./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:36:20,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:36:20,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:36:20,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:36:20,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:36:20,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:36:20,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:36:20,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:36:20,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:36:20,172 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:36:20,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:36:20,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:36:20,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:36:20,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:36:20,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:36:20,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:36:20,174 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2025-02-05 15:36:20,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:36:20,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:36:20,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:36:20,377 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:36:20,377 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:36:20,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2025-02-05 15:36:21,601 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44ee59db4/2d35cb91155d4b65a3b0db8f57c3e3f0/FLAGb9565bea2 [2025-02-05 15:36:21,939 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:36:21,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2025-02-05 15:36:21,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44ee59db4/2d35cb91155d4b65a3b0db8f57c3e3f0/FLAGb9565bea2 [2025-02-05 15:36:21,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44ee59db4/2d35cb91155d4b65a3b0db8f57c3e3f0 [2025-02-05 15:36:21,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:36:21,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:36:21,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:36:21,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:36:21,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:36:21,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:36:21" (1/1) ... [2025-02-05 15:36:21,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dba2e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:21, skipping insertion in model container [2025-02-05 15:36:21,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:36:21" (1/1) ... [2025-02-05 15:36:22,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:36:22,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2025-02-05 15:36:22,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:36:22,425 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:36:22,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [837] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1024] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1121] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1476] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3091] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3126] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3135] [2025-02-05 15:36:22,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3501] [2025-02-05 15:36:22,486 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2025-02-05 15:36:22,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:36:22,514 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:36:22,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22 WrapperNode [2025-02-05 15:36:22,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:36:22,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:36:22,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:36:22,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:36:22,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,605 INFO L138 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 962 [2025-02-05 15:36:22,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:36:22,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:36:22,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:36:22,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:36:22,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,663 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-02-05 15:36:22,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:36:22,713 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:36:22,714 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:36:22,714 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:36:22,715 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (1/1) ... [2025-02-05 15:36:22,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:36:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:22,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:36:22,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:36:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-02-05 15:36:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-02-05 15:36:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:36:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:36:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:36:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:36:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:36:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:36:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:36:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:36:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:36:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:36:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:36:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:36:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:36:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:36:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:36:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:36:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:36:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:36:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:36:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:36:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:36:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:36:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:36:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:36:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:36:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:36:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:36:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:36:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:36:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:36:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:36:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:36:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:36:22,962 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:36:22,968 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:36:23,085 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2423-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~20#1; [2025-02-05 15:36:23,085 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2451: #res#1 := ~retValue_acc~21#1; [2025-02-05 15:36:23,108 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L834: #res := ~retValue_acc~5; [2025-02-05 15:36:23,132 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L756: #res := ~retValue_acc~3; [2025-02-05 15:36:23,137 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1550: #res := ~retValue_acc~8; [2025-02-05 15:36:23,145 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1727: #res := ~retValue_acc~9; [2025-02-05 15:36:23,190 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3079: #res := ~retValue_acc~25; [2025-02-05 15:36:23,360 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2304-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~17#1; [2025-02-05 15:36:23,360 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2333: #res#1 := ~retValue_acc~18#1; [2025-02-05 15:36:23,360 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2367-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~19#1; [2025-02-05 15:36:23,418 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2496: #res := ~retValue_acc~23; [2025-02-05 15:36:23,432 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L795: #res := ~retValue_acc~4; [2025-02-05 15:36:23,568 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2264: #res := ~retValue_acc~16; [2025-02-05 15:36:23,583 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1770: #res := ~retValue_acc~11; [2025-02-05 15:36:23,625 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1819-1: isEmpty_#res#1 := isEmpty_~retValue_acc~13#1; [2025-02-05 15:36:23,731 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2482-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~22#1; [2025-02-05 15:36:23,772 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1899-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~14#1; [2025-02-05 15:36:23,772 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1912-1: isIdle_#res#1 := isIdle_~retValue_acc~15#1; [2025-02-05 15:36:23,812 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: #res := ~retValue_acc~1; [2025-02-05 15:36:23,861 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1473-1: main_#res#1 := main_~retValue_acc~7#1; [2025-02-05 15:36:23,861 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3123-1: valid_product_#res#1 := valid_product_~retValue_acc~28#1; [2025-02-05 15:36:23,870 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~0; [2025-02-05 15:36:23,871 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1736: #res := ~retValue_acc~10; [2025-02-05 15:36:23,875 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: #res := ~retValue_acc~2; [2025-02-05 15:36:24,056 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2025-02-05 15:36:24,056 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:36:24,080 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:36:24,080 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:36:24,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:36:24 BoogieIcfgContainer [2025-02-05 15:36:24,080 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:36:24,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:36:24,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:36:24,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:36:24,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:36:21" (1/3) ... [2025-02-05 15:36:24,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a10dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:36:24, skipping insertion in model container [2025-02-05 15:36:24,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:36:22" (2/3) ... [2025-02-05 15:36:24,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a10dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:36:24, skipping insertion in model container [2025-02-05 15:36:24,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:36:24" (3/3) ... [2025-02-05 15:36:24,089 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2025-02-05 15:36:24,100 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:36:24,103 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product31.cil.c that has 27 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:36:24,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:36:24,168 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@746a3037, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:36:24,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:36:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 465 states have (on average 1.6795698924731184) internal successors, (781), 487 states have internal predecessors, (781), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2025-02-05 15:36:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:36:24,213 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:24,214 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:24,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:24,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2090962572, now seen corresponding path program 1 times [2025-02-05 15:36:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111938596] [2025-02-05 15:36:24,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:24,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:36:24,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:36:24,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:24,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111938596] [2025-02-05 15:36:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111938596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553823870] [2025-02-05 15:36:24,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:24,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:24,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:24,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:24,818 INFO L87 Difference]: Start difference. First operand has 596 states, 465 states have (on average 1.6795698924731184) internal successors, (781), 487 states have internal predecessors, (781), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:24,993 INFO L93 Difference]: Finished difference Result 1172 states and 1944 transitions. [2025-02-05 15:36:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:24,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2025-02-05 15:36:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:25,012 INFO L225 Difference]: With dead ends: 1172 [2025-02-05 15:36:25,012 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:36:25,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,025 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 5 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:25,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2891 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:36:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:36:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 459 states have (on average 1.673202614379085) internal successors, (768), 478 states have internal predecessors, (768), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 967 transitions. [2025-02-05 15:36:25,124 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 967 transitions. Word has length 122 [2025-02-05 15:36:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:25,125 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 967 transitions. [2025-02-05 15:36:25,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 967 transitions. [2025-02-05 15:36:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-05 15:36:25,131 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:25,132 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:25,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:36:25,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:25,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1360950941, now seen corresponding path program 1 times [2025-02-05 15:36:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:25,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626024628] [2025-02-05 15:36:25,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:25,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:25,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:36:25,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:36:25,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:25,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626024628] [2025-02-05 15:36:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626024628] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951464235] [2025-02-05 15:36:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:25,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:25,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:25,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,363 INFO L87 Difference]: Start difference. First operand 587 states and 967 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:25,448 INFO L93 Difference]: Finished difference Result 1156 states and 1911 transitions. [2025-02-05 15:36:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2025-02-05 15:36:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:25,457 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:36:25,457 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:36:25,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,460 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 4 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:25,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2864 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:36:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:36:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 459 states have (on average 1.671023965141612) internal successors, (767), 478 states have internal predecessors, (767), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 966 transitions. [2025-02-05 15:36:25,496 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 966 transitions. Word has length 123 [2025-02-05 15:36:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:25,497 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 966 transitions. [2025-02-05 15:36:25,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 966 transitions. [2025-02-05 15:36:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:36:25,503 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:25,503 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:25,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:36:25,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:25,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1360369207, now seen corresponding path program 1 times [2025-02-05 15:36:25,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383581786] [2025-02-05 15:36:25,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:25,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:36:25,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:36:25,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:25,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383581786] [2025-02-05 15:36:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383581786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:25,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873879943] [2025-02-05 15:36:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:25,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:25,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:25,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,659 INFO L87 Difference]: Start difference. First operand 587 states and 966 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:25,766 INFO L93 Difference]: Finished difference Result 1156 states and 1910 transitions. [2025-02-05 15:36:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:25,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2025-02-05 15:36:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:25,774 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:36:25,774 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:36:25,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,781 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 3 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:25,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2864 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:36:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:36:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 459 states have (on average 1.6688453159041394) internal successors, (766), 478 states have internal predecessors, (766), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 965 transitions. [2025-02-05 15:36:25,823 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 965 transitions. Word has length 124 [2025-02-05 15:36:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:25,823 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 965 transitions. [2025-02-05 15:36:25,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 965 transitions. [2025-02-05 15:36:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:36:25,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:25,830 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:25,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:36:25,831 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:25,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1387743942, now seen corresponding path program 1 times [2025-02-05 15:36:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:25,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171795694] [2025-02-05 15:36:25,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:25,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:25,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:36:25,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:36:25,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:25,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171795694] [2025-02-05 15:36:25,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171795694] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:25,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:25,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847153609] [2025-02-05 15:36:25,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:25,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:25,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:25,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:25,998 INFO L87 Difference]: Start difference. First operand 587 states and 965 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:26,044 INFO L93 Difference]: Finished difference Result 1156 states and 1909 transitions. [2025-02-05 15:36:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:26,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2025-02-05 15:36:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:26,049 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:36:26,049 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:36:26,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:26,052 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 2 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:26,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2864 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:36:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:36:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 459 states have (on average 1.6666666666666667) internal successors, (765), 478 states have internal predecessors, (765), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 964 transitions. [2025-02-05 15:36:26,081 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 964 transitions. Word has length 125 [2025-02-05 15:36:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:26,081 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 964 transitions. [2025-02-05 15:36:26,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 964 transitions. [2025-02-05 15:36:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-05 15:36:26,085 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:26,085 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:26,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:36:26,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:26,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash 492810502, now seen corresponding path program 1 times [2025-02-05 15:36:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186390473] [2025-02-05 15:36:26,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:26,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:36:26,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:36:26,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:26,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186390473] [2025-02-05 15:36:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186390473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:26,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283149938] [2025-02-05 15:36:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:26,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:26,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:26,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:26,230 INFO L87 Difference]: Start difference. First operand 587 states and 964 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:26,278 INFO L93 Difference]: Finished difference Result 1156 states and 1908 transitions. [2025-02-05 15:36:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2025-02-05 15:36:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:26,282 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:36:26,282 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:36:26,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:26,285 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 1 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:26,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2864 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:26,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:36:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:36:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 459 states have (on average 1.6644880174291938) internal successors, (764), 478 states have internal predecessors, (764), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 963 transitions. [2025-02-05 15:36:26,303 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 963 transitions. Word has length 126 [2025-02-05 15:36:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:26,304 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 963 transitions. [2025-02-05 15:36:26,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 963 transitions. [2025-02-05 15:36:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:36:26,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:26,307 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:26,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:36:26,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:26,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1389627351, now seen corresponding path program 1 times [2025-02-05 15:36:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599972661] [2025-02-05 15:36:26,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:26,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:36:26,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:36:26,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:26,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:26,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599972661] [2025-02-05 15:36:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599972661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:26,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:26,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 15:36:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333475946] [2025-02-05 15:36:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:26,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 15:36:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:26,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 15:36:26,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:26,529 INFO L87 Difference]: Start difference. First operand 587 states and 963 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:26,704 INFO L93 Difference]: Finished difference Result 1122 states and 1840 transitions. [2025-02-05 15:36:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:36:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2025-02-05 15:36:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:26,709 INFO L225 Difference]: With dead ends: 1122 [2025-02-05 15:36:26,709 INFO L226 Difference]: Without dead ends: 602 [2025-02-05 15:36:26,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:26,712 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 91 mSDsluCounter, 6574 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7525 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:26,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7525 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:36:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-02-05 15:36:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2025-02-05 15:36:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 490 states have internal predecessors, (779), 103 states have call successors, (103), 26 states have call predecessors, (103), 27 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2025-02-05 15:36:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 982 transitions. [2025-02-05 15:36:26,737 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 982 transitions. Word has length 127 [2025-02-05 15:36:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:26,737 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 982 transitions. [2025-02-05 15:36:26,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 982 transitions. [2025-02-05 15:36:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:36:26,743 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:26,743 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:26,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:36:26,744 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:26,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1823531658, now seen corresponding path program 1 times [2025-02-05 15:36:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:26,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611412275] [2025-02-05 15:36:26,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:26,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:26,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:36:26,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:36:26,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:26,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611412275] [2025-02-05 15:36:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611412275] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:36:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442155831] [2025-02-05 15:36:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:26,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:26,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:26,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:26,839 INFO L87 Difference]: Start difference. First operand 600 states and 982 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:26,871 INFO L93 Difference]: Finished difference Result 1174 states and 1934 transitions. [2025-02-05 15:36:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:36:26,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2025-02-05 15:36:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:26,875 INFO L225 Difference]: With dead ends: 1174 [2025-02-05 15:36:26,875 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:36:26,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:36:26,878 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 0 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:26,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2866 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:36:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:36:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 453 states have (on average 1.6556291390728477) internal successors, (750), 472 states have internal predecessors, (750), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 949 transitions. [2025-02-05 15:36:26,897 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 949 transitions. Word has length 127 [2025-02-05 15:36:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:26,897 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 949 transitions. [2025-02-05 15:36:26,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 949 transitions. [2025-02-05 15:36:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 15:36:26,901 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:26,901 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:26,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:36:26,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:26,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1368532774, now seen corresponding path program 1 times [2025-02-05 15:36:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042440160] [2025-02-05 15:36:26,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:26,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:36:26,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:36:26,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:26,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:27,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042440160] [2025-02-05 15:36:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042440160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:27,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:36:27,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817143724] [2025-02-05 15:36:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:27,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:36:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:27,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:36:27,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:36:27,053 INFO L87 Difference]: Start difference. First operand 581 states and 949 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:27,202 INFO L93 Difference]: Finished difference Result 1119 states and 1832 transitions. [2025-02-05 15:36:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:27,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2025-02-05 15:36:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:27,207 INFO L225 Difference]: With dead ends: 1119 [2025-02-05 15:36:27,207 INFO L226 Difference]: Without dead ends: 590 [2025-02-05 15:36:27,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:27,209 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 55 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4501 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:27,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4501 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:36:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-02-05 15:36:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-02-05 15:36:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 472 states have internal predecessors, (746), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 945 transitions. [2025-02-05 15:36:27,225 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 945 transitions. Word has length 128 [2025-02-05 15:36:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:27,225 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 945 transitions. [2025-02-05 15:36:27,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 945 transitions. [2025-02-05 15:36:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 15:36:27,228 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:27,229 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:27,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:36:27,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:27,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash 548535438, now seen corresponding path program 1 times [2025-02-05 15:36:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935453251] [2025-02-05 15:36:27,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:27,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:27,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:36:27,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:36:27,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:27,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:27,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935453251] [2025-02-05 15:36:27,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935453251] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:36:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189840053] [2025-02-05 15:36:27,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:27,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:36:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:27,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:36:27,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:36:27,375 INFO L87 Difference]: Start difference. First operand 581 states and 945 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:27,509 INFO L93 Difference]: Finished difference Result 1119 states and 1828 transitions. [2025-02-05 15:36:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2025-02-05 15:36:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:27,513 INFO L225 Difference]: With dead ends: 1119 [2025-02-05 15:36:27,513 INFO L226 Difference]: Without dead ends: 590 [2025-02-05 15:36:27,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:27,516 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 54 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4501 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:27,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4501 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:36:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-02-05 15:36:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-02-05 15:36:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 453 states have (on average 1.6379690949227372) internal successors, (742), 472 states have internal predecessors, (742), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 941 transitions. [2025-02-05 15:36:27,531 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 941 transitions. Word has length 129 [2025-02-05 15:36:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:27,531 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 941 transitions. [2025-02-05 15:36:27,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 941 transitions. [2025-02-05 15:36:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 15:36:27,534 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:27,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:27,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:36:27,535 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:27,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -410399523, now seen corresponding path program 1 times [2025-02-05 15:36:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138776347] [2025-02-05 15:36:27,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:27,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 15:36:27,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 15:36:27,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:27,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138776347] [2025-02-05 15:36:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138776347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:27,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:27,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:36:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769230692] [2025-02-05 15:36:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:27,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:36:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:27,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:36:27,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:36:27,678 INFO L87 Difference]: Start difference. First operand 581 states and 941 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:27,806 INFO L93 Difference]: Finished difference Result 1119 states and 1824 transitions. [2025-02-05 15:36:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:27,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2025-02-05 15:36:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:27,811 INFO L225 Difference]: With dead ends: 1119 [2025-02-05 15:36:27,811 INFO L226 Difference]: Without dead ends: 590 [2025-02-05 15:36:27,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:27,813 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 53 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4483 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:27,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4483 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:36:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-02-05 15:36:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-02-05 15:36:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 453 states have (on average 1.6291390728476822) internal successors, (738), 472 states have internal predecessors, (738), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 937 transitions. [2025-02-05 15:36:27,830 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 937 transitions. Word has length 130 [2025-02-05 15:36:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:27,830 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 937 transitions. [2025-02-05 15:36:27,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 937 transitions. [2025-02-05 15:36:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 15:36:27,834 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:27,834 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:27,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 15:36:27,834 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:27,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash -359132980, now seen corresponding path program 1 times [2025-02-05 15:36:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:27,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775865496] [2025-02-05 15:36:27,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:27,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 15:36:27,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 15:36:27,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:27,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775865496] [2025-02-05 15:36:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775865496] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:36:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075719319] [2025-02-05 15:36:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:27,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:36:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:27,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:36:27,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:27,970 INFO L87 Difference]: Start difference. First operand 581 states and 937 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:28,029 INFO L93 Difference]: Finished difference Result 1110 states and 1806 transitions. [2025-02-05 15:36:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:36:28,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 130 [2025-02-05 15:36:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:28,034 INFO L225 Difference]: With dead ends: 1110 [2025-02-05 15:36:28,034 INFO L226 Difference]: Without dead ends: 560 [2025-02-05 15:36:28,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:36:28,037 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 84 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:28,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5483 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-02-05 15:36:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-02-05 15:36:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 432 states have (on average 1.6296296296296295) internal successors, (704), 451 states have internal predecessors, (704), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 903 transitions. [2025-02-05 15:36:28,053 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 903 transitions. Word has length 130 [2025-02-05 15:36:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:28,054 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 903 transitions. [2025-02-05 15:36:28,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 903 transitions. [2025-02-05 15:36:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-02-05 15:36:28,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:28,057 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:28,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 15:36:28,058 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:28,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash -331119631, now seen corresponding path program 1 times [2025-02-05 15:36:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834768526] [2025-02-05 15:36:28,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:28,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:28,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-02-05 15:36:28,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-02-05 15:36:28,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:28,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834768526] [2025-02-05 15:36:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834768526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:28,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:36:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569747617] [2025-02-05 15:36:28,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:28,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:36:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:28,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:36:28,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:36:28,187 INFO L87 Difference]: Start difference. First operand 560 states and 903 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:28,249 INFO L93 Difference]: Finished difference Result 1089 states and 1772 transitions. [2025-02-05 15:36:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2025-02-05 15:36:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:28,253 INFO L225 Difference]: With dead ends: 1089 [2025-02-05 15:36:28,253 INFO L226 Difference]: Without dead ends: 560 [2025-02-05 15:36:28,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:28,256 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 17 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:28,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4421 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-02-05 15:36:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-02-05 15:36:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 451 states have internal predecessors, (703), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 902 transitions. [2025-02-05 15:36:28,272 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 902 transitions. Word has length 131 [2025-02-05 15:36:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:28,273 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 902 transitions. [2025-02-05 15:36:28,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 902 transitions. [2025-02-05 15:36:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-05 15:36:28,277 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:28,277 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:28,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 15:36:28,278 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:28,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1868049632, now seen corresponding path program 1 times [2025-02-05 15:36:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126888318] [2025-02-05 15:36:28,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:28,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-05 15:36:28,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-05 15:36:28,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:28,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126888318] [2025-02-05 15:36:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126888318] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:36:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246068933] [2025-02-05 15:36:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:28,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:36:28,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:28,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:36:28,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:36:28,400 INFO L87 Difference]: Start difference. First operand 560 states and 902 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:28,473 INFO L93 Difference]: Finished difference Result 1089 states and 1771 transitions. [2025-02-05 15:36:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:28,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-02-05 15:36:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:28,477 INFO L225 Difference]: With dead ends: 1089 [2025-02-05 15:36:28,477 INFO L226 Difference]: Without dead ends: 560 [2025-02-05 15:36:28,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:36:28,480 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 16 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:28,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4421 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-02-05 15:36:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-02-05 15:36:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 432 states have (on average 1.625) internal successors, (702), 451 states have internal predecessors, (702), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 901 transitions. [2025-02-05 15:36:28,497 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 901 transitions. Word has length 132 [2025-02-05 15:36:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:28,497 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 901 transitions. [2025-02-05 15:36:28,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:36:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 901 transitions. [2025-02-05 15:36:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-02-05 15:36:28,501 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:28,501 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:28,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 15:36:28,502 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:28,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1064312660, now seen corresponding path program 1 times [2025-02-05 15:36:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309593762] [2025-02-05 15:36:28,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:28,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:28,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:36:28,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:36:28,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:28,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:36:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309593762] [2025-02-05 15:36:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309593762] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:36:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-05 15:36:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061418873] [2025-02-05 15:36:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:28,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:36:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:28,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:36:28,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:28,725 INFO L87 Difference]: Start difference. First operand 560 states and 901 transitions. Second operand has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:28,812 INFO L93 Difference]: Finished difference Result 1083 states and 1759 transitions. [2025-02-05 15:36:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:36:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2025-02-05 15:36:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:28,818 INFO L225 Difference]: With dead ends: 1083 [2025-02-05 15:36:28,818 INFO L226 Difference]: Without dead ends: 560 [2025-02-05 15:36:28,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:28,820 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 6 mSDsluCounter, 7058 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7943 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:28,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7943 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:36:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-02-05 15:36:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-02-05 15:36:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 432 states have (on average 1.6226851851851851) internal successors, (701), 451 states have internal predecessors, (701), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:36:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 900 transitions. [2025-02-05 15:36:28,834 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 900 transitions. Word has length 133 [2025-02-05 15:36:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:28,835 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 900 transitions. [2025-02-05 15:36:28,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:36:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 900 transitions. [2025-02-05 15:36:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-02-05 15:36:28,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:28,838 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2025-02-05 15:36:28,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 15:36:28,838 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:28,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash -912693997, now seen corresponding path program 1 times [2025-02-05 15:36:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110400444] [2025-02-05 15:36:28,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:28,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 15:36:28,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 15:36:28,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:28,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:36:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110400444] [2025-02-05 15:36:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110400444] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738091016] [2025-02-05 15:36:28,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:28,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:28,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:28,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:36:29,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 15:36:29,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 15:36:29,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:29,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:29,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:36:29,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:29,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738091016] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:36:29,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506965738] [2025-02-05 15:36:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:29,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:36:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:29,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:36:29,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:29,349 INFO L87 Difference]: Start difference. First operand 560 states and 900 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:29,808 INFO L93 Difference]: Finished difference Result 1083 states and 1784 transitions. [2025-02-05 15:36:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2025-02-05 15:36:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:29,813 INFO L225 Difference]: With dead ends: 1083 [2025-02-05 15:36:29,813 INFO L226 Difference]: Without dead ends: 568 [2025-02-05 15:36:29,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:29,817 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 856 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:29,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2254 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:36:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-02-05 15:36:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-02-05 15:36:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 458 states have internal predecessors, (713), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2025-02-05 15:36:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 913 transitions. [2025-02-05 15:36:29,835 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 913 transitions. Word has length 134 [2025-02-05 15:36:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:29,835 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 913 transitions. [2025-02-05 15:36:29,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 913 transitions. [2025-02-05 15:36:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:36:29,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:29,839 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:29,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:36:30,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 15:36:30,040 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:30,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1081517613, now seen corresponding path program 1 times [2025-02-05 15:36:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844707610] [2025-02-05 15:36:30,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:30,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:30,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:36:30,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:36:30,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:30,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:36:30,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844707610] [2025-02-05 15:36:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844707610] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154553421] [2025-02-05 15:36:30,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:30,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:30,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:30,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:30,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:36:30,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:36:30,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:36:30,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:30,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:30,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:36:30,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:30,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154553421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:36:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694651802] [2025-02-05 15:36:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:30,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:36:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:30,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:36:30,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:30,593 INFO L87 Difference]: Start difference. First operand 568 states and 913 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:31,085 INFO L93 Difference]: Finished difference Result 1099 states and 1807 transitions. [2025-02-05 15:36:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2025-02-05 15:36:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:31,089 INFO L225 Difference]: With dead ends: 1099 [2025-02-05 15:36:31,090 INFO L226 Difference]: Without dead ends: 576 [2025-02-05 15:36:31,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:31,092 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 847 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:31,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2251 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:36:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-02-05 15:36:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-02-05 15:36:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 446 states have (on average 1.6255605381165918) internal successors, (725), 465 states have internal predecessors, (725), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (99), 95 states have call predecessors, (99), 97 states have call successors, (99) [2025-02-05 15:36:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 926 transitions. [2025-02-05 15:36:31,113 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 926 transitions. Word has length 136 [2025-02-05 15:36:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:31,113 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 926 transitions. [2025-02-05 15:36:31,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 926 transitions. [2025-02-05 15:36:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 15:36:31,116 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:31,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:31,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:36:31,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 15:36:31,317 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:31,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash -610085837, now seen corresponding path program 1 times [2025-02-05 15:36:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:31,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076113861] [2025-02-05 15:36:31,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:31,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:36:31,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:36:31,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:31,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:36:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076113861] [2025-02-05 15:36:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076113861] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640638996] [2025-02-05 15:36:31,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:31,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:31,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:36:31,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:36:31,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:36:31,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:31,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:31,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:36:31,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:31,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640638996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:36:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162714425] [2025-02-05 15:36:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:31,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:36:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:31,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:36:31,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:31,864 INFO L87 Difference]: Start difference. First operand 576 states and 926 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:32,240 INFO L93 Difference]: Finished difference Result 1115 states and 1830 transitions. [2025-02-05 15:36:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:32,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2025-02-05 15:36:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:32,244 INFO L225 Difference]: With dead ends: 1115 [2025-02-05 15:36:32,244 INFO L226 Difference]: Without dead ends: 584 [2025-02-05 15:36:32,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:32,247 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 840 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:32,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 2248 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:36:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-02-05 15:36:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2025-02-05 15:36:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 453 states have (on average 1.6269315673289184) internal successors, (737), 472 states have internal predecessors, (737), 102 states have call successors, (102), 29 states have call predecessors, (102), 28 states have return successors, (100), 95 states have call predecessors, (100), 97 states have call successors, (100) [2025-02-05 15:36:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 939 transitions. [2025-02-05 15:36:32,263 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 939 transitions. Word has length 138 [2025-02-05 15:36:32,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:32,263 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 939 transitions. [2025-02-05 15:36:32,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 939 transitions. [2025-02-05 15:36:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-05 15:36:32,266 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:32,266 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:32,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:36:32,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:32,470 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:32,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash 736458983, now seen corresponding path program 1 times [2025-02-05 15:36:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142000360] [2025-02-05 15:36:32,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:32,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:36:32,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:36:32,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:32,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:36:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142000360] [2025-02-05 15:36:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142000360] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484561236] [2025-02-05 15:36:32,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:32,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:32,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:36:32,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:36:32,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:36:32,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:32,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:32,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:36:32,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:33,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484561236] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:36:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965302439] [2025-02-05 15:36:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:33,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:36:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:33,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:36:33,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:33,015 INFO L87 Difference]: Start difference. First operand 584 states and 939 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:33,425 INFO L93 Difference]: Finished difference Result 1131 states and 1853 transitions. [2025-02-05 15:36:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2025-02-05 15:36:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:33,432 INFO L225 Difference]: With dead ends: 1131 [2025-02-05 15:36:33,432 INFO L226 Difference]: Without dead ends: 592 [2025-02-05 15:36:33,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:36:33,434 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 829 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:33,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2245 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:36:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-02-05 15:36:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2025-02-05 15:36:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 460 states have (on average 1.6282608695652174) internal successors, (749), 479 states have internal predecessors, (749), 102 states have call successors, (102), 30 states have call predecessors, (102), 29 states have return successors, (101), 95 states have call predecessors, (101), 97 states have call successors, (101) [2025-02-05 15:36:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 952 transitions. [2025-02-05 15:36:33,451 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 952 transitions. Word has length 140 [2025-02-05 15:36:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:33,451 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 952 transitions. [2025-02-05 15:36:33,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 952 transitions. [2025-02-05 15:36:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-05 15:36:33,455 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:33,455 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:33,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:36:33,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 15:36:33,656 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:33,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2074105235, now seen corresponding path program 1 times [2025-02-05 15:36:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370269887] [2025-02-05 15:36:33,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:33,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:36:33,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:36:33,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:33,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:36:33,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370269887] [2025-02-05 15:36:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370269887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392905083] [2025-02-05 15:36:33,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:33,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:33,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:36:33,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:36:33,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:36:33,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:33,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:33,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:36:33,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:34,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392905083] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:34,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:34,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 15:36:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748797244] [2025-02-05 15:36:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:34,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:36:34,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:34,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:36:34,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:36:34,080 INFO L87 Difference]: Start difference. First operand 592 states and 952 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:34,526 INFO L93 Difference]: Finished difference Result 1141 states and 1880 transitions. [2025-02-05 15:36:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:36:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2025-02-05 15:36:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:34,530 INFO L225 Difference]: With dead ends: 1141 [2025-02-05 15:36:34,530 INFO L226 Difference]: Without dead ends: 594 [2025-02-05 15:36:34,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:36:34,532 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 825 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:34,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 2245 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:36:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2025-02-05 15:36:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2025-02-05 15:36:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.6182212581344901) internal successors, (746), 481 states have internal predecessors, (746), 102 states have call successors, (102), 30 states have call predecessors, (102), 30 states have return successors, (102), 95 states have call predecessors, (102), 97 states have call successors, (102) [2025-02-05 15:36:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 950 transitions. [2025-02-05 15:36:34,549 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 950 transitions. Word has length 142 [2025-02-05 15:36:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:34,549 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 950 transitions. [2025-02-05 15:36:34,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 950 transitions. [2025-02-05 15:36:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-05 15:36:34,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:34,552 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:34,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 15:36:34,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:34,753 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:34,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash -530904621, now seen corresponding path program 1 times [2025-02-05 15:36:34,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:34,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439512852] [2025-02-05 15:36:34,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:34,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:36:34,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:36:34,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:34,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439512852] [2025-02-05 15:36:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439512852] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659384122] [2025-02-05 15:36:34,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:34,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:34,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 15:36:35,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:36:35,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:36:35,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:35,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:35,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 15:36:35,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:35,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659384122] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:35,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-02-05 15:36:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094821941] [2025-02-05 15:36:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:35,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:36:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:35,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:36:35,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:36:35,355 INFO L87 Difference]: Start difference. First operand 594 states and 950 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:36:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:37,474 INFO L93 Difference]: Finished difference Result 1875 states and 3065 transitions. [2025-02-05 15:36:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 15:36:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2025-02-05 15:36:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:37,485 INFO L225 Difference]: With dead ends: 1875 [2025-02-05 15:36:37,485 INFO L226 Difference]: Without dead ends: 1326 [2025-02-05 15:36:37,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:36:37,488 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 2216 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 4081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:37,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 2019 Invalid, 4081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-05 15:36:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2025-02-05 15:36:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1238. [2025-02-05 15:36:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 960 states have (on average 1.6291666666666667) internal successors, (1564), 999 states have internal predecessors, (1564), 212 states have call successors, (212), 58 states have call predecessors, (212), 65 states have return successors, (240), 205 states have call predecessors, (240), 207 states have call successors, (240) [2025-02-05 15:36:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 2016 transitions. [2025-02-05 15:36:37,550 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 2016 transitions. Word has length 142 [2025-02-05 15:36:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:37,551 INFO L471 AbstractCegarLoop]: Abstraction has 1238 states and 2016 transitions. [2025-02-05 15:36:37,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:36:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 2016 transitions. [2025-02-05 15:36:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-02-05 15:36:37,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:37,555 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:37,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 15:36:37,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:37,759 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:37,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -237364355, now seen corresponding path program 1 times [2025-02-05 15:36:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677466497] [2025-02-05 15:36:37,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:37,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:36:37,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:36:37,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:37,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677466497] [2025-02-05 15:36:37,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677466497] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674387841] [2025-02-05 15:36:37,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:37,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:37,978 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:37,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:36:38,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:36:38,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:36:38,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:38,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:38,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:36:38,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:36:38,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674387841] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:38,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:38,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-02-05 15:36:38,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716386784] [2025-02-05 15:36:38,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:38,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:36:38,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:38,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:36:38,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:36:38,242 INFO L87 Difference]: Start difference. First operand 1238 states and 2016 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:38,301 INFO L93 Difference]: Finished difference Result 3001 states and 4940 transitions. [2025-02-05 15:36:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:36:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2025-02-05 15:36:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:38,310 INFO L225 Difference]: With dead ends: 3001 [2025-02-05 15:36:38,310 INFO L226 Difference]: Without dead ends: 1809 [2025-02-05 15:36:38,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:36:38,315 INFO L435 NwaCegarLoop]: 1612 mSDtfsCounter, 840 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:38,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2502 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:36:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2025-02-05 15:36:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1236. [2025-02-05 15:36:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 959 states have (on average 1.6287799791449427) internal successors, (1562), 997 states have internal predecessors, (1562), 212 states have call successors, (212), 58 states have call predecessors, (212), 64 states have return successors, (234), 205 states have call predecessors, (234), 207 states have call successors, (234) [2025-02-05 15:36:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 2008 transitions. [2025-02-05 15:36:38,361 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 2008 transitions. Word has length 147 [2025-02-05 15:36:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:38,362 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 2008 transitions. [2025-02-05 15:36:38,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:36:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 2008 transitions. [2025-02-05 15:36:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-02-05 15:36:38,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:38,365 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:38,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 15:36:38,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:38,566 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:38,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:38,567 INFO L85 PathProgramCache]: Analyzing trace with hash -686060994, now seen corresponding path program 1 times [2025-02-05 15:36:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823675521] [2025-02-05 15:36:38,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:38,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:36:38,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:36:38,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:38,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:38,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:38,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823675521] [2025-02-05 15:36:38,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823675521] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:38,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727302249] [2025-02-05 15:36:38,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:38,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:38,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:38,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:38,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:36:38,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:36:39,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:36:39,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:39,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:39,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:36:39,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:39,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:39,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727302249] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:39,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:39,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:39,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817050150] [2025-02-05 15:36:39,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:39,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:39,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:39,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:39,150 INFO L87 Difference]: Start difference. First operand 1236 states and 2008 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:40,528 INFO L93 Difference]: Finished difference Result 3885 states and 6436 transitions. [2025-02-05 15:36:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2025-02-05 15:36:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:40,538 INFO L225 Difference]: With dead ends: 3885 [2025-02-05 15:36:40,538 INFO L226 Difference]: Without dead ends: 2694 [2025-02-05 15:36:40,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:40,542 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 1997 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:40,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 912 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-05 15:36:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2025-02-05 15:36:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2605. [2025-02-05 15:36:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 1993 states have (on average 1.6317109884596086) internal successors, (3252), 2080 states have internal predecessors, (3252), 479 states have call successors, (479), 111 states have call predecessors, (479), 132 states have return successors, (580), 473 states have call predecessors, (580), 474 states have call successors, (580) [2025-02-05 15:36:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4311 transitions. [2025-02-05 15:36:40,633 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4311 transitions. Word has length 147 [2025-02-05 15:36:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:40,633 INFO L471 AbstractCegarLoop]: Abstraction has 2605 states and 4311 transitions. [2025-02-05 15:36:40,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4311 transitions. [2025-02-05 15:36:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-05 15:36:40,636 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:40,637 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:40,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:36:40,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:40,841 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:40,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash 206752901, now seen corresponding path program 1 times [2025-02-05 15:36:40,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112662393] [2025-02-05 15:36:40,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:40,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:36:40,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:36:40,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:40,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112662393] [2025-02-05 15:36:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112662393] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303399671] [2025-02-05 15:36:41,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:41,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:41,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:36:41,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:36:41,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:36:41,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:41,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:41,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:36:41,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:41,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303399671] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:41,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467116845] [2025-02-05 15:36:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:41,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:41,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:41,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:41,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:41,360 INFO L87 Difference]: Start difference. First operand 2605 states and 4311 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:42,813 INFO L93 Difference]: Finished difference Result 8457 states and 14343 transitions. [2025-02-05 15:36:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2025-02-05 15:36:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:42,844 INFO L225 Difference]: With dead ends: 8457 [2025-02-05 15:36:42,844 INFO L226 Difference]: Without dead ends: 5897 [2025-02-05 15:36:42,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:42,857 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 2004 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:42,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 872 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 15:36:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5897 states. [2025-02-05 15:36:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5897 to 5676. [2025-02-05 15:36:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 4266 states have (on average 1.6277543366150962) internal successors, (6944), 4475 states have internal predecessors, (6944), 1131 states have call successors, (1131), 217 states have call predecessors, (1131), 278 states have return successors, (1530), 1131 states have call predecessors, (1530), 1126 states have call successors, (1530) [2025-02-05 15:36:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 9605 transitions. [2025-02-05 15:36:43,128 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 9605 transitions. Word has length 148 [2025-02-05 15:36:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:43,128 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 9605 transitions. [2025-02-05 15:36:43,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 9605 transitions. [2025-02-05 15:36:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-05 15:36:43,133 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:43,134 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:43,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 15:36:43,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:43,335 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:43,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2114176088, now seen corresponding path program 1 times [2025-02-05 15:36:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113129184] [2025-02-05 15:36:43,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:43,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:43,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:36:43,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:36:43,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:43,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:43,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113129184] [2025-02-05 15:36:43,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113129184] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350705155] [2025-02-05 15:36:43,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:43,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:43,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:43,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:36:43,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:36:43,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:36:43,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:43,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:43,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:36:43,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:43,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350705155] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:43,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809283575] [2025-02-05 15:36:43,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:43,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:43,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:43,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:43,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:43,840 INFO L87 Difference]: Start difference. First operand 5676 states and 9605 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:45,555 INFO L93 Difference]: Finished difference Result 18880 states and 33181 transitions. [2025-02-05 15:36:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:45,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2025-02-05 15:36:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:45,637 INFO L225 Difference]: With dead ends: 18880 [2025-02-05 15:36:45,637 INFO L226 Difference]: Without dead ends: 13249 [2025-02-05 15:36:45,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:45,669 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1989 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:45,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 869 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 15:36:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13249 states. [2025-02-05 15:36:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13249 to 12688. [2025-02-05 15:36:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12688 states, 9339 states have (on average 1.6191241032230432) internal successors, (15121), 9853 states have internal predecessors, (15121), 2755 states have call successors, (2755), 429 states have call predecessors, (2755), 593 states have return successors, (4247), 2779 states have call predecessors, (4247), 2750 states have call successors, (4247) [2025-02-05 15:36:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 22123 transitions. [2025-02-05 15:36:46,464 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 22123 transitions. Word has length 149 [2025-02-05 15:36:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:46,464 INFO L471 AbstractCegarLoop]: Abstraction has 12688 states and 22123 transitions. [2025-02-05 15:36:46,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 22123 transitions. [2025-02-05 15:36:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-02-05 15:36:46,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:46,469 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:46,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 15:36:46,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-05 15:36:46,670 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:46,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1114748959, now seen corresponding path program 1 times [2025-02-05 15:36:46,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:46,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018408106] [2025-02-05 15:36:46,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:46,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:36:46,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:36:46,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:46,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018408106] [2025-02-05 15:36:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018408106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056956981] [2025-02-05 15:36:46,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:46,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:46,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:46,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 15:36:47,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:36:47,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:36:47,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:47,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:47,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:36:47,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:47,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056956981] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:47,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046045381] [2025-02-05 15:36:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:47,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:47,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:47,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:47,262 INFO L87 Difference]: Start difference. First operand 12688 states and 22123 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:50,053 INFO L93 Difference]: Finished difference Result 42951 states and 79623 transitions. [2025-02-05 15:36:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2025-02-05 15:36:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:50,223 INFO L225 Difference]: With dead ends: 42951 [2025-02-05 15:36:50,224 INFO L226 Difference]: Without dead ends: 30308 [2025-02-05 15:36:50,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:50,276 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 1977 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:50,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 863 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-05 15:36:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30308 states. [2025-02-05 15:36:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30308 to 29100. [2025-02-05 15:36:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29100 states, 20932 states have (on average 1.6072998280145232) internal successors, (33644), 22215 states have internal predecessors, (33644), 6887 states have call successors, (6887), 853 states have call predecessors, (6887), 1280 states have return successors, (12384), 6995 states have call predecessors, (12384), 6882 states have call successors, (12384) [2025-02-05 15:36:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29100 states to 29100 states and 52915 transitions. [2025-02-05 15:36:52,171 INFO L78 Accepts]: Start accepts. Automaton has 29100 states and 52915 transitions. Word has length 150 [2025-02-05 15:36:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:52,172 INFO L471 AbstractCegarLoop]: Abstraction has 29100 states and 52915 transitions. [2025-02-05 15:36:52,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 29100 states and 52915 transitions. [2025-02-05 15:36:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-02-05 15:36:52,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:52,178 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-02-05 15:36:52,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 15:36:52,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-05 15:36:52,379 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:52,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 197275250, now seen corresponding path program 1 times [2025-02-05 15:36:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721799447] [2025-02-05 15:36:52,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:52,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 15:36:52,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 15:36:52,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:52,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:36:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721799447] [2025-02-05 15:36:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721799447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187792814] [2025-02-05 15:36:52,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:52,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:36:52,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 15:36:52,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 15:36:52,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 15:36:52,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:52,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:52,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:36:52,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:36:52,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187792814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598849767] [2025-02-05 15:36:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:52,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:52,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:52,951 INFO L87 Difference]: Start difference. First operand 29100 states and 52915 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:36:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:58,316 INFO L93 Difference]: Finished difference Result 99735 states and 200552 transitions. [2025-02-05 15:36:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:58,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2025-02-05 15:36:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:58,908 INFO L225 Difference]: With dead ends: 99735 [2025-02-05 15:36:58,908 INFO L226 Difference]: Without dead ends: 70670 [2025-02-05 15:36:59,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:59,077 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 1952 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:59,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 959 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 15:36:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70670 states. [2025-02-05 15:37:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70670 to 68500. [2025-02-05 15:37:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68500 states, 48107 states have (on average 1.5935102999563473) internal successors, (76659), 51347 states have internal predecessors, (76659), 17593 states have call successors, (17593), 1698 states have call predecessors, (17593), 2799 states have return successors, (37934), 17976 states have call predecessors, (37934), 17588 states have call successors, (37934) [2025-02-05 15:37:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68500 states to 68500 states and 132186 transitions. [2025-02-05 15:37:04,053 INFO L78 Accepts]: Start accepts. Automaton has 68500 states and 132186 transitions. Word has length 151 [2025-02-05 15:37:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:04,054 INFO L471 AbstractCegarLoop]: Abstraction has 68500 states and 132186 transitions. [2025-02-05 15:37:04,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:37:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68500 states and 132186 transitions. [2025-02-05 15:37:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-02-05 15:37:04,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:04,075 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:04,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 15:37:04,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:04,281 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:04,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1907254011, now seen corresponding path program 1 times [2025-02-05 15:37:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895272438] [2025-02-05 15:37:04,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:04,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-02-05 15:37:04,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-02-05 15:37:04,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:04,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-02-05 15:37:04,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895272438] [2025-02-05 15:37:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895272438] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:37:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138956915] [2025-02-05 15:37:04,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:04,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:04,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:04,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:37:04,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 15:37:04,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-02-05 15:37:04,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-02-05 15:37:04,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:04,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:04,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:37:04,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:37:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 15:37:04,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:37:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138956915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:37:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:37:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267681005] [2025-02-05 15:37:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:04,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:04,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:04,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:37:04,970 INFO L87 Difference]: Start difference. First operand 68500 states and 132186 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:37:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:09,819 INFO L93 Difference]: Finished difference Result 139834 states and 280688 transitions. [2025-02-05 15:37:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:37:09,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 206 [2025-02-05 15:37:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:10,302 INFO L225 Difference]: With dead ends: 139834 [2025-02-05 15:37:10,302 INFO L226 Difference]: Without dead ends: 71380 [2025-02-05 15:37:10,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:37:10,702 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 144 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:10,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2494 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:37:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71380 states.