java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:35,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:35,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:35,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:35,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:35,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:35,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:35,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:35,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:35,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:35,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:35,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:35,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:35,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:35,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:35,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:35,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:35,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:35,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:35,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:35,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:35,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:35,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:35,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:35,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:35,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:35,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:35,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:35,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:35,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:35,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:35,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:35,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:35,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:35,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:35,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:35,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:35,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:35,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:35,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:35,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:35,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:35,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:35,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:35,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:35,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:35,249 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:35,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:35,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:35,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:35,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:35,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:35,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:35,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:35,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:35,251 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:35,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:35,251 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:35,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:35,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:35,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:35,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:35,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:35,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:35,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:35,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:35,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:35,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:35,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:35,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:35,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:35,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:35,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:35,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:35,563 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:35,563 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:35,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-13 19:19:35,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e2e551c/f94a8993d9d1417c90a44ec6f5b919e3/FLAGb1071bd3b [2019-10-13 19:19:36,290 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:36,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-13 19:19:36,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e2e551c/f94a8993d9d1417c90a44ec6f5b919e3/FLAGb1071bd3b [2019-10-13 19:19:36,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e2e551c/f94a8993d9d1417c90a44ec6f5b919e3 [2019-10-13 19:19:36,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:36,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:36,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:36,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:36,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:36,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:36" (1/1) ... [2019-10-13 19:19:36,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:36, skipping insertion in model container [2019-10-13 19:19:36,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:36" (1/1) ... [2019-10-13 19:19:36,523 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:36,611 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:37,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:37,293 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:37,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:37,526 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:37,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37 WrapperNode [2019-10-13 19:19:37,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:37,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:37,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:37,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:37,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... [2019-10-13 19:19:37,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:37,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:37,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:37,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:37,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:37,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:37,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:37,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:37,880 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:37,881 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:37,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:37,881 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:19:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:19:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:37,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:37,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:40,502 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:40,503 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:40,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:40 BoogieIcfgContainer [2019-10-13 19:19:40,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:40,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:40,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:40,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:40,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:36" (1/3) ... [2019-10-13 19:19:40,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1cdf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:40, skipping insertion in model container [2019-10-13 19:19:40,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:37" (2/3) ... [2019-10-13 19:19:40,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1cdf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:40, skipping insertion in model container [2019-10-13 19:19:40,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:40" (3/3) ... [2019-10-13 19:19:40,513 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2019-10-13 19:19:40,523 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:40,533 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:40,545 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:40,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:40,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:40,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:40,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:40,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:40,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:40,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:40,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states. [2019-10-13 19:19:40,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:19:40,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:40,673 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:40,675 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1416283797, now seen corresponding path program 1 times [2019-10-13 19:19:40,688 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:40,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424685296] [2019-10-13 19:19:40,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:40,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:40,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,262 WARN L191 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:19:42,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424685296] [2019-10-13 19:19:42,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626778576] [2019-10-13 19:19:42,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:19:43,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 19:19:43,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:43,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-10-13 19:19:43,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621744847] [2019-10-13 19:19:43,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:19:43,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:43,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:19:43,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:43,563 INFO L87 Difference]: Start difference. First operand 816 states. Second operand 2 states. [2019-10-13 19:19:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:43,702 INFO L93 Difference]: Finished difference Result 1325 states and 2137 transitions. [2019-10-13 19:19:43,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:19:43,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 161 [2019-10-13 19:19:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:43,744 INFO L225 Difference]: With dead ends: 1325 [2019-10-13 19:19:43,745 INFO L226 Difference]: Without dead ends: 670 [2019-10-13 19:19:43,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2019-10-13 19:19:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2019-10-13 19:19:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-13 19:19:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1060 transitions. [2019-10-13 19:19:43,901 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1060 transitions. Word has length 161 [2019-10-13 19:19:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:43,906 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 1060 transitions. [2019-10-13 19:19:43,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:19:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1060 transitions. [2019-10-13 19:19:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:19:43,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:43,920 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:44,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:44,126 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:44,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2071718859, now seen corresponding path program 1 times [2019-10-13 19:19:44,128 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:44,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721449918] [2019-10-13 19:19:44,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:44,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:44,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,245 WARN L191 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,458 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:19:45,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721449918] [2019-10-13 19:19:45,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052749230] [2019-10-13 19:19:45,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:46,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:19:46,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:46,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:19:46,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661926746] [2019-10-13 19:19:46,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:46,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:46,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:46,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:46,463 INFO L87 Difference]: Start difference. First operand 670 states and 1060 transitions. Second operand 4 states. [2019-10-13 19:19:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:46,626 INFO L93 Difference]: Finished difference Result 1323 states and 2110 transitions. [2019-10-13 19:19:46,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:46,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-13 19:19:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:46,633 INFO L225 Difference]: With dead ends: 1323 [2019-10-13 19:19:46,633 INFO L226 Difference]: Without dead ends: 679 [2019-10-13 19:19:46,638 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-13 19:19:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2019-10-13 19:19:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 19:19:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1074 transitions. [2019-10-13 19:19:46,673 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1074 transitions. Word has length 161 [2019-10-13 19:19:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:46,673 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1074 transitions. [2019-10-13 19:19:46,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1074 transitions. [2019-10-13 19:19:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:19:46,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:46,686 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:46,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:46,902 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1394548635, now seen corresponding path program 1 times [2019-10-13 19:19:46,902 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:46,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177065338] [2019-10-13 19:19:46,903 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,903 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,830 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 19:19:48,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177065338] [2019-10-13 19:19:48,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96970699] [2019-10-13 19:19:48,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:48,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:49,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:49,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-13 19:19:49,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304402702] [2019-10-13 19:19:49,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:49,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:49,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:49,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:19:49,096 INFO L87 Difference]: Start difference. First operand 679 states and 1074 transitions. Second operand 7 states. [2019-10-13 19:19:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:49,295 INFO L93 Difference]: Finished difference Result 1341 states and 2135 transitions. [2019-10-13 19:19:49,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:49,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2019-10-13 19:19:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:49,305 INFO L225 Difference]: With dead ends: 1341 [2019-10-13 19:19:49,305 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 19:19:49,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:19:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 19:19:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2019-10-13 19:19:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-13 19:19:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1086 transitions. [2019-10-13 19:19:49,355 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1086 transitions. Word has length 163 [2019-10-13 19:19:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:49,356 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1086 transitions. [2019-10-13 19:19:49,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1086 transitions. [2019-10-13 19:19:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:19:49,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:49,363 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:49,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,571 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash -146815623, now seen corresponding path program 1 times [2019-10-13 19:19:49,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:49,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901778113] [2019-10-13 19:19:49,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:49,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:49,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,537 WARN L191 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,687 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:19:50,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901778113] [2019-10-13 19:19:50,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356801172] [2019-10-13 19:19:50,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:51,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:19:51,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:51,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:51,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392341436] [2019-10-13 19:19:51,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:51,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:51,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:51,564 INFO L87 Difference]: Start difference. First operand 686 states and 1086 transitions. Second operand 4 states. [2019-10-13 19:19:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:51,675 INFO L93 Difference]: Finished difference Result 1357 states and 2160 transitions. [2019-10-13 19:19:51,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:51,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-13 19:19:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:51,681 INFO L225 Difference]: With dead ends: 1357 [2019-10-13 19:19:51,681 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 19:19:51,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 19:19:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-13 19:19:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:19:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1094 transitions. [2019-10-13 19:19:51,747 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1094 transitions. Word has length 164 [2019-10-13 19:19:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:51,748 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1094 transitions. [2019-10-13 19:19:51,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1094 transitions. [2019-10-13 19:19:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:19:51,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:51,754 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:19:51,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:51,961 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1430842587, now seen corresponding path program 1 times [2019-10-13 19:19:51,963 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:51,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675213650] [2019-10-13 19:19:51,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:51,964 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:51,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,800 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 19:19:53,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675213650] [2019-10-13 19:19:53,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546062174] [2019-10-13 19:19:53,295 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 19:19:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:53,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:54,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:54,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2019-10-13 19:19:54,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679849018] [2019-10-13 19:19:54,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:54,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:54,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:19:54,013 INFO L87 Difference]: Start difference. First operand 695 states and 1094 transitions. Second operand 7 states. [2019-10-13 19:19:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:54,174 INFO L93 Difference]: Finished difference Result 1358 states and 2151 transitions. [2019-10-13 19:19:54,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:54,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-10-13 19:19:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:54,188 INFO L225 Difference]: With dead ends: 1358 [2019-10-13 19:19:54,188 INFO L226 Difference]: Without dead ends: 704 [2019-10-13 19:19:54,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:19:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-13 19:19:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 695. [2019-10-13 19:19:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:19:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1094 transitions. [2019-10-13 19:19:54,231 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1094 transitions. Word has length 164 [2019-10-13 19:19:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:54,232 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1094 transitions. [2019-10-13 19:19:54,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1094 transitions. [2019-10-13 19:19:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 19:19:54,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:54,239 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:54,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:54,454 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash -907404626, now seen corresponding path program 1 times [2019-10-13 19:19:54,455 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:54,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901010917] [2019-10-13 19:19:54,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:54,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:54,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,407 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:19:55,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901010917] [2019-10-13 19:19:55,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061727838] [2019-10-13 19:19:55,805 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 19:19:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:56,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:56,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:56,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:56,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39879800] [2019-10-13 19:19:56,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:56,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:56,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:56,440 INFO L87 Difference]: Start difference. First operand 695 states and 1094 transitions. Second operand 4 states. [2019-10-13 19:19:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:56,718 INFO L93 Difference]: Finished difference Result 1391 states and 2221 transitions. [2019-10-13 19:19:56,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:56,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-13 19:19:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:56,731 INFO L225 Difference]: With dead ends: 1391 [2019-10-13 19:19:56,731 INFO L226 Difference]: Without dead ends: 737 [2019-10-13 19:19:56,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-13 19:19:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 734. [2019-10-13 19:19:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-13 19:19:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1167 transitions. [2019-10-13 19:19:56,785 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1167 transitions. Word has length 167 [2019-10-13 19:19:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:56,786 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1167 transitions. [2019-10-13 19:19:56,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1167 transitions. [2019-10-13 19:19:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 19:19:56,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:56,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:19:57,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,016 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -548552272, now seen corresponding path program 1 times [2019-10-13 19:19:57,017 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:57,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504304636] [2019-10-13 19:19:57,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,973 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:19:58,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504304636] [2019-10-13 19:19:58,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375761355] [2019-10-13 19:19:58,440 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 19:19:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:59,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:19:59,070 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:59,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:59,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234273828] [2019-10-13 19:19:59,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:59,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:59,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:59,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:59,077 INFO L87 Difference]: Start difference. First operand 734 states and 1167 transitions. Second operand 4 states. [2019-10-13 19:19:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:59,163 INFO L93 Difference]: Finished difference Result 1415 states and 2267 transitions. [2019-10-13 19:19:59,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:59,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-13 19:19:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:59,171 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 19:19:59,171 INFO L226 Difference]: Without dead ends: 734 [2019-10-13 19:19:59,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-13 19:19:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-13 19:19:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-13 19:19:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1162 transitions. [2019-10-13 19:19:59,203 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1162 transitions. Word has length 169 [2019-10-13 19:19:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:59,204 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1162 transitions. [2019-10-13 19:19:59,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1162 transitions. [2019-10-13 19:19:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:19:59,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:59,211 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:19:59,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,418 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:59,419 INFO L82 PathProgramCache]: Analyzing trace with hash -981805208, now seen corresponding path program 1 times [2019-10-13 19:19:59,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:59,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330933784] [2019-10-13 19:19:59,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,249 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,402 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:00,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330933784] [2019-10-13 19:20:00,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091640878] [2019-10-13 19:20:00,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:01,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 19:20:01,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:01,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:20:01,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776097891] [2019-10-13 19:20:01,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:01,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:01,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:01,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:01,242 INFO L87 Difference]: Start difference. First operand 734 states and 1162 transitions. Second operand 7 states. [2019-10-13 19:20:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:01,392 INFO L93 Difference]: Finished difference Result 1383 states and 2199 transitions. [2019-10-13 19:20:01,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:01,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-10-13 19:20:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:01,399 INFO L225 Difference]: With dead ends: 1383 [2019-10-13 19:20:01,399 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:20:01,403 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:20:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 741. [2019-10-13 19:20:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-13 19:20:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1173 transitions. [2019-10-13 19:20:01,446 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1173 transitions. Word has length 170 [2019-10-13 19:20:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:01,447 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1173 transitions. [2019-10-13 19:20:01,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1173 transitions. [2019-10-13 19:20:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:20:01,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:01,453 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:20:01,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,661 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash -304800936, now seen corresponding path program 1 times [2019-10-13 19:20:01,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:01,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036571842] [2019-10-13 19:20:01,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,454 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:20:02,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036571842] [2019-10-13 19:20:02,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766310181] [2019-10-13 19:20:02,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:03,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 19:20:03,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:03,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:20:03,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954449859] [2019-10-13 19:20:03,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:03,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:03,508 INFO L87 Difference]: Start difference. First operand 741 states and 1173 transitions. Second operand 7 states. [2019-10-13 19:20:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:03,640 INFO L93 Difference]: Finished difference Result 1383 states and 2198 transitions. [2019-10-13 19:20:03,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:03,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2019-10-13 19:20:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:03,646 INFO L225 Difference]: With dead ends: 1383 [2019-10-13 19:20:03,647 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:20:03,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:20:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 738. [2019-10-13 19:20:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 19:20:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1167 transitions. [2019-10-13 19:20:03,675 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1167 transitions. Word has length 171 [2019-10-13 19:20:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:03,675 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1167 transitions. [2019-10-13 19:20:03,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1167 transitions. [2019-10-13 19:20:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:20:03,681 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:03,681 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:20:03,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:03,888 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1818939092, now seen corresponding path program 1 times [2019-10-13 19:20:03,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:03,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090655865] [2019-10-13 19:20:03,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,679 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:05,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090655865] [2019-10-13 19:20:05,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456789022] [2019-10-13 19:20:05,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:05,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:20:05,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:05,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:05,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325927943] [2019-10-13 19:20:05,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:05,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:05,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:05,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:05,737 INFO L87 Difference]: Start difference. First operand 738 states and 1167 transitions. Second operand 4 states. [2019-10-13 19:20:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:05,805 INFO L93 Difference]: Finished difference Result 1419 states and 2267 transitions. [2019-10-13 19:20:05,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:05,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 19:20:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:05,811 INFO L225 Difference]: With dead ends: 1419 [2019-10-13 19:20:05,811 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 19:20:05,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 19:20:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 19:20:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 19:20:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1164 transitions. [2019-10-13 19:20:05,838 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1164 transitions. Word has length 171 [2019-10-13 19:20:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:05,838 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1164 transitions. [2019-10-13 19:20:05,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1164 transitions. [2019-10-13 19:20:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 19:20:05,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:05,844 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:20:06,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:06,058 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:06,058 INFO L82 PathProgramCache]: Analyzing trace with hash 873328068, now seen corresponding path program 1 times [2019-10-13 19:20:06,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:06,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360177020] [2019-10-13 19:20:06,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,882 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:20:07,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360177020] [2019-10-13 19:20:07,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658308835] [2019-10-13 19:20:07,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:07,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:07,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:07,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:07,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507947418] [2019-10-13 19:20:07,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:07,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:07,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:07,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:07,821 INFO L87 Difference]: Start difference. First operand 738 states and 1164 transitions. Second operand 4 states. [2019-10-13 19:20:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:08,061 INFO L93 Difference]: Finished difference Result 1415 states and 2261 transitions. [2019-10-13 19:20:08,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:08,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 19:20:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:08,067 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 19:20:08,068 INFO L226 Difference]: Without dead ends: 780 [2019-10-13 19:20:08,071 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2019-10-13 19:20:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2019-10-13 19:20:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-13 19:20:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1241 transitions. [2019-10-13 19:20:08,097 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1241 transitions. Word has length 172 [2019-10-13 19:20:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:08,097 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 1241 transitions. [2019-10-13 19:20:08,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1241 transitions. [2019-10-13 19:20:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 19:20:08,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:08,103 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:20:08,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,311 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1965179543, now seen corresponding path program 1 times [2019-10-13 19:20:08,311 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:08,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649469137] [2019-10-13 19:20:08,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,105 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:09,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649469137] [2019-10-13 19:20:09,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164509732] [2019-10-13 19:20:09,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:20:09,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:10,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:10,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-13 19:20:10,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299687128] [2019-10-13 19:20:10,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:20:10,058 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:20:10,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:10,059 INFO L87 Difference]: Start difference. First operand 780 states and 1241 transitions. Second operand 5 states. [2019-10-13 19:20:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:11,096 INFO L93 Difference]: Finished difference Result 1419 states and 2295 transitions. [2019-10-13 19:20:11,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:20:11,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-13 19:20:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:11,103 INFO L225 Difference]: With dead ends: 1419 [2019-10-13 19:20:11,103 INFO L226 Difference]: Without dead ends: 788 [2019-10-13 19:20:11,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-13 19:20:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2019-10-13 19:20:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2019-10-13 19:20:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1254 transitions. [2019-10-13 19:20:11,142 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1254 transitions. Word has length 174 [2019-10-13 19:20:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:11,143 INFO L462 AbstractCegarLoop]: Abstraction has 788 states and 1254 transitions. [2019-10-13 19:20:11,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:20:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1254 transitions. [2019-10-13 19:20:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 19:20:11,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:11,151 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:20:11,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:11,369 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:11,369 INFO L82 PathProgramCache]: Analyzing trace with hash -97511625, now seen corresponding path program 1 times [2019-10-13 19:20:11,369 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:11,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501237357] [2019-10-13 19:20:11,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat