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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:20:03,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:20:03,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:20:03,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:20:03,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:20:03,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:20:03,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:20:03,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:20:03,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:20:03,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:20:03,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:20:03,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:20:03,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:20:03,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:20:03,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:20:03,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:20:03,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:20:03,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:20:03,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:20:03,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:20:03,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:20:03,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:20:03,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:20:03,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:20:03,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:20:03,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:20:03,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:20:03,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:20:03,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:20:03,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:20:03,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:20:03,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:20:03,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:20:03,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:20:03,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:20:03,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:20:03,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:20:03,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:20:03,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:20:03,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:20:03,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:20:03,608 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 [2019-10-14 23:20:03,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:20:03,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:20:03,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:20:03,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:20:03,639 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:20:03,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:20:03,639 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:20:03,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:20:03,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:20:03,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:20:03,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:20:03,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:20:03,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:20:03,641 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:20:03,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:20:03,641 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:20:03,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:20:03,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:20:03,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:20:03,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:20:03,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:20:03,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:03,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:20:03,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:20:03,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:20:03,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:20:03,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:20:03,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:20:03,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:20:03,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:20:03,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:20:03,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:20:03,955 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:20:03,955 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:20:03,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-14 23:20:04,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8e922e7/f6c6f59d874e4e4cad49018f3c4a3607/FLAGa59d5195e [2019-10-14 23:20:04,749 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:20:04,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-14 23:20:04,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8e922e7/f6c6f59d874e4e4cad49018f3c4a3607/FLAGa59d5195e [2019-10-14 23:20:04,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8e922e7/f6c6f59d874e4e4cad49018f3c4a3607 [2019-10-14 23:20:04,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:20:04,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:20:04,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:04,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:20:04,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:20:04,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4e00a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04, skipping insertion in model container [2019-10-14 23:20:04,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,872 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:20:04,950 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:20:05,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:05,645 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:20:05,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:05,821 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:20:05,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05 WrapperNode [2019-10-14 23:20:05,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:05,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:20:05,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:20:05,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:20:05,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:05,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (1/1) ... [2019-10-14 23:20:06,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:20:06,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:20:06,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:20:06,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:20:06,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (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 [2019-10-14 23:20:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:20:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:20:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:20:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:20:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:20:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:20:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:20:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:20:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:20:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:20:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:20:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:20:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:20:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:20:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:20:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:20:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:20:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:20:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:20:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:20:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:20:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:20:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:20:06,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:20:06,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:20:06,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:20:06,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:20:06,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:20:06,136 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:20:06,136 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:20:06,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:20:06,136 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:20:06,137 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:20:06,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:20:06,137 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:20:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:20:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:20:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:20:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:20:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:20:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:20:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:20:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:20:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:20:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:20:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:20:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:20:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:20:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:20:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:20:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:20:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:20:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:20:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:20:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:20:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:20:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:20:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:20:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:20:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:20:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:20:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:20:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:20:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:20:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:20:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:20:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:20:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:20:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:20:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:20:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:20:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:20:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:20:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:20:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:20:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:20:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:20:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:20:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:20:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:20:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:20:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:20:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:20:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:20:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:20:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:20:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:20:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:20:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:20:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:20:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:20:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:20:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:20:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:20:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:20:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:20:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:20:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:20:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:20:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:20:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:20:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:20:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:20:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:20:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:20:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:20:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:20:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:20:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:20:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:20:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:20:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:20:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:20:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:20:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:20:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:20:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:20:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:20:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-14 23:20:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:20:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:20:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:08,603 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:08,604 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:08,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:08 BoogieIcfgContainer [2019-10-14 23:20:08,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:08,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:08,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:08,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:08,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:04" (1/3) ... [2019-10-14 23:20:08,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:08, skipping insertion in model container [2019-10-14 23:20:08,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:05" (2/3) ... [2019-10-14 23:20:08,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:08, skipping insertion in model container [2019-10-14 23:20:08,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:08" (3/3) ... [2019-10-14 23:20:08,615 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2019-10-14 23:20:08,625 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:08,634 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:08,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:08,693 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:08,693 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:08,693 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:08,693 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:08,693 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:08,693 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:08,694 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:08,694 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states. [2019-10-14 23:20:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-14 23:20:08,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:08,759 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:08,763 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:08,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1141636338, now seen corresponding path program 1 times [2019-10-14 23:20:08,780 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:08,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615938630] [2019-10-14 23:20:08,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:08,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:08,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,350 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,653 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,861 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:11,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615938630] [2019-10-14 23:20:11,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307999675] [2019-10-14 23:20:11,464 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 [2019-10-14 23:20:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:12,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 23:20:12,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:12,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-14 23:20:12,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775971545] [2019-10-14 23:20:12,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:12,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:12,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:12,213 INFO L87 Difference]: Start difference. First operand 787 states. Second operand 2 states. [2019-10-14 23:20:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:12,319 INFO L93 Difference]: Finished difference Result 670 states and 1061 transitions. [2019-10-14 23:20:12,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:12,320 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-14 23:20:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:12,365 INFO L225 Difference]: With dead ends: 670 [2019-10-14 23:20:12,365 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 23:20:12,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 23:20:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-14 23:20:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-14 23:20:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1006 transitions. [2019-10-14 23:20:12,481 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1006 transitions. Word has length 164 [2019-10-14 23:20:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:12,485 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1006 transitions. [2019-10-14 23:20:12,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1006 transitions. [2019-10-14 23:20:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-14 23:20:12,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:12,498 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:12,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:12,706 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash -54443263, now seen corresponding path program 1 times [2019-10-14 23:20:12,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:12,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219377805] [2019-10-14 23:20:12,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:12,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:12,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,889 WARN L191 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,147 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,397 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:14,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219377805] [2019-10-14 23:20:14,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878869820] [2019-10-14 23:20:14,762 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 [2019-10-14 23:20:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:15,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:20:15,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:15,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:15,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795905632] [2019-10-14 23:20:15,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:15,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:15,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:15,455 INFO L87 Difference]: Start difference. First operand 633 states and 1006 transitions. Second operand 4 states. [2019-10-14 23:20:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:15,603 INFO L93 Difference]: Finished difference Result 1238 states and 1985 transitions. [2019-10-14 23:20:15,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:15,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-14 23:20:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:15,613 INFO L225 Difference]: With dead ends: 1238 [2019-10-14 23:20:15,613 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 23:20:15,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 23:20:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-14 23:20:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-14 23:20:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1005 transitions. [2019-10-14 23:20:15,692 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1005 transitions. Word has length 166 [2019-10-14 23:20:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:15,694 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1005 transitions. [2019-10-14 23:20:15,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1005 transitions. [2019-10-14 23:20:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-14 23:20:15,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:15,718 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:15,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:15,920 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:15,921 INFO L82 PathProgramCache]: Analyzing trace with hash 41360599, now seen corresponding path program 1 times [2019-10-14 23:20:15,921 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:15,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532440722] [2019-10-14 23:20:15,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:15,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:15,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,903 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,152 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,321 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:17,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532440722] [2019-10-14 23:20:17,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478255371] [2019-10-14 23:20:17,612 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 [2019-10-14 23:20:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:18,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:20:18,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:18,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:18,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112793111] [2019-10-14 23:20:18,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:18,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:18,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:18,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:18,346 INFO L87 Difference]: Start difference. First operand 633 states and 1005 transitions. Second operand 4 states. [2019-10-14 23:20:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:18,444 INFO L93 Difference]: Finished difference Result 1238 states and 1983 transitions. [2019-10-14 23:20:18,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:18,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-14 23:20:18,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:18,453 INFO L225 Difference]: With dead ends: 1238 [2019-10-14 23:20:18,454 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 23:20:18,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 23:20:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-14 23:20:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-14 23:20:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1004 transitions. [2019-10-14 23:20:18,496 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1004 transitions. Word has length 168 [2019-10-14 23:20:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:18,497 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1004 transitions. [2019-10-14 23:20:18,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1004 transitions. [2019-10-14 23:20:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-14 23:20:18,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:18,505 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:18,714 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:18,714 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:18,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1984965257, now seen corresponding path program 1 times [2019-10-14 23:20:18,715 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:18,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893412610] [2019-10-14 23:20:18,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:18,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:18,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,684 WARN L191 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,952 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,146 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:20,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893412610] [2019-10-14 23:20:20,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465702013] [2019-10-14 23:20:20,480 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 [2019-10-14 23:20:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:21,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:20:21,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:21,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:21,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741774395] [2019-10-14 23:20:21,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:21,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:21,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:21,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:21,152 INFO L87 Difference]: Start difference. First operand 633 states and 1004 transitions. Second operand 4 states. [2019-10-14 23:20:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:21,243 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-10-14 23:20:21,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:21,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-14 23:20:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:21,249 INFO L225 Difference]: With dead ends: 1245 [2019-10-14 23:20:21,250 INFO L226 Difference]: Without dead ends: 642 [2019-10-14 23:20:21,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-14 23:20:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-14 23:20:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-14 23:20:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1016 transitions. [2019-10-14 23:20:21,279 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1016 transitions. Word has length 170 [2019-10-14 23:20:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:21,279 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1016 transitions. [2019-10-14 23:20:21,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1016 transitions. [2019-10-14 23:20:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-14 23:20:21,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:21,285 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:21,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:21,493 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1663399092, now seen corresponding path program 1 times [2019-10-14 23:20:21,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:21,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602097406] [2019-10-14 23:20:21,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:21,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:21,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,503 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,776 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,941 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:23,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602097406] [2019-10-14 23:20:23,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303609944] [2019-10-14 23:20:23,417 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 [2019-10-14 23:20:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:24,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:20:24,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:24,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:24,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211803026] [2019-10-14 23:20:24,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:24,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:24,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:24,086 INFO L87 Difference]: Start difference. First operand 642 states and 1016 transitions. Second operand 4 states. [2019-10-14 23:20:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:24,167 INFO L93 Difference]: Finished difference Result 1247 states and 1991 transitions. [2019-10-14 23:20:24,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:24,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-14 23:20:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:24,175 INFO L225 Difference]: With dead ends: 1247 [2019-10-14 23:20:24,175 INFO L226 Difference]: Without dead ends: 642 [2019-10-14 23:20:24,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-14 23:20:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-14 23:20:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-14 23:20:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1015 transitions. [2019-10-14 23:20:24,212 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1015 transitions. Word has length 171 [2019-10-14 23:20:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:24,212 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1015 transitions. [2019-10-14 23:20:24,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1015 transitions. [2019-10-14 23:20:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-14 23:20:24,220 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:24,221 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:24,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:24,440 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:24,440 INFO L82 PathProgramCache]: Analyzing trace with hash 424078317, now seen corresponding path program 1 times [2019-10-14 23:20:24,441 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:24,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843070522] [2019-10-14 23:20:24,441 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:24,441 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:24,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,579 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,841 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,020 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:20:26,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843070522] [2019-10-14 23:20:26,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667442795] [2019-10-14 23:20:26,630 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 [2019-10-14 23:20:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:27,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:20:27,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:27,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:27,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292140852] [2019-10-14 23:20:27,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:27,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:27,304 INFO L87 Difference]: Start difference. First operand 642 states and 1015 transitions. Second operand 4 states. [2019-10-14 23:20:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:27,387 INFO L93 Difference]: Finished difference Result 1247 states and 1990 transitions. [2019-10-14 23:20:27,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:27,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-14 23:20:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:27,395 INFO L225 Difference]: With dead ends: 1247 [2019-10-14 23:20:27,395 INFO L226 Difference]: Without dead ends: 642 [2019-10-14 23:20:27,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-14 23:20:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-14 23:20:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-14 23:20:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-10-14 23:20:27,423 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 172 [2019-10-14 23:20:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:27,424 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-10-14 23:20:27,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-10-14 23:20:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-14 23:20:27,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:27,429 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:27,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:27,645 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:27,646 INFO L82 PathProgramCache]: Analyzing trace with hash 799135704, now seen corresponding path program 1 times [2019-10-14 23:20:27,646 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:27,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996795234] [2019-10-14 23:20:27,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:27,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:27,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,584 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,903 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,087 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:20:29,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996795234] [2019-10-14 23:20:29,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596517565] [2019-10-14 23:20:29,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:30,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:20:30,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:30,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:20:30,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347120506] [2019-10-14 23:20:30,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:30,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:30,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:30,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:30,299 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-10-14 23:20:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:30,481 INFO L93 Difference]: Finished difference Result 1246 states and 1990 transitions. [2019-10-14 23:20:30,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:30,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-14 23:20:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:30,490 INFO L225 Difference]: With dead ends: 1246 [2019-10-14 23:20:30,491 INFO L226 Difference]: Without dead ends: 642 [2019-10-14 23:20:30,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:20:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-14 23:20:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-14 23:20:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-14 23:20:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1009 transitions. [2019-10-14 23:20:30,529 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1009 transitions. Word has length 173 [2019-10-14 23:20:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:30,529 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1009 transitions. [2019-10-14 23:20:30,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1009 transitions. [2019-10-14 23:20:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-14 23:20:30,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:30,538 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:30,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:30,748 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:30,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:30,749 INFO L82 PathProgramCache]: Analyzing trace with hash 524690856, now seen corresponding path program 1 times [2019-10-14 23:20:30,749 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:30,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268713632] [2019-10-14 23:20:30,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:30,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:30,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,988 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,360 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,612 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:20:33,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268713632] [2019-10-14 23:20:33,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872394255] [2019-10-14 23:20:33,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:33,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:20:33,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:33,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2019-10-14 23:20:33,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095776044] [2019-10-14 23:20:33,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:33,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:33,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:20:33,662 INFO L87 Difference]: Start difference. First operand 642 states and 1009 transitions. Second operand 4 states. [2019-10-14 23:20:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:33,841 INFO L93 Difference]: Finished difference Result 1246 states and 1980 transitions. [2019-10-14 23:20:33,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:33,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-14 23:20:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:33,850 INFO L225 Difference]: With dead ends: 1246 [2019-10-14 23:20:33,850 INFO L226 Difference]: Without dead ends: 642 [2019-10-14 23:20:33,853 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:20:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-14 23:20:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-14 23:20:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-14 23:20:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1004 transitions. [2019-10-14 23:20:33,875 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1004 transitions. Word has length 175 [2019-10-14 23:20:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:33,876 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1004 transitions. [2019-10-14 23:20:33,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1004 transitions. [2019-10-14 23:20:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-14 23:20:33,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:33,884 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:34,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:34,092 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash 493279630, now seen corresponding path program 1 times [2019-10-14 23:20:34,094 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:34,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860055456] [2019-10-14 23:20:34,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:34,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:34,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,068 WARN L191 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,450 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,645 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 23:20:36,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860055456] [2019-10-14 23:20:36,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742268954] [2019-10-14 23:20:36,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:36,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:20:36,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:37,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2019-10-14 23:20:37,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656410703] [2019-10-14 23:20:37,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:37,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:37,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:37,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:20:37,001 INFO L87 Difference]: Start difference. First operand 642 states and 1004 transitions. Second operand 4 states. [2019-10-14 23:20:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:37,251 INFO L93 Difference]: Finished difference Result 1282 states and 2029 transitions. [2019-10-14 23:20:37,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:37,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-14 23:20:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:37,257 INFO L225 Difference]: With dead ends: 1282 [2019-10-14 23:20:37,257 INFO L226 Difference]: Without dead ends: 681 [2019-10-14 23:20:37,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:20:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-10-14 23:20:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2019-10-14 23:20:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-10-14 23:20:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1068 transitions. [2019-10-14 23:20:37,284 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1068 transitions. Word has length 177 [2019-10-14 23:20:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:37,284 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 1068 transitions. [2019-10-14 23:20:37,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1068 transitions. [2019-10-14 23:20:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-14 23:20:37,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:37,290 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:37,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:37,499 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:37,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1246954601, now seen corresponding path program 1 times [2019-10-14 23:20:37,500 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:37,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611297791] [2019-10-14 23:20:37,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:37,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:37,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,496 WARN L191 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-14 23:20:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat