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_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:41,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:41,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:41,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:41,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:41,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:41,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:41,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:41,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:41,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:41,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:41,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:41,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:41,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:41,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:41,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:41,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:41,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:41,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:41,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:41,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:41,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:41,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:41,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:41,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:41,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:41,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:41,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:41,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:41,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:41,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:41,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:41,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:41,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:41,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:41,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:41,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:41,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:41,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:41,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:41,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:41,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:41,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:41,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:41,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:41,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:41,506 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:41,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:41,507 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:41,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:41,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:41,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:41,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:41,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:41,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:41,509 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:41,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:41,510 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:41,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:41,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:41,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:41,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:41,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:41,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:41,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:41,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:41,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:41,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:41,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:41,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:41,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:41,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:41,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:41,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:41,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:41,813 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:41,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-13 19:19:41,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56a741d6/e051265a629e45dabfd312e6da29ef5f/FLAG606e89f91 [2019-10-13 19:19:42,539 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:42,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-13 19:19:42,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56a741d6/e051265a629e45dabfd312e6da29ef5f/FLAG606e89f91 [2019-10-13 19:19:42,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56a741d6/e051265a629e45dabfd312e6da29ef5f [2019-10-13 19:19:42,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:42,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:42,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:42,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:42,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:42,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:42" (1/1) ... [2019-10-13 19:19:42,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:42, skipping insertion in model container [2019-10-13 19:19:42,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:42" (1/1) ... [2019-10-13 19:19:42,728 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:42,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:43,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:43,536 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:43,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:43,812 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:43,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43 WrapperNode [2019-10-13 19:19:43,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:43,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:43,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:43,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:43,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:44,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:44,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:44,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:44,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:44,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:44,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:19:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 19:19:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:46,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:46,615 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:46,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:46 BoogieIcfgContainer [2019-10-13 19:19:46,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:46,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:46,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:46,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:42" (1/3) ... [2019-10-13 19:19:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f460ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:46, skipping insertion in model container [2019-10-13 19:19:46,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (2/3) ... [2019-10-13 19:19:46,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f460ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:46, skipping insertion in model container [2019-10-13 19:19:46,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:46" (3/3) ... [2019-10-13 19:19:46,629 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2019-10-13 19:19:46,640 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:46,651 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:46,664 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:46,707 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:46,707 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:46,707 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:46,708 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:46,708 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:46,708 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:46,708 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:46,708 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states. [2019-10-13 19:19:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:19:46,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:46,772 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:19:46,774 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1657439968, now seen corresponding path program 1 times [2019-10-13 19:19:46,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:46,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68217137] [2019-10-13 19:19:46,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,479 WARN L191 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:19:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:49,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68217137] [2019-10-13 19:19:49,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991937054] [2019-10-13 19:19:49,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:49,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:49,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:49,700 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-13 19:19:49,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531824098] [2019-10-13 19:19:49,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:49,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:49,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:49,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:49,727 INFO L87 Difference]: Start difference. First operand 823 states. Second operand 4 states. [2019-10-13 19:19:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:49,991 INFO L93 Difference]: Finished difference Result 1347 states and 2176 transitions. [2019-10-13 19:19:49,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:49,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-13 19:19:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:50,037 INFO L225 Difference]: With dead ends: 1347 [2019-10-13 19:19:50,038 INFO L226 Difference]: Without dead ends: 679 [2019-10-13 19:19:50,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-13 19:19:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2019-10-13 19:19:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 19:19:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1076 transitions. [2019-10-13 19:19:50,190 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1076 transitions. Word has length 113 [2019-10-13 19:19:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:50,191 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1076 transitions. [2019-10-13 19:19:50,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1076 transitions. [2019-10-13 19:19:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 19:19:50,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:50,198 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:19:50,406 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:50,406 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1328074300, now seen corresponding path program 1 times [2019-10-13 19:19:50,408 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:50,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687628418] [2019-10-13 19:19:50,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,460 WARN L191 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:19:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:51,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687628418] [2019-10-13 19:19:51,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674352998] [2019-10-13 19:19:51,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:52,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:52,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:52,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-10-13 19:19:52,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58394691] [2019-10-13 19:19:52,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:52,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:52,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:52,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:19:52,598 INFO L87 Difference]: Start difference. First operand 679 states and 1076 transitions. Second operand 7 states. [2019-10-13 19:19:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:52,829 INFO L93 Difference]: Finished difference Result 1341 states and 2139 transitions. [2019-10-13 19:19:52,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:52,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-13 19:19:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:52,839 INFO L225 Difference]: With dead ends: 1341 [2019-10-13 19:19:52,839 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 19:19:52,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:19:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 19:19:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2019-10-13 19:19:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-13 19:19:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1088 transitions. [2019-10-13 19:19:52,925 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1088 transitions. Word has length 115 [2019-10-13 19:19:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:52,927 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1088 transitions. [2019-10-13 19:19:52,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1088 transitions. [2019-10-13 19:19:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:19:52,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:52,933 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:19:53,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:53,141 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1848619236, now seen corresponding path program 1 times [2019-10-13 19:19:53,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:53,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597699415] [2019-10-13 19:19:53,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:53,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:53,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,130 WARN L191 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:19:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:54,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597699415] [2019-10-13 19:19:54,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041556183] [2019-10-13 19:19:54,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:55,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:55,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:55,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:19:55,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302383654] [2019-10-13 19:19:55,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:55,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:55,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:55,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:55,189 INFO L87 Difference]: Start difference. First operand 686 states and 1088 transitions. Second operand 4 states. [2019-10-13 19:19:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:55,316 INFO L93 Difference]: Finished difference Result 1357 states and 2164 transitions. [2019-10-13 19:19:55,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:55,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-13 19:19:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:55,325 INFO L225 Difference]: With dead ends: 1357 [2019-10-13 19:19:55,325 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 19:19:55,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 19:19:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-13 19:19:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:19:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1096 transitions. [2019-10-13 19:19:55,362 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1096 transitions. Word has length 116 [2019-10-13 19:19:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:55,362 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1096 transitions. [2019-10-13 19:19:55,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1096 transitions. [2019-10-13 19:19:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:19:55,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:55,366 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:19:55,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:55,574 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -154321500, now seen corresponding path program 1 times [2019-10-13 19:19:55,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:55,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818776250] [2019-10-13 19:19:55,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,577 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,699 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:19:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,858 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:19:57,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818776250] [2019-10-13 19:19:57,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428178703] [2019-10-13 19:19:57,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:57,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:58,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:58,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-13 19:19:58,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694151805] [2019-10-13 19:19:58,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:58,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:58,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:58,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:19:58,129 INFO L87 Difference]: Start difference. First operand 695 states and 1096 transitions. Second operand 7 states. [2019-10-13 19:19:58,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:58,288 INFO L93 Difference]: Finished difference Result 1358 states and 2155 transitions. [2019-10-13 19:19:58,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:58,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-13 19:19:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:58,306 INFO L225 Difference]: With dead ends: 1358 [2019-10-13 19:19:58,307 INFO L226 Difference]: Without dead ends: 704 [2019-10-13 19:19:58,314 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:19:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-13 19:19:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 695. [2019-10-13 19:19:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:19:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1096 transitions. [2019-10-13 19:19:58,349 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1096 transitions. Word has length 116 [2019-10-13 19:19:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:58,350 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1096 transitions. [2019-10-13 19:19:58,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1096 transitions. [2019-10-13 19:19:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 19:19:58,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:58,354 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:19:58,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:58,563 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:58,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:58,563 INFO L82 PathProgramCache]: Analyzing trace with hash -698243827, now seen corresponding path program 1 times [2019-10-13 19:19:58,564 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:58,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401738145] [2019-10-13 19:19:58,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:58,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:58,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,779 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:19:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:00,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401738145] [2019-10-13 19:20:00,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589038248] [2019-10-13 19:20:00,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:00,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:00,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:00,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:00,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857544845] [2019-10-13 19:20:00,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:00,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:00,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:00,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:00,591 INFO L87 Difference]: Start difference. First operand 695 states and 1096 transitions. Second operand 4 states. [2019-10-13 19:20:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:00,857 INFO L93 Difference]: Finished difference Result 1391 states and 2225 transitions. [2019-10-13 19:20:00,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:00,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 19:20:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:00,867 INFO L225 Difference]: With dead ends: 1391 [2019-10-13 19:20:00,867 INFO L226 Difference]: Without dead ends: 737 [2019-10-13 19:20:00,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-13 19:20:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 734. [2019-10-13 19:20:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-13 19:20:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1169 transitions. [2019-10-13 19:20:00,913 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1169 transitions. Word has length 119 [2019-10-13 19:20:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:00,915 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1169 transitions. [2019-10-13 19:20:00,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1169 transitions. [2019-10-13 19:20:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 19:20:00,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:00,920 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:01,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,128 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1098316311, now seen corresponding path program 1 times [2019-10-13 19:20:01,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:01,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659105840] [2019-10-13 19:20:01,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,084 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:02,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659105840] [2019-10-13 19:20:02,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574798558] [2019-10-13 19:20:02,407 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 [2019-10-13 19:20:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:02,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:03,046 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:03,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:03,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604659850] [2019-10-13 19:20:03,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:03,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:03,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:03,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:03,049 INFO L87 Difference]: Start difference. First operand 734 states and 1169 transitions. Second operand 4 states. [2019-10-13 19:20:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:03,155 INFO L93 Difference]: Finished difference Result 1415 states and 2271 transitions. [2019-10-13 19:20:03,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:03,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 19:20:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:03,166 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 19:20:03,166 INFO L226 Difference]: Without dead ends: 734 [2019-10-13 19:20:03,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-13 19:20:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-13 19:20:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-13 19:20:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1164 transitions. [2019-10-13 19:20:03,216 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1164 transitions. Word has length 121 [2019-10-13 19:20:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:03,217 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1164 transitions. [2019-10-13 19:20:03,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1164 transitions. [2019-10-13 19:20:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:20:03,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:03,224 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:03,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:03,435 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1266209205, now seen corresponding path program 1 times [2019-10-13 19:20:03,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:03,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302018141] [2019-10-13 19:20:03,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,501 WARN L191 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:04,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302018141] [2019-10-13 19:20:04,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844394357] [2019-10-13 19:20:04,790 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 [2019-10-13 19:20:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:05,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:05,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:05,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:20:05,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967037451] [2019-10-13 19:20:05,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:05,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:05,419 INFO L87 Difference]: Start difference. First operand 734 states and 1164 transitions. Second operand 7 states. [2019-10-13 19:20:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:05,668 INFO L93 Difference]: Finished difference Result 1383 states and 2203 transitions. [2019-10-13 19:20:05,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:05,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-13 19:20:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:05,675 INFO L225 Difference]: With dead ends: 1383 [2019-10-13 19:20:05,675 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:20:05,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:20:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 741. [2019-10-13 19:20:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-13 19:20:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1175 transitions. [2019-10-13 19:20:05,731 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1175 transitions. Word has length 122 [2019-10-13 19:20:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:05,731 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1175 transitions. [2019-10-13 19:20:05,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1175 transitions. [2019-10-13 19:20:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:20:05,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:05,735 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:05,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:05,947 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1449069541, now seen corresponding path program 1 times [2019-10-13 19:20:05,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:05,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013791526] [2019-10-13 19:20:05,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,938 WARN L191 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:07,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013791526] [2019-10-13 19:20:07,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274903420] [2019-10-13 19:20:07,230 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 [2019-10-13 19:20:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:07,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:07,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:07,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:20:07,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904285273] [2019-10-13 19:20:07,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:07,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:07,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:07,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:07,856 INFO L87 Difference]: Start difference. First operand 741 states and 1175 transitions. Second operand 7 states. [2019-10-13 19:20:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:08,043 INFO L93 Difference]: Finished difference Result 1383 states and 2202 transitions. [2019-10-13 19:20:08,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:08,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-13 19:20:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:08,051 INFO L225 Difference]: With dead ends: 1383 [2019-10-13 19:20:08,051 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:20:08,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:20:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 738. [2019-10-13 19:20:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 19:20:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1169 transitions. [2019-10-13 19:20:08,102 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1169 transitions. Word has length 123 [2019-10-13 19:20:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:08,102 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1169 transitions. [2019-10-13 19:20:08,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1169 transitions. [2019-10-13 19:20:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:20:08,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:08,105 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:08,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,314 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1278976275, now seen corresponding path program 1 times [2019-10-13 19:20:08,314 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:08,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871440138] [2019-10-13 19:20:08,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,150 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:09,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871440138] [2019-10-13 19:20:09,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577947172] [2019-10-13 19:20:09,463 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 [2019-10-13 19:20:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:09,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:10,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:10,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:10,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909878480] [2019-10-13 19:20:10,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:10,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:10,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:10,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:10,024 INFO L87 Difference]: Start difference. First operand 738 states and 1169 transitions. Second operand 4 states. [2019-10-13 19:20:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:10,128 INFO L93 Difference]: Finished difference Result 1419 states and 2271 transitions. [2019-10-13 19:20:10,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:10,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:20:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:10,137 INFO L225 Difference]: With dead ends: 1419 [2019-10-13 19:20:10,137 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 19:20:10,141 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 19:20:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 19:20:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 19:20:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1166 transitions. [2019-10-13 19:20:10,169 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1166 transitions. Word has length 123 [2019-10-13 19:20:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:10,170 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1166 transitions. [2019-10-13 19:20:10,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1166 transitions. [2019-10-13 19:20:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:20:10,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:10,173 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:10,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:10,388 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1059446297, now seen corresponding path program 1 times [2019-10-13 19:20:10,388 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:10,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834878018] [2019-10-13 19:20:10,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,345 WARN L191 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,492 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:11,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834878018] [2019-10-13 19:20:11,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206175847] [2019-10-13 19:20:11,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:12,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:12,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:12,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:12,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574167315] [2019-10-13 19:20:12,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:12,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:12,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:12,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:12,210 INFO L87 Difference]: Start difference. First operand 738 states and 1166 transitions. Second operand 4 states. [2019-10-13 19:20:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:12,409 INFO L93 Difference]: Finished difference Result 1415 states and 2265 transitions. [2019-10-13 19:20:12,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:12,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:20:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:12,421 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 19:20:12,421 INFO L226 Difference]: Without dead ends: 780 [2019-10-13 19:20:12,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2019-10-13 19:20:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2019-10-13 19:20:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-13 19:20:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1243 transitions. [2019-10-13 19:20:12,451 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1243 transitions. Word has length 124 [2019-10-13 19:20:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:12,452 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 1243 transitions. [2019-10-13 19:20:12,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1243 transitions. [2019-10-13 19:20:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:20:12,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:12,455 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:12,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:12,672 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1832817376, now seen corresponding path program 1 times [2019-10-13 19:20:12,673 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:12,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27064782] [2019-10-13 19:20:12,673 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:12,673 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:12,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,574 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,716 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:13,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27064782] [2019-10-13 19:20:13,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074619142] [2019-10-13 19:20:13,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:20:14,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 19:20:14,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:14,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-13 19:20:14,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370596093] [2019-10-13 19:20:14,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:20:14,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:14,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:20:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:14,544 INFO L87 Difference]: Start difference. First operand 780 states and 1243 transitions. Second operand 3 states. [2019-10-13 19:20:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:14,715 INFO L93 Difference]: Finished difference Result 2024 states and 3262 transitions. [2019-10-13 19:20:14,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:20:14,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-13 19:20:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:14,731 INFO L225 Difference]: With dead ends: 2024 [2019-10-13 19:20:14,731 INFO L226 Difference]: Without dead ends: 1393 [2019-10-13 19:20:14,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2019-10-13 19:20:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1320. [2019-10-13 19:20:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2019-10-13 19:20:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2128 transitions. [2019-10-13 19:20:14,818 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2128 transitions. Word has length 126 [2019-10-13 19:20:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:14,820 INFO L462 AbstractCegarLoop]: Abstraction has 1320 states and 2128 transitions. [2019-10-13 19:20:14,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:20:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2128 transitions. [2019-10-13 19:20:14,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 19:20:14,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:14,829 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:15,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:15,038 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash -918204397, now seen corresponding path program 1 times [2019-10-13 19:20:15,038 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:15,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007930850] [2019-10-13 19:20:15,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:15,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:15,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,889 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,031 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,389 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-13 19:20:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:16,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007930850] [2019-10-13 19:20:16,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424432973] [2019-10-13 19:20:16,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true