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_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:39,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:39,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:39,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:39,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:39,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:39,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:39,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:39,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:39,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:39,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:39,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:39,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:39,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:39,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:39,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:39,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:39,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:39,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:39,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:39,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:39,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:39,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:39,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:39,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:39,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:39,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:39,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:39,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:39,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:39,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:39,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:39,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:39,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:39,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:39,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:39,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:39,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:39,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:39,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:39,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:39,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:08:39,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:39,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:39,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:39,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:39,772 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:39,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:39,772 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:39,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:39,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:39,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:39,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:39,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:39,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:39,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:39,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:39,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:39,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:39,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:39,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:39,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:39,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:39,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:39,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:39,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:39,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:39,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:39,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:39,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:39,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:08:40,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:40,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:40,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:40,153 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:40,153 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:40,154 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2019-10-15 03:08:40,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893d9619/153e8041dbba47889c8be0b9d67db8a1/FLAGea8d11148 [2019-10-15 03:08:40,968 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:40,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2019-10-15 03:08:40,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893d9619/153e8041dbba47889c8be0b9d67db8a1/FLAGea8d11148 [2019-10-15 03:08:41,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893d9619/153e8041dbba47889c8be0b9d67db8a1 [2019-10-15 03:08:41,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:41,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:41,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:41,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:41,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:41,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:41" (1/1) ... [2019-10-15 03:08:41,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba0ecdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:41, skipping insertion in model container [2019-10-15 03:08:41,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:41" (1/1) ... [2019-10-15 03:08:41,159 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:41,251 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:42,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:42,113 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:42,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:42,337 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:42,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42 WrapperNode [2019-10-15 03:08:42,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:42,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:42,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:42,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:42,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... [2019-10-15 03:08:42,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:42,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:42,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:42,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:42,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:08:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:08:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:42,674 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:42,675 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:08:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:08:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:42,706 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:48,289 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:48,289 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:48,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:48 BoogieIcfgContainer [2019-10-15 03:08:48,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:48,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:48,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:48,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:48,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:41" (1/3) ... [2019-10-15 03:08:48,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6614c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:48, skipping insertion in model container [2019-10-15 03:08:48,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:42" (2/3) ... [2019-10-15 03:08:48,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6614c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:48, skipping insertion in model container [2019-10-15 03:08:48,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:48" (3/3) ... [2019-10-15 03:08:48,375 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2019-10-15 03:08:48,387 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:48,398 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:48,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:48,468 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:48,468 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:48,468 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:48,468 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:48,468 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:48,469 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:48,469 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:48,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states. [2019-10-15 03:08:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:08:48,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:48,536 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:48,538 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2102671491, now seen corresponding path program 1 times [2019-10-15 03:08:48,553 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:48,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173527989] [2019-10-15 03:08:48,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:48,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:48,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:49,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173527989] [2019-10-15 03:08:49,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:49,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:49,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512354583] [2019-10-15 03:08:49,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:49,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:49,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:49,378 INFO L87 Difference]: Start difference. First operand 554 states. Second operand 8 states. [2019-10-15 03:08:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:49,681 INFO L93 Difference]: Finished difference Result 841 states and 1303 transitions. [2019-10-15 03:08:49,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:49,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-10-15 03:08:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:49,725 INFO L225 Difference]: With dead ends: 841 [2019-10-15 03:08:49,726 INFO L226 Difference]: Without dead ends: 429 [2019-10-15 03:08:49,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-15 03:08:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2019-10-15 03:08:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-15 03:08:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 645 transitions. [2019-10-15 03:08:49,847 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 645 transitions. Word has length 99 [2019-10-15 03:08:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:49,848 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 645 transitions. [2019-10-15 03:08:49,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 645 transitions. [2019-10-15 03:08:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 03:08:49,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:49,857 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:49,857 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1636883222, now seen corresponding path program 1 times [2019-10-15 03:08:49,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:49,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111240705] [2019-10-15 03:08:49,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:08:50,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111240705] [2019-10-15 03:08:50,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703208407] [2019-10-15 03:08:50,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:50,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:08:50,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:51,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:51,339 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:51,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-15 03:08:51,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560867116] [2019-10-15 03:08:51,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:51,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:51,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:08:51,346 INFO L87 Difference]: Start difference. First operand 426 states and 645 transitions. Second operand 5 states. [2019-10-15 03:08:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:53,852 INFO L93 Difference]: Finished difference Result 1566 states and 2425 transitions. [2019-10-15 03:08:53,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:53,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-10-15 03:08:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:53,866 INFO L225 Difference]: With dead ends: 1566 [2019-10-15 03:08:53,866 INFO L226 Difference]: Without dead ends: 1171 [2019-10-15 03:08:53,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:08:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-15 03:08:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1159. [2019-10-15 03:08:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2019-10-15 03:08:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1743 transitions. [2019-10-15 03:08:53,999 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1743 transitions. Word has length 103 [2019-10-15 03:08:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:54,002 INFO L462 AbstractCegarLoop]: Abstraction has 1159 states and 1743 transitions. [2019-10-15 03:08:54,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1743 transitions. [2019-10-15 03:08:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:08:54,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:54,010 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:54,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:54,221 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash 27946490, now seen corresponding path program 1 times [2019-10-15 03:08:54,225 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:54,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748187603] [2019-10-15 03:08:54,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:08:54,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748187603] [2019-10-15 03:08:54,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821356497] [2019-10-15 03:08:54,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:55,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:08:55,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:55,418 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:55,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:08:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:55,810 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:55,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-15 03:08:55,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603192141] [2019-10-15 03:08:55,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:55,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:55,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:55,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:55,813 INFO L87 Difference]: Start difference. First operand 1159 states and 1743 transitions. Second operand 7 states. [2019-10-15 03:08:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:56,924 INFO L93 Difference]: Finished difference Result 2127 states and 3217 transitions. [2019-10-15 03:08:56,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:56,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-15 03:08:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:56,937 INFO L225 Difference]: With dead ends: 2127 [2019-10-15 03:08:56,937 INFO L226 Difference]: Without dead ends: 1282 [2019-10-15 03:08:56,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:08:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-15 03:08:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1231. [2019-10-15 03:08:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2019-10-15 03:08:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1843 transitions. [2019-10-15 03:08:57,025 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1843 transitions. Word has length 107 [2019-10-15 03:08:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:57,026 INFO L462 AbstractCegarLoop]: Abstraction has 1231 states and 1843 transitions. [2019-10-15 03:08:57,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1843 transitions. [2019-10-15 03:08:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:08:57,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:57,028 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:57,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:57,246 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:57,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1106744652, now seen corresponding path program 1 times [2019-10-15 03:08:57,247 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:57,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494258052] [2019-10-15 03:08:57,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:08:57,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494258052] [2019-10-15 03:08:57,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396475289] [2019-10-15 03:08:57,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:57,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:08:58,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:58,065 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:58,272 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:58,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-15 03:08:58,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452778166] [2019-10-15 03:08:58,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:58,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:58,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:08:58,275 INFO L87 Difference]: Start difference. First operand 1231 states and 1843 transitions. Second operand 5 states. [2019-10-15 03:08:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:58,602 INFO L93 Difference]: Finished difference Result 2296 states and 3493 transitions. [2019-10-15 03:08:58,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:08:58,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-15 03:08:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:58,614 INFO L225 Difference]: With dead ends: 2296 [2019-10-15 03:08:58,615 INFO L226 Difference]: Without dead ends: 1231 [2019-10-15 03:08:58,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:08:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-10-15 03:08:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2019-10-15 03:08:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2019-10-15 03:08:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1822 transitions. [2019-10-15 03:08:58,686 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1822 transitions. Word has length 108 [2019-10-15 03:08:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:58,687 INFO L462 AbstractCegarLoop]: Abstraction has 1231 states and 1822 transitions. [2019-10-15 03:08:58,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1822 transitions. [2019-10-15 03:08:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:08:58,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:58,690 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:58,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:58,899 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:58,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2082142587, now seen corresponding path program 1 times [2019-10-15 03:08:58,900 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:58,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661624916] [2019-10-15 03:08:58,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:58,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:58,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:08:59,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661624916] [2019-10-15 03:08:59,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707179755] [2019-10-15 03:08:59,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:59,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-15 03:08:59,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:59,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:08:59,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:08:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:59,927 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:00,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:00,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:00,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:00,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:00,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2019-10-15 03:09:00,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990110749] [2019-10-15 03:09:00,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:00,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:09:00,501 INFO L87 Difference]: Start difference. First operand 1231 states and 1822 transitions. Second operand 10 states. [2019-10-15 03:09:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:06,716 INFO L93 Difference]: Finished difference Result 2151 states and 3213 transitions. [2019-10-15 03:09:06,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 03:09:06,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2019-10-15 03:09:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:06,745 INFO L225 Difference]: With dead ends: 2151 [2019-10-15 03:09:06,746 INFO L226 Difference]: Without dead ends: 2148 [2019-10-15 03:09:06,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 03:09:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2019-10-15 03:09:06,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2077. [2019-10-15 03:09:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-15 03:09:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3108 transitions. [2019-10-15 03:09:06,905 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3108 transitions. Word has length 110 [2019-10-15 03:09:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:06,906 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 3108 transitions. [2019-10-15 03:09:06,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3108 transitions. [2019-10-15 03:09:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:09:06,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:06,914 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:07,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:07,127 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:07,127 INFO L82 PathProgramCache]: Analyzing trace with hash -662345039, now seen corresponding path program 1 times [2019-10-15 03:09:07,127 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:07,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933407746] [2019-10-15 03:09:07,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:07,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:07,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:07,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933407746] [2019-10-15 03:09:07,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454310091] [2019-10-15 03:09:07,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:08,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:09:08,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:08,094 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:08,180 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:08,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 03:09:08,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760034705] [2019-10-15 03:09:08,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:08,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:08,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:08,182 INFO L87 Difference]: Start difference. First operand 2077 states and 3108 transitions. Second operand 3 states. [2019-10-15 03:09:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:08,463 INFO L93 Difference]: Finished difference Result 5912 states and 9145 transitions. [2019-10-15 03:09:08,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:08,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-15 03:09:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:08,501 INFO L225 Difference]: With dead ends: 5912 [2019-10-15 03:09:08,502 INFO L226 Difference]: Without dead ends: 3866 [2019-10-15 03:09:08,520 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2019-10-15 03:09:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3743. [2019-10-15 03:09:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3743 states. [2019-10-15 03:09:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5637 transitions. [2019-10-15 03:09:08,739 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5637 transitions. Word has length 111 [2019-10-15 03:09:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:08,740 INFO L462 AbstractCegarLoop]: Abstraction has 3743 states and 5637 transitions. [2019-10-15 03:09:08,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5637 transitions. [2019-10-15 03:09:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:09:08,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:08,744 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:08,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:08,957 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:08,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1717081084, now seen corresponding path program 1 times [2019-10-15 03:09:08,958 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:08,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133852037] [2019-10-15 03:09:08,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:08,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:08,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:09,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133852037] [2019-10-15 03:09:09,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:09,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:09,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372430496] [2019-10-15 03:09:09,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:09,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:09,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:09,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:09,213 INFO L87 Difference]: Start difference. First operand 3743 states and 5637 transitions. Second operand 8 states. [2019-10-15 03:09:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:12,644 INFO L93 Difference]: Finished difference Result 10044 states and 15259 transitions. [2019-10-15 03:09:12,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:12,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2019-10-15 03:09:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:12,703 INFO L225 Difference]: With dead ends: 10044 [2019-10-15 03:09:12,704 INFO L226 Difference]: Without dead ends: 6332 [2019-10-15 03:09:12,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2019-10-15 03:09:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6317. [2019-10-15 03:09:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2019-10-15 03:09:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9599 transitions. [2019-10-15 03:09:13,238 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9599 transitions. Word has length 110 [2019-10-15 03:09:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:13,238 INFO L462 AbstractCegarLoop]: Abstraction has 6317 states and 9599 transitions. [2019-10-15 03:09:13,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9599 transitions. [2019-10-15 03:09:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:09:13,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:13,243 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:13,243 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:13,244 INFO L82 PathProgramCache]: Analyzing trace with hash -822865660, now seen corresponding path program 1 times [2019-10-15 03:09:13,244 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:13,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158533682] [2019-10-15 03:09:13,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:13,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:13,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:13,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158533682] [2019-10-15 03:09:13,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267961996] [2019-10-15 03:09:13,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:14,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:14,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:14,608 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:14,770 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:14,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:14,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369290438] [2019-10-15 03:09:14,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:14,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:14,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:14,772 INFO L87 Difference]: Start difference. First operand 6317 states and 9599 transitions. Second operand 3 states. [2019-10-15 03:09:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:15,123 INFO L93 Difference]: Finished difference Result 14365 states and 22296 transitions. [2019-10-15 03:09:15,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:15,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-15 03:09:15,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:15,197 INFO L225 Difference]: With dead ends: 14365 [2019-10-15 03:09:15,198 INFO L226 Difference]: Without dead ends: 8079 [2019-10-15 03:09:15,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8079 states. [2019-10-15 03:09:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8079 to 7863. [2019-10-15 03:09:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7863 states. [2019-10-15 03:09:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 11953 transitions. [2019-10-15 03:09:15,923 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 11953 transitions. Word has length 110 [2019-10-15 03:09:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:15,924 INFO L462 AbstractCegarLoop]: Abstraction has 7863 states and 11953 transitions. [2019-10-15 03:09:15,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 11953 transitions. [2019-10-15 03:09:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:09:15,929 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:15,929 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:16,130 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:16,138 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash -943739269, now seen corresponding path program 1 times [2019-10-15 03:09:16,139 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:16,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75192077] [2019-10-15 03:09:16,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:16,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:16,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat