java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:52,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:52,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:52,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:52,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:52,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:52,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:52,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:52,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:52,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:52,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:52,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:52,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:53,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:53,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:53,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:53,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:53,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:53,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:53,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:53,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:53,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:53,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:53,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:53,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:53,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:53,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:53,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:53,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:53,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:53,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:53,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:53,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:53,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:53,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:53,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:53,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:53,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:53,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:53,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:53,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:53,041 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 19:20:53,066 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:53,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:53,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:53,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:53,069 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:53,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:53,069 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:53,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:53,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:53,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:53,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:53,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:53,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:53,072 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:53,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:53,072 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:53,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:53,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:53,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:53,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:53,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:53,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:53,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:53,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:53,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:53,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:53,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:53,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:53,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:53,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:53,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:53,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:53,373 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:53,374 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:53,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2019-10-13 19:20:53,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048498fb/438b364384b244d8a0a2d28ccb5c9c60/FLAG809b429b1 [2019-10-13 19:20:54,123 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:54,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2019-10-13 19:20:54,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048498fb/438b364384b244d8a0a2d28ccb5c9c60/FLAG809b429b1 [2019-10-13 19:20:54,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048498fb/438b364384b244d8a0a2d28ccb5c9c60 [2019-10-13 19:20:54,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:54,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:54,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:54,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:54,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:54,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:54" (1/1) ... [2019-10-13 19:20:54,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef6259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:54, skipping insertion in model container [2019-10-13 19:20:54,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:54" (1/1) ... [2019-10-13 19:20:54,336 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:54,420 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:55,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:55,210 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:55,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:55,420 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:55,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55 WrapperNode [2019-10-13 19:20:55,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:55,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:55,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:55,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:55,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:55,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:55,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:55,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:55,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (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 19:20:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:55,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:55,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:55,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:55,688 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:20:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:55,692 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:55,692 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:20:55,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:55,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:55,694 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:55,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:20:55,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:55,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:55,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:55,695 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:55,695 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:20:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:20:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:55,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:55,702 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:55,702 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:55,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:55,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:55,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:55,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:55,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:55,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:55,705 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:55,705 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:55,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:55,709 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:55,709 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:55,709 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:55,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:20:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:20:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:20:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:20:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:20:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:20:58,385 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:20:58,385 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:20:58,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:58 BoogieIcfgContainer [2019-10-13 19:20:58,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:20:58,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:20:58,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:20:58,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:20:58,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:54" (1/3) ... [2019-10-13 19:20:58,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706247a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:58, skipping insertion in model container [2019-10-13 19:20:58,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55" (2/3) ... [2019-10-13 19:20:58,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706247a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:58, skipping insertion in model container [2019-10-13 19:20:58,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:58" (3/3) ... [2019-10-13 19:20:58,397 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2019-10-13 19:20:58,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:20:58,424 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:20:58,440 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:20:58,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:20:58,492 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:20:58,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:20:58,492 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:20:58,492 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:20:58,493 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:20:58,493 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:20:58,493 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:20:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2019-10-13 19:20:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:20:58,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:58,582 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:58,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2009729749, now seen corresponding path program 1 times [2019-10-13 19:20:58,603 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:58,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684780429] [2019-10-13 19:20:58,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:58,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:58,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,244 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,542 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,804 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:01,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684780429] [2019-10-13 19:21:01,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135886623] [2019-10-13 19:21:01,364 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 19:21:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:01,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 19:21:02,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:02,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-13 19:21:02,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095793467] [2019-10-13 19:21:02,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:02,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:02,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:02,045 INFO L87 Difference]: Start difference. First operand 766 states. Second operand 2 states. [2019-10-13 19:21:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:02,144 INFO L93 Difference]: Finished difference Result 649 states and 1033 transitions. [2019-10-13 19:21:02,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:02,146 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 19:21:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:02,183 INFO L225 Difference]: With dead ends: 649 [2019-10-13 19:21:02,183 INFO L226 Difference]: Without dead ends: 612 [2019-10-13 19:21:02,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-13 19:21:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-13 19:21:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-13 19:21:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 978 transitions. [2019-10-13 19:21:02,316 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 978 transitions. Word has length 164 [2019-10-13 19:21:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:02,319 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 978 transitions. [2019-10-13 19:21:02,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 978 transitions. [2019-10-13 19:21:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:21:02,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:02,327 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:02,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:02,537 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:02,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2088381448, now seen corresponding path program 1 times [2019-10-13 19:21:02,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:02,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425554515] [2019-10-13 19:21:02,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,713 WARN L191 SmtUtils]: Spent 909.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,023 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,202 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:04,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425554515] [2019-10-13 19:21:04,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164860912] [2019-10-13 19:21:04,668 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 19:21:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:05,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:05,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:05,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:05,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556943434] [2019-10-13 19:21:05,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:05,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:05,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:05,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:05,361 INFO L87 Difference]: Start difference. First operand 612 states and 978 transitions. Second operand 4 states. [2019-10-13 19:21:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:05,492 INFO L93 Difference]: Finished difference Result 1196 states and 1929 transitions. [2019-10-13 19:21:05,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:05,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 19:21:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:05,499 INFO L225 Difference]: With dead ends: 1196 [2019-10-13 19:21:05,499 INFO L226 Difference]: Without dead ends: 612 [2019-10-13 19:21:05,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-13 19:21:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-13 19:21:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-13 19:21:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 977 transitions. [2019-10-13 19:21:05,570 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 977 transitions. Word has length 166 [2019-10-13 19:21:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:05,571 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 977 transitions. [2019-10-13 19:21:05,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 977 transitions. [2019-10-13 19:21:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 19:21:05,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:05,585 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:05,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:05,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2119485278, now seen corresponding path program 1 times [2019-10-13 19:21:05,797 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:05,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258663803] [2019-10-13 19:21:05,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:05,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:05,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,784 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,057 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,234 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:07,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258663803] [2019-10-13 19:21:07,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875429716] [2019-10-13 19:21:07,649 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 19:21:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:08,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:08,283 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:08,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:08,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817690963] [2019-10-13 19:21:08,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:08,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:08,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:08,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:08,285 INFO L87 Difference]: Start difference. First operand 612 states and 977 transitions. Second operand 4 states. [2019-10-13 19:21:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:08,380 INFO L93 Difference]: Finished difference Result 1196 states and 1927 transitions. [2019-10-13 19:21:08,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:08,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-13 19:21:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:08,387 INFO L225 Difference]: With dead ends: 1196 [2019-10-13 19:21:08,387 INFO L226 Difference]: Without dead ends: 612 [2019-10-13 19:21:08,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-13 19:21:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-13 19:21:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-13 19:21:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 976 transitions. [2019-10-13 19:21:08,425 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 976 transitions. Word has length 168 [2019-10-13 19:21:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:08,425 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 976 transitions. [2019-10-13 19:21:08,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 976 transitions. [2019-10-13 19:21:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:21:08,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:08,431 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:08,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:08,641 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:08,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1181326224, now seen corresponding path program 1 times [2019-10-13 19:21:08,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:08,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925873099] [2019-10-13 19:21:08,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:08,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:08,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,680 WARN L191 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,923 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,087 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:10,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925873099] [2019-10-13 19:21:10,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973553600] [2019-10-13 19:21:10,468 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 19:21:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:11,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:11,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:11,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:11,242 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939217979] [2019-10-13 19:21:11,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:11,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:11,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:11,245 INFO L87 Difference]: Start difference. First operand 612 states and 976 transitions. Second operand 4 states. [2019-10-13 19:21:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:11,346 INFO L93 Difference]: Finished difference Result 1203 states and 1934 transitions. [2019-10-13 19:21:11,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:11,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 19:21:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:11,352 INFO L225 Difference]: With dead ends: 1203 [2019-10-13 19:21:11,352 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:21:11,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:21:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 19:21:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:21:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 988 transitions. [2019-10-13 19:21:11,383 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 988 transitions. Word has length 170 [2019-10-13 19:21:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:11,384 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 988 transitions. [2019-10-13 19:21:11,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 988 transitions. [2019-10-13 19:21:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:21:11,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:11,389 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:11,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:11,598 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:11,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1277638939, now seen corresponding path program 1 times [2019-10-13 19:21:11,599 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:11,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406298220] [2019-10-13 19:21:11,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,631 WARN L191 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,900 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,056 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:13,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406298220] [2019-10-13 19:21:13,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777949570] [2019-10-13 19:21:13,569 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 19:21:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:14,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:14,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:14,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:14,189 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386676139] [2019-10-13 19:21:14,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:14,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:14,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:14,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:14,191 INFO L87 Difference]: Start difference. First operand 621 states and 988 transitions. Second operand 4 states. [2019-10-13 19:21:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:14,273 INFO L93 Difference]: Finished difference Result 1205 states and 1935 transitions. [2019-10-13 19:21:14,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:14,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 19:21:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:14,290 INFO L225 Difference]: With dead ends: 1205 [2019-10-13 19:21:14,290 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:21:14,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:21:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 19:21:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:21:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 987 transitions. [2019-10-13 19:21:14,339 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 987 transitions. Word has length 171 [2019-10-13 19:21:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:14,340 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 987 transitions. [2019-10-13 19:21:14,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 987 transitions. [2019-10-13 19:21:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 19:21:14,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:14,348 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:14,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:14,560 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash 107661556, now seen corresponding path program 1 times [2019-10-13 19:21:14,561 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:14,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922178624] [2019-10-13 19:21:14,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:14,562 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:14,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,780 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,038 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,196 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:16,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922178624] [2019-10-13 19:21:16,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884096674] [2019-10-13 19:21:16,498 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 19:21:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:17,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:17,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:17,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:17,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335533592] [2019-10-13 19:21:17,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:17,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:17,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:17,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:17,126 INFO L87 Difference]: Start difference. First operand 621 states and 987 transitions. Second operand 4 states. [2019-10-13 19:21:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:17,257 INFO L93 Difference]: Finished difference Result 1205 states and 1934 transitions. [2019-10-13 19:21:17,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:17,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 19:21:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:17,264 INFO L225 Difference]: With dead ends: 1205 [2019-10-13 19:21:17,264 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:21:17,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:21:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 19:21:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:21:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-10-13 19:21:17,289 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 172 [2019-10-13 19:21:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:17,291 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-10-13 19:21:17,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-10-13 19:21:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 19:21:17,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:17,297 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:17,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:17,506 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1662603201, now seen corresponding path program 1 times [2019-10-13 19:21:17,507 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:17,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43069241] [2019-10-13 19:21:17,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,553 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,844 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,023 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:21:19,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43069241] [2019-10-13 19:21:19,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181594794] [2019-10-13 19:21:19,401 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 19:21:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:20,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:20,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:20,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:20,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086269067] [2019-10-13 19:21:20,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:20,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:20,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:20,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:20,134 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 4 states. [2019-10-13 19:21:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:20,301 INFO L93 Difference]: Finished difference Result 1204 states and 1934 transitions. [2019-10-13 19:21:20,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:20,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-13 19:21:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:20,307 INFO L225 Difference]: With dead ends: 1204 [2019-10-13 19:21:20,307 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:21:20,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:21:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 19:21:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:21:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 981 transitions. [2019-10-13 19:21:20,333 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 981 transitions. Word has length 173 [2019-10-13 19:21:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:20,334 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 981 transitions. [2019-10-13 19:21:20,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 981 transitions. [2019-10-13 19:21:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 19:21:20,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:20,339 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:20,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,547 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:20,547 INFO L82 PathProgramCache]: Analyzing trace with hash 795903017, now seen corresponding path program 1 times [2019-10-13 19:21:20,548 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:20,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284605281] [2019-10-13 19:21:20,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,672 WARN L191 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,927 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,107 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:21:22,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284605281] [2019-10-13 19:21:22,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22392956] [2019-10-13 19:21:22,629 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 19:21:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:23,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:23,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:23,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:23,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812847651] [2019-10-13 19:21:23,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:23,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:23,296 INFO L87 Difference]: Start difference. First operand 621 states and 981 transitions. Second operand 4 states. [2019-10-13 19:21:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:23,454 INFO L93 Difference]: Finished difference Result 1204 states and 1924 transitions. [2019-10-13 19:21:23,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:23,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-13 19:21:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:23,459 INFO L225 Difference]: With dead ends: 1204 [2019-10-13 19:21:23,460 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:21:23,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:21:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 19:21:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:21:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 976 transitions. [2019-10-13 19:21:23,486 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 976 transitions. Word has length 175 [2019-10-13 19:21:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:23,486 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 976 transitions. [2019-10-13 19:21:23,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 976 transitions. [2019-10-13 19:21:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 19:21:23,491 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:23,491 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:23,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:23,700 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1292592075, now seen corresponding path program 1 times [2019-10-13 19:21:23,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:23,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425082508] [2019-10-13 19:21:23,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,573 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,848 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,052 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:21:25,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425082508] [2019-10-13 19:21:25,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858299975] [2019-10-13 19:21:25,880 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 19:21:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:26,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:26,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:26,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2019-10-13 19:21:26,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023918764] [2019-10-13 19:21:26,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:26,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:26,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:21:26,549 INFO L87 Difference]: Start difference. First operand 621 states and 976 transitions. Second operand 4 states. [2019-10-13 19:21:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:26,773 INFO L93 Difference]: Finished difference Result 1240 states and 1973 transitions. [2019-10-13 19:21:26,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:26,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-13 19:21:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:26,778 INFO L225 Difference]: With dead ends: 1240 [2019-10-13 19:21:26,778 INFO L226 Difference]: Without dead ends: 660 [2019-10-13 19:21:26,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:21:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-13 19:21:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-13 19:21:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-13 19:21:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1040 transitions. [2019-10-13 19:21:26,805 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1040 transitions. Word has length 177 [2019-10-13 19:21:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:26,806 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1040 transitions. [2019-10-13 19:21:26,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1040 transitions. [2019-10-13 19:21:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 19:21:26,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:26,811 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:27,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:27,030 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash 550468332, now seen corresponding path program 1 times [2019-10-13 19:21:27,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:27,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840640214] [2019-10-13 19:21:27,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:27,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:27,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat