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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:34,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:34,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:34,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:34,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:34,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:34,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:34,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:34,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:34,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:34,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:34,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:34,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:34,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:34,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:34,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:34,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:34,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:34,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:34,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:34,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:34,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:34,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:34,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:34,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:34,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:34,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:34,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:34,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:34,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:34,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:34,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:34,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:34,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:34,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:34,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:34,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:34,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:34,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:34,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:34,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:34,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:18:34,898 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:34,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:34,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:34,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:34,902 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:34,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:34,902 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:34,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:34,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:34,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:34,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:34,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:34,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:34,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:34,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:34,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:34,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:34,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:34,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:34,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:34,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:34,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:34,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:34,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:34,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:34,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:34,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:34,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:34,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:35,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:35,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:35,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:35,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:35,216 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:35,217 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-14 23:18:35,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16bcab04/5d2c54aa840e49e98ee402df753f5f94/FLAG142c60553 [2019-10-14 23:18:35,970 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:35,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-14 23:18:36,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16bcab04/5d2c54aa840e49e98ee402df753f5f94/FLAG142c60553 [2019-10-14 23:18:36,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16bcab04/5d2c54aa840e49e98ee402df753f5f94 [2019-10-14 23:18:36,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:36,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:36,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:36,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:36,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:36,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:36" (1/1) ... [2019-10-14 23:18:36,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65566acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:36, skipping insertion in model container [2019-10-14 23:18:36,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:36" (1/1) ... [2019-10-14 23:18:36,187 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:36,271 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:37,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:37,069 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:37,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:37,271 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:37,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37 WrapperNode [2019-10-14 23:18:37,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:37,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:37,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:37,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:37,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (1/1) ... [2019-10-14 23:18:37,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:37,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:37,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:37,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:37,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (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 [2019-10-14 23:18:37,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:37,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:37,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:37,588 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:18:37,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:18:37,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:18:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:18:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:18:37,591 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:18:37,591 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:18:37,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:18:37,592 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:18:37,593 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:18:37,595 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:18:37,595 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:18:37,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:18:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:18:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:18:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:18:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:18:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:18:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:18:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:18:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:18:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:18:37,599 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:18:37,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:18:37,600 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:18:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:18:37,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:18:37,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:18:37,603 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:18:37,603 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:18:37,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:18:37,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:18:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:18:37,605 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:18:37,605 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:18:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:18:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:18:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:18:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:18:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:18:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:37,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:18:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:18:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:18:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:18:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:18:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:18:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:18:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:18:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:18:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:18:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:18:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:18:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:18:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:18:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:18:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:18:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:18:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:18:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:18:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:18:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:18:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:18:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:18:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:18:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:18:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:18:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:18:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:18:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:18:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:18:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:18:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:18:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:18:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:18:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:18:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:18:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:18:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:18:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:18:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:18:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:18:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:18:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:18:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:18:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-14 23:18:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:18:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:18:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:18:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:18:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:18:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:18:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:18:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:18:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:18:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:18:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:18:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:18:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:18:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:18:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:18:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:18:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:18:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:18:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:40,128 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:40,128 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:18:40,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:40 BoogieIcfgContainer [2019-10-14 23:18:40,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:40,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:40,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:40,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:40,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:36" (1/3) ... [2019-10-14 23:18:40,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3370d0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:40, skipping insertion in model container [2019-10-14 23:18:40,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:37" (2/3) ... [2019-10-14 23:18:40,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3370d0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:40, skipping insertion in model container [2019-10-14 23:18:40,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:40" (3/3) ... [2019-10-14 23:18:40,139 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2019-10-14 23:18:40,150 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:40,160 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:40,173 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:40,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:40,205 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:40,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:40,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:40,205 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:40,205 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:40,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:40,206 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states. [2019-10-14 23:18:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:40,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:40,260 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:40,263 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1312558517, now seen corresponding path program 1 times [2019-10-14 23:18:40,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:40,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301163154] [2019-10-14 23:18:40,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:40,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:40,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:41,902 WARN L191 SmtUtils]: Spent 953.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:42,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301163154] [2019-10-14 23:18:42,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074448174] [2019-10-14 23:18:42,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:43,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:43,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:43,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:43,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-14 23:18:43,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883615405] [2019-10-14 23:18:43,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:43,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:43,245 INFO L87 Difference]: Start difference. First operand 807 states. Second operand 4 states. [2019-10-14 23:18:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:43,480 INFO L93 Difference]: Finished difference Result 1315 states and 2130 transitions. [2019-10-14 23:18:43,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:43,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-14 23:18:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:43,514 INFO L225 Difference]: With dead ends: 1315 [2019-10-14 23:18:43,514 INFO L226 Difference]: Without dead ends: 663 [2019-10-14 23:18:43,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2019-10-14 23:18:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2019-10-14 23:18:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2019-10-14 23:18:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1053 transitions. [2019-10-14 23:18:43,659 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1053 transitions. Word has length 113 [2019-10-14 23:18:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:43,660 INFO L462 AbstractCegarLoop]: Abstraction has 663 states and 1053 transitions. [2019-10-14 23:18:43,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1053 transitions. [2019-10-14 23:18:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 23:18:43,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:43,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:43,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:43,878 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1562455753, now seen corresponding path program 1 times [2019-10-14 23:18:43,880 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:43,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892184652] [2019-10-14 23:18:43,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:43,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:43,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:44,878 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:18:45,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892184652] [2019-10-14 23:18:45,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894824504] [2019-10-14 23:18:45,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:45,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:45,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:46,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:46,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-10-14 23:18:46,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315625824] [2019-10-14 23:18:46,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:46,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:18:46,063 INFO L87 Difference]: Start difference. First operand 663 states and 1053 transitions. Second operand 7 states. [2019-10-14 23:18:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:46,256 INFO L93 Difference]: Finished difference Result 1309 states and 2093 transitions. [2019-10-14 23:18:46,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:46,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-14 23:18:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:46,263 INFO L225 Difference]: With dead ends: 1309 [2019-10-14 23:18:46,263 INFO L226 Difference]: Without dead ends: 674 [2019-10-14 23:18:46,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:18:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-14 23:18:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 670. [2019-10-14 23:18:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-14 23:18:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1065 transitions. [2019-10-14 23:18:46,308 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1065 transitions. Word has length 115 [2019-10-14 23:18:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:46,308 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 1065 transitions. [2019-10-14 23:18:46,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1065 transitions. [2019-10-14 23:18:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:46,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:46,312 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:46,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:46,527 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash 543611026, now seen corresponding path program 1 times [2019-10-14 23:18:46,528 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:46,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889302703] [2019-10-14 23:18:46,528 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:46,528 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:46,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,514 WARN L191 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:47,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889302703] [2019-10-14 23:18:47,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80853390] [2019-10-14 23:18:47,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:48,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:48,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:48,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:48,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:18:48,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453382592] [2019-10-14 23:18:48,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:48,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:48,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:48,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:48,414 INFO L87 Difference]: Start difference. First operand 670 states and 1065 transitions. Second operand 4 states. [2019-10-14 23:18:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:48,522 INFO L93 Difference]: Finished difference Result 1325 states and 2118 transitions. [2019-10-14 23:18:48,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:48,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-14 23:18:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:48,528 INFO L225 Difference]: With dead ends: 1325 [2019-10-14 23:18:48,528 INFO L226 Difference]: Without dead ends: 681 [2019-10-14 23:18:48,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-10-14 23:18:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2019-10-14 23:18:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-14 23:18:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1073 transitions. [2019-10-14 23:18:48,567 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1073 transitions. Word has length 116 [2019-10-14 23:18:48,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:48,568 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1073 transitions. [2019-10-14 23:18:48,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1073 transitions. [2019-10-14 23:18:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:48,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:48,572 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:48,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:48,779 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:48,780 INFO L82 PathProgramCache]: Analyzing trace with hash 246045182, now seen corresponding path program 1 times [2019-10-14 23:18:48,780 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:48,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903220257] [2019-10-14 23:18:48,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:48,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:48,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,670 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:18:50,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903220257] [2019-10-14 23:18:50,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297719088] [2019-10-14 23:18:50,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:50,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:50,867 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:50,867 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-14 23:18:50,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293508229] [2019-10-14 23:18:50,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:50,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:18:50,870 INFO L87 Difference]: Start difference. First operand 679 states and 1073 transitions. Second operand 7 states. [2019-10-14 23:18:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:51,009 INFO L93 Difference]: Finished difference Result 1326 states and 2109 transitions. [2019-10-14 23:18:51,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:51,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-14 23:18:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:51,015 INFO L225 Difference]: With dead ends: 1326 [2019-10-14 23:18:51,015 INFO L226 Difference]: Without dead ends: 688 [2019-10-14 23:18:51,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:18:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-14 23:18:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 679. [2019-10-14 23:18:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-14 23:18:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1073 transitions. [2019-10-14 23:18:51,046 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1073 transitions. Word has length 116 [2019-10-14 23:18:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:51,046 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1073 transitions. [2019-10-14 23:18:51,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1073 transitions. [2019-10-14 23:18:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-14 23:18:51,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:51,049 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:51,256 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:51,257 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 703956050, now seen corresponding path program 1 times [2019-10-14 23:18:51,257 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:51,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651314718] [2019-10-14 23:18:51,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,127 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:52,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651314718] [2019-10-14 23:18:52,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522543540] [2019-10-14 23:18:52,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:52,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:53,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:53,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:18:53,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443381837] [2019-10-14 23:18:53,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:53,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:53,017 INFO L87 Difference]: Start difference. First operand 679 states and 1073 transitions. Second operand 4 states. [2019-10-14 23:18:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:53,301 INFO L93 Difference]: Finished difference Result 1359 states and 2179 transitions. [2019-10-14 23:18:53,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:53,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-14 23:18:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:53,307 INFO L225 Difference]: With dead ends: 1359 [2019-10-14 23:18:53,307 INFO L226 Difference]: Without dead ends: 721 [2019-10-14 23:18:53,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-10-14 23:18:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 718. [2019-10-14 23:18:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-10-14 23:18:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1146 transitions. [2019-10-14 23:18:53,343 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1146 transitions. Word has length 119 [2019-10-14 23:18:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:53,343 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 1146 transitions. [2019-10-14 23:18:53,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1146 transitions. [2019-10-14 23:18:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:18:53,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:53,347 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:53,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:53,559 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:53,560 INFO L82 PathProgramCache]: Analyzing trace with hash 504600262, now seen corresponding path program 1 times [2019-10-14 23:18:53,560 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:53,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411572669] [2019-10-14 23:18:53,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:53,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:53,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,470 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:18:54,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411572669] [2019-10-14 23:18:54,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391003334] [2019-10-14 23:18:54,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:55,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:18:55,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:55,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:18:55,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796217048] [2019-10-14 23:18:55,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:55,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:55,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:55,269 INFO L87 Difference]: Start difference. First operand 718 states and 1146 transitions. Second operand 4 states. [2019-10-14 23:18:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:55,379 INFO L93 Difference]: Finished difference Result 1383 states and 2225 transitions. [2019-10-14 23:18:55,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:55,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-14 23:18:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:55,388 INFO L225 Difference]: With dead ends: 1383 [2019-10-14 23:18:55,388 INFO L226 Difference]: Without dead ends: 718 [2019-10-14 23:18:55,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-10-14 23:18:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-10-14 23:18:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-10-14 23:18:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1141 transitions. [2019-10-14 23:18:55,426 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1141 transitions. Word has length 121 [2019-10-14 23:18:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:55,426 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 1141 transitions. [2019-10-14 23:18:55,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1141 transitions. [2019-10-14 23:18:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:18:55,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:55,431 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:55,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:55,641 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash -2127688715, now seen corresponding path program 1 times [2019-10-14 23:18:55,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:55,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837179812] [2019-10-14 23:18:55,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,655 WARN L191 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:18:56,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837179812] [2019-10-14 23:18:56,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033525092] [2019-10-14 23:18:56,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:57,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:18:57,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:57,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:18:57,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315940883] [2019-10-14 23:18:57,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:57,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:57,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:57,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:57,582 INFO L87 Difference]: Start difference. First operand 718 states and 1141 transitions. Second operand 7 states. [2019-10-14 23:18:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:57,743 INFO L93 Difference]: Finished difference Result 1351 states and 2157 transitions. [2019-10-14 23:18:57,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:57,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-14 23:18:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:57,751 INFO L225 Difference]: With dead ends: 1351 [2019-10-14 23:18:57,752 INFO L226 Difference]: Without dead ends: 732 [2019-10-14 23:18:57,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-14 23:18:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 725. [2019-10-14 23:18:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2019-10-14 23:18:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1152 transitions. [2019-10-14 23:18:57,790 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1152 transitions. Word has length 122 [2019-10-14 23:18:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:57,791 INFO L462 AbstractCegarLoop]: Abstraction has 725 states and 1152 transitions. [2019-10-14 23:18:57,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1152 transitions. [2019-10-14 23:18:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:18:57,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:57,794 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:58,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:58,008 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash 454016772, now seen corresponding path program 1 times [2019-10-14 23:18:58,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:58,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370706894] [2019-10-14 23:18:58,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,098 WARN L191 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,260 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:59,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370706894] [2019-10-14 23:18:59,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593538229] [2019-10-14 23:18:59,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:59,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:18:59,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:59,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:00,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393495051] [2019-10-14 23:19:00,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:00,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:00,001 INFO L87 Difference]: Start difference. First operand 725 states and 1152 transitions. Second operand 7 states. [2019-10-14 23:19:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:00,153 INFO L93 Difference]: Finished difference Result 1351 states and 2156 transitions. [2019-10-14 23:19:00,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:00,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-14 23:19:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:00,159 INFO L225 Difference]: With dead ends: 1351 [2019-10-14 23:19:00,159 INFO L226 Difference]: Without dead ends: 732 [2019-10-14 23:19:00,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-14 23:19:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 722. [2019-10-14 23:19:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-14 23:19:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1146 transitions. [2019-10-14 23:19:00,187 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1146 transitions. Word has length 123 [2019-10-14 23:19:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:00,188 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1146 transitions. [2019-10-14 23:19:00,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1146 transitions. [2019-10-14 23:19:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:00,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:00,190 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:00,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:00,398 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:00,399 INFO L82 PathProgramCache]: Analyzing trace with hash 706764066, now seen corresponding path program 1 times [2019-10-14 23:19:00,399 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:00,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131652266] [2019-10-14 23:19:00,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,393 WARN L191 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:01,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131652266] [2019-10-14 23:19:01,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393982510] [2019-10-14 23:19:01,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:02,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:02,198 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:02,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:02,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518806189] [2019-10-14 23:19:02,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:02,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:02,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:02,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:02,202 INFO L87 Difference]: Start difference. First operand 722 states and 1146 transitions. Second operand 4 states. [2019-10-14 23:19:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:02,286 INFO L93 Difference]: Finished difference Result 1387 states and 2225 transitions. [2019-10-14 23:19:02,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:19:02,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-14 23:19:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:02,292 INFO L225 Difference]: With dead ends: 1387 [2019-10-14 23:19:02,292 INFO L226 Difference]: Without dead ends: 722 [2019-10-14 23:19:02,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-10-14 23:19:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2019-10-14 23:19:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-14 23:19:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1143 transitions. [2019-10-14 23:19:02,318 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1143 transitions. Word has length 123 [2019-10-14 23:19:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:02,318 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1143 transitions. [2019-10-14 23:19:02,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1143 transitions. [2019-10-14 23:19:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:19:02,321 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:02,321 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:02,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:02,533 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1900302799, now seen corresponding path program 1 times [2019-10-14 23:19:02,533 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:02,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525265871] [2019-10-14 23:19:02,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:02,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:02,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,436 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:03,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525265871] [2019-10-14 23:19:03,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924820573] [2019-10-14 23:19:03,800 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 [2019-10-14 23:19:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:04,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:04,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:04,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:04,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898380961] [2019-10-14 23:19:04,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:04,338 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:04,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:04,338 INFO L87 Difference]: Start difference. First operand 722 states and 1143 transitions. Second operand 4 states. [2019-10-14 23:19:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:04,571 INFO L93 Difference]: Finished difference Result 1383 states and 2219 transitions. [2019-10-14 23:19:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:04,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-14 23:19:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:04,578 INFO L225 Difference]: With dead ends: 1383 [2019-10-14 23:19:04,578 INFO L226 Difference]: Without dead ends: 764 [2019-10-14 23:19:04,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-14 23:19:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2019-10-14 23:19:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-10-14 23:19:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1220 transitions. [2019-10-14 23:19:04,605 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1220 transitions. Word has length 124 [2019-10-14 23:19:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:04,606 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1220 transitions. [2019-10-14 23:19:04,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1220 transitions. [2019-10-14 23:19:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:19:04,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:04,608 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:04,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:04,823 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:04,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:04,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1779748070, now seen corresponding path program 1 times [2019-10-14 23:19:04,824 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:04,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412398714] [2019-10-14 23:19:04,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:04,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:04,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,696 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:05,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412398714] [2019-10-14 23:19:05,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402616773] [2019-10-14 23:19:05,964 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 [2019-10-14 23:19:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:19:06,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-14 23:19:06,600 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:06,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 23:19:06,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914280167] [2019-10-14 23:19:06,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:19:06,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:19:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:06,602 INFO L87 Difference]: Start difference. First operand 764 states and 1220 transitions. Second operand 3 states. [2019-10-14 23:19:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:06,766 INFO L93 Difference]: Finished difference Result 1990 states and 3213 transitions. [2019-10-14 23:19:06,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:19:06,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-14 23:19:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:06,777 INFO L225 Difference]: With dead ends: 1990 [2019-10-14 23:19:06,777 INFO L226 Difference]: Without dead ends: 1375 [2019-10-14 23:19:06,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2019-10-14 23:19:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1304. [2019-10-14 23:19:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-14 23:19:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 2105 transitions. [2019-10-14 23:19:06,860 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 2105 transitions. Word has length 126 [2019-10-14 23:19:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:06,862 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 2105 transitions. [2019-10-14 23:19:06,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:19:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 2105 transitions. [2019-10-14 23:19:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-14 23:19:06,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:06,871 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:07,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:07,079 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:07,079 INFO L82 PathProgramCache]: Analyzing trace with hash -979147877, now seen corresponding path program 1 times [2019-10-14 23:19:07,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:07,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477171892] [2019-10-14 23:19:07,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:07,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:07,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,903 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,368 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-14 23:19:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:08,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477171892] [2019-10-14 23:19:08,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243143950] [2019-10-14 23:19:08,572 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 [2019-10-14 23:19:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-14 23:19:09,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-14 23:19:09,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:09,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2019-10-14 23:19:09,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117811078] [2019-10-14 23:19:09,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:19:09,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:19:09,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:09,263 INFO L87 Difference]: Start difference. First operand 1304 states and 2105 transitions. Second operand 6 states. [2019-10-14 23:19:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:10,014 INFO L93 Difference]: Finished difference Result 3226 states and 5207 transitions. [2019-10-14 23:19:10,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:10,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2019-10-14 23:19:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:10,029 INFO L225 Difference]: With dead ends: 3226 [2019-10-14 23:19:10,030 INFO L226 Difference]: Without dead ends: 2071 [2019-10-14 23:19:10,036 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:19:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2019-10-14 23:19:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2067. [2019-10-14 23:19:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2019-10-14 23:19:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3313 transitions. [2019-10-14 23:19:10,117 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3313 transitions. Word has length 175 [2019-10-14 23:19:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:10,117 INFO L462 AbstractCegarLoop]: Abstraction has 2067 states and 3313 transitions. [2019-10-14 23:19:10,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:19:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3313 transitions. [2019-10-14 23:19:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-14 23:19:10,126 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:10,126 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:10,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:10,334 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2093874489, now seen corresponding path program 1 times [2019-10-14 23:19:10,336 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:10,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180723328] [2019-10-14 23:19:10,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:10,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:10,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat