 transitions. Second operand 4 states. [2019-10-13 23:02:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,177 INFO L93 Difference]: Finished difference Result 2323 states and 3663 transitions. [2019-10-13 23:02:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:36,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-13 23:02:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:36,187 INFO L225 Difference]: With dead ends: 2323 [2019-10-13 23:02:36,187 INFO L226 Difference]: Without dead ends: 1216 [2019-10-13 23:02:36,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-10-13 23:02:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2019-10-13 23:02:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-10-13 23:02:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1914 transitions. [2019-10-13 23:02:36,259 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1914 transitions. Word has length 167 [2019-10-13 23:02:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:36,260 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1914 transitions. [2019-10-13 23:02:36,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1914 transitions. [2019-10-13 23:02:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 23:02:36,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:36,266 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:36,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:36,483 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 455444397, now seen corresponding path program 1 times [2019-10-13 23:02:36,484 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:36,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396086594] [2019-10-13 23:02:36,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:36,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396086594] [2019-10-13 23:02:36,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:36,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:02:36,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261506820] [2019-10-13 23:02:36,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:36,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:36,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:02:36,722 INFO L87 Difference]: Start difference. First operand 1216 states and 1914 transitions. Second operand 4 states. [2019-10-13 23:02:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:37,008 INFO L93 Difference]: Finished difference Result 2485 states and 3951 transitions. [2019-10-13 23:02:37,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:37,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-13 23:02:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,019 INFO L225 Difference]: With dead ends: 2485 [2019-10-13 23:02:37,019 INFO L226 Difference]: Without dead ends: 1284 [2019-10-13 23:02:37,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2019-10-13 23:02:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2019-10-13 23:02:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2019-10-13 23:02:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1950 transitions. [2019-10-13 23:02:37,088 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1950 transitions. Word has length 169 [2019-10-13 23:02:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,089 INFO L462 AbstractCegarLoop]: Abstraction has 1284 states and 1950 transitions. [2019-10-13 23:02:37,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1950 transitions. [2019-10-13 23:02:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 23:02:37,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,096 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:37,096 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1600185500, now seen corresponding path program 1 times [2019-10-13 23:02:37,097 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186029676] [2019-10-13 23:02:37,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:37,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186029676] [2019-10-13 23:02:37,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:37,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:37,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138723816] [2019-10-13 23:02:37,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:37,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:37,310 INFO L87 Difference]: Start difference. First operand 1284 states and 1950 transitions. Second operand 7 states. [2019-10-13 23:02:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:38,392 INFO L93 Difference]: Finished difference Result 2733 states and 4190 transitions. [2019-10-13 23:02:38,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:02:38,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2019-10-13 23:02:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:38,403 INFO L225 Difference]: With dead ends: 2733 [2019-10-13 23:02:38,404 INFO L226 Difference]: Without dead ends: 1237 [2019-10-13 23:02:38,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:02:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2019-10-13 23:02:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1221. [2019-10-13 23:02:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2019-10-13 23:02:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1770 transitions. [2019-10-13 23:02:38,486 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1770 transitions. Word has length 169 [2019-10-13 23:02:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:38,487 INFO L462 AbstractCegarLoop]: Abstraction has 1221 states and 1770 transitions. [2019-10-13 23:02:38,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1770 transitions. [2019-10-13 23:02:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 23:02:38,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:38,493 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:38,493 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:38,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1763584325, now seen corresponding path program 1 times [2019-10-13 23:02:38,494 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:38,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856042044] [2019-10-13 23:02:38,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:38,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:38,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:40,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856042044] [2019-10-13 23:02:40,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123254124] [2019-10-13 23:02:40,632 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 23:02:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 74 conjunts are in the unsatisfiable core [2019-10-13 23:02:41,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:42,866 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-10-13 23:02:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-13 23:02:43,263 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:43,727 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:02:43,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:43,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:43,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:43,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:02:43,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:43,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:44,385 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2019-10-13 23:02:45,150 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:02:45,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:02:45,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms