./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_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_spec9_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 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:39:01,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:39:01,064 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:39:01,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:39:01,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:39:01,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:39:01,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:39:01,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:39:01,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:39:01,083 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:39:01,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:39:01,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:39:01,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:39:01,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:39:01,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:39:01,084 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:39:01,085 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:39:01,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:39:01,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:39:01,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:39:01,086 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 -> 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 [2025-02-05 15:39:01,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:39:01,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:39:01,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:39:01,435 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:39:01,435 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:39:01,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2025-02-05 15:39:02,738 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3de00c7e/69ea3ee9323d4c19b9c1f212da603a0c/FLAG22a2962af [2025-02-05 15:39:03,078 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:39:03,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2025-02-05 15:39:03,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3de00c7e/69ea3ee9323d4c19b9c1f212da603a0c/FLAG22a2962af [2025-02-05 15:39:03,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3de00c7e/69ea3ee9323d4c19b9c1f212da603a0c [2025-02-05 15:39:03,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:39:03,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:39:03,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:39:03,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:39:03,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:39:03,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3febd2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03, skipping insertion in model container [2025-02-05 15:39:03,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,172 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:39:03,318 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_spec9_product31.cil.c[5910,5923] [2025-02-05 15:39:03,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:39:03,473 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:39:03,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [183] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [284] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [293] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [960] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1122] [2025-02-05 15:39:03,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2737] [2025-02-05 15:39:03,481 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2775] [2025-02-05 15:39:03,481 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3141] [2025-02-05 15:39:03,488 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_spec9_product31.cil.c[5910,5923] [2025-02-05 15:39:03,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:39:03,574 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:39:03,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03 WrapperNode [2025-02-05 15:39:03,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:39:03,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:39:03,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:39:03,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:39:03,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,624 INFO L138 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 921 [2025-02-05 15:39:03,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:39:03,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:39:03,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:39:03,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:39:03,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,671 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 15:39:03,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:39:03,709 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:39:03,709 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:39:03,709 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:39:03,710 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (1/1) ... [2025-02-05 15:39:03,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:39:03,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:03,740 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 15:39:03,749 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 15:39:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-02-05 15:39:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-02-05 15:39:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:39:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:39:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:39:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:39:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:39:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:39:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:39:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:39:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:39:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:39:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:39:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:39:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:39:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:39:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:39:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:39:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:39:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:39:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:39:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:39:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:39:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:39:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:39:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:39:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:39:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:39:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2025-02-05 15:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:39:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:39:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:39:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:39:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:39:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:39:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:39:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:39:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:39:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:39:03,942 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:39:03,948 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:39:04,010 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2069-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~18#1; [2025-02-05 15:39:04,011 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2097: #res#1 := ~retValue_acc~19#1; [2025-02-05 15:39:04,032 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-02-05 15:39:04,052 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L88: #res := ~retValue_acc~0; [2025-02-05 15:39:04,056 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1196: #res := ~retValue_acc~6; [2025-02-05 15:39:04,068 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1373: #res := ~retValue_acc~7; [2025-02-05 15:39:04,109 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2725: #res := ~retValue_acc~23; [2025-02-05 15:39:04,255 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2013-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~17#1; [2025-02-05 15:39:04,255 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1950-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~15#1; [2025-02-05 15:39:04,255 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1979: #res#1 := ~retValue_acc~16#1; [2025-02-05 15:39:04,324 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2142: #res := ~retValue_acc~21; [2025-02-05 15:39:04,337 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-02-05 15:39:04,353 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1465: #res := ~retValue_acc~11; [2025-02-05 15:39:04,448 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1910: #res := ~retValue_acc~14; [2025-02-05 15:39:04,456 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1416: #res := ~retValue_acc~9; [2025-02-05 15:39:04,572 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1382-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~8#1; [2025-02-05 15:39:04,572 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2128-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~20#1; [2025-02-05 15:39:04,635 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1545-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~12#1; [2025-02-05 15:39:04,635 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1558-1: isIdle_#res#1 := isIdle_~retValue_acc~13#1; [2025-02-05 15:39:04,687 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L646: #res := ~retValue_acc~4; [2025-02-05 15:39:04,750 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3488-1: main_#res#1 := main_~retValue_acc~31#1; [2025-02-05 15:39:04,751 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2772-1: valid_product_#res#1 := valid_product_~retValue_acc~26#1; [2025-02-05 15:39:04,758 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L410: #res := ~retValue_acc~3; [2025-02-05 15:39:04,766 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L957: #res := ~retValue_acc~5; [2025-02-05 15:39:04,889 INFO L? ?]: Removed 477 outVars from TransFormulas that were not future-live. [2025-02-05 15:39:04,889 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:39:04,915 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:39:04,915 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:39:04,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:39:04 BoogieIcfgContainer [2025-02-05 15:39:04,916 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:39:04,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:39:04,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:39:04,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:39:04,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:39:03" (1/3) ... [2025-02-05 15:39:04,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6710cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:39:04, skipping insertion in model container [2025-02-05 15:39:04,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:39:03" (2/3) ... [2025-02-05 15:39:04,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6710cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:39:04, skipping insertion in model container [2025-02-05 15:39:04,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:39:04" (3/3) ... [2025-02-05 15:39:04,926 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product31.cil.c [2025-02-05 15:39:04,936 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:39:04,937 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec9_product31.cil.c that has 27 procedures, 587 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:39:05,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:39:05,011 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;@317cd1a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:39:05,012 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:39:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 587 states, 459 states have (on average 1.681917211328976) internal successors, (772), 481 states have internal predecessors, (772), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 15:39:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:39:05,042 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:05,043 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 15:39:05,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:05,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 124995307, now seen corresponding path program 1 times [2025-02-05 15:39:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907669110] [2025-02-05 15:39:05,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:05,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:39:05,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:39:05,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:05,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:05,548 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 15:39:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:05,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907669110] [2025-02-05 15:39:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907669110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713272007] [2025-02-05 15:39:05,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:05,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:05,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:05,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:05,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:05,567 INFO L87 Difference]: Start difference. First operand has 587 states, 459 states have (on average 1.681917211328976) internal successors, (772), 481 states have internal predecessors, (772), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) 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, (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 15:39:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:05,692 INFO L93 Difference]: Finished difference Result 1154 states and 1914 transitions. [2025-02-05 15:39:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:05,695 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, (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 124 [2025-02-05 15:39:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:05,711 INFO L225 Difference]: With dead ends: 1154 [2025-02-05 15:39:05,711 INFO L226 Difference]: Without dead ends: 578 [2025-02-05 15:39:05,717 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 15:39:05,718 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 5 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2846 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 15:39:05,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2846 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-05 15:39:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-02-05 15:39:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6754966887417218) internal successors, (759), 472 states have internal predecessors, (759), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 952 transitions. [2025-02-05 15:39:05,792 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 952 transitions. Word has length 124 [2025-02-05 15:39:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:05,792 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 952 transitions. [2025-02-05 15:39:05,792 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, (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 15:39:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 952 transitions. [2025-02-05 15:39:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:39:05,801 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:05,801 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 15:39:05,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:39:05,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:05,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 680722968, now seen corresponding path program 1 times [2025-02-05 15:39:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365418214] [2025-02-05 15:39:05,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:05,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:39:05,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:39:05,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:05,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:06,034 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 15:39:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365418214] [2025-02-05 15:39:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365418214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124251928] [2025-02-05 15:39:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:06,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:06,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:06,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:06,040 INFO L87 Difference]: Start difference. First operand 578 states and 952 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, (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 15:39:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:06,151 INFO L93 Difference]: Finished difference Result 1138 states and 1881 transitions. [2025-02-05 15:39:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:06,151 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, (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 125 [2025-02-05 15:39:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:06,158 INFO L225 Difference]: With dead ends: 1138 [2025-02-05 15:39:06,158 INFO L226 Difference]: Without dead ends: 578 [2025-02-05 15:39:06,162 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 15:39:06,163 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 4 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:06,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2819 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-05 15:39:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-02-05 15:39:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6732891832229582) internal successors, (758), 472 states have internal predecessors, (758), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 951 transitions. [2025-02-05 15:39:06,202 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 951 transitions. Word has length 125 [2025-02-05 15:39:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:06,203 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 951 transitions. [2025-02-05 15:39:06,203 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, (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 15:39:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 951 transitions. [2025-02-05 15:39:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-05 15:39:06,210 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:06,210 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 15:39:06,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:39:06,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:06,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash -763055512, now seen corresponding path program 1 times [2025-02-05 15:39:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:06,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231037765] [2025-02-05 15:39:06,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:06,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:06,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:39:06,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:39:06,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:06,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:06,396 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 15:39:06,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:06,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231037765] [2025-02-05 15:39:06,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231037765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:06,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178325089] [2025-02-05 15:39:06,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:06,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:06,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:06,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:06,401 INFO L87 Difference]: Start difference. First operand 578 states and 951 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, (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 15:39:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:06,451 INFO L93 Difference]: Finished difference Result 1138 states and 1880 transitions. [2025-02-05 15:39:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:06,452 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, (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 126 [2025-02-05 15:39:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:06,456 INFO L225 Difference]: With dead ends: 1138 [2025-02-05 15:39:06,456 INFO L226 Difference]: Without dead ends: 578 [2025-02-05 15:39:06,459 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 15:39:06,459 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 3 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2819 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 15:39:06,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2819 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-05 15:39:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-02-05 15:39:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6710816777041944) internal successors, (757), 472 states have internal predecessors, (757), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 950 transitions. [2025-02-05 15:39:06,481 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 950 transitions. Word has length 126 [2025-02-05 15:39:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:06,481 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 950 transitions. [2025-02-05 15:39:06,482 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, (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 15:39:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 950 transitions. [2025-02-05 15:39:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:39:06,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:06,486 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 15:39:06,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:39:06,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:06,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 232985077, now seen corresponding path program 1 times [2025-02-05 15:39:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549998399] [2025-02-05 15:39:06,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:06,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:39:06,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:39:06,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:06,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:06,637 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 15:39:06,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549998399] [2025-02-05 15:39:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549998399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:06,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695946718] [2025-02-05 15:39:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:06,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:06,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:06,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:06,639 INFO L87 Difference]: Start difference. First operand 578 states and 950 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, (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 15:39:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:06,678 INFO L93 Difference]: Finished difference Result 1138 states and 1879 transitions. [2025-02-05 15:39:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:06,678 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, (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 127 [2025-02-05 15:39:06,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:06,684 INFO L225 Difference]: With dead ends: 1138 [2025-02-05 15:39:06,684 INFO L226 Difference]: Without dead ends: 578 [2025-02-05 15:39:06,686 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 15:39:06,687 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 2 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2819 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 15:39:06,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2819 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-05 15:39:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-02-05 15:39:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6688741721854305) internal successors, (756), 472 states have internal predecessors, (756), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 949 transitions. [2025-02-05 15:39:06,724 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 949 transitions. Word has length 127 [2025-02-05 15:39:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:06,728 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 949 transitions. [2025-02-05 15:39:06,728 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, (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 15:39:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 949 transitions. [2025-02-05 15:39:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 15:39:06,734 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:06,735 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 15:39:06,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:39:06,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:06,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash -445994523, now seen corresponding path program 1 times [2025-02-05 15:39:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740967482] [2025-02-05 15:39:06,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:06,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:39:06,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:39:06,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:06,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:06,896 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 15:39:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740967482] [2025-02-05 15:39:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740967482] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928733452] [2025-02-05 15:39:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:06,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:06,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:06,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:06,899 INFO L87 Difference]: Start difference. First operand 578 states and 949 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, (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 15:39:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:06,944 INFO L93 Difference]: Finished difference Result 1138 states and 1878 transitions. [2025-02-05 15:39:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:06,945 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, (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 128 [2025-02-05 15:39:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:06,950 INFO L225 Difference]: With dead ends: 1138 [2025-02-05 15:39:06,950 INFO L226 Difference]: Without dead ends: 578 [2025-02-05 15:39:06,952 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 15:39:06,954 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 1 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2819 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 15:39:06,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2819 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-05 15:39:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-02-05 15:39:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6666666666666667) internal successors, (755), 472 states have internal predecessors, (755), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 948 transitions. [2025-02-05 15:39:06,981 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 948 transitions. Word has length 128 [2025-02-05 15:39:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:06,981 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 948 transitions. [2025-02-05 15:39:06,981 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, (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 15:39:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 948 transitions. [2025-02-05 15:39:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 15:39:06,985 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:06,985 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 15:39:06,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:39:06,985 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:06,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1510992430, now seen corresponding path program 1 times [2025-02-05 15:39:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162040414] [2025-02-05 15:39:06,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:07,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:39:07,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:39:07,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:07,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:07,190 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 15:39:07,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:07,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162040414] [2025-02-05 15:39:07,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162040414] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:07,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:07,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:39:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479487460] [2025-02-05 15:39:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:07,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:39:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:07,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:39:07,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:07,191 INFO L87 Difference]: Start difference. First operand 578 states and 948 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:39:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:07,268 INFO L93 Difference]: Finished difference Result 1104 states and 1810 transitions. [2025-02-05 15:39:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:39:07,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-02-05 15:39:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:07,272 INFO L225 Difference]: With dead ends: 1104 [2025-02-05 15:39:07,272 INFO L226 Difference]: Without dead ends: 593 [2025-02-05 15:39:07,274 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 15:39:07,275 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 91 mSDsluCounter, 4609 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5547 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:07,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5547 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-02-05 15:39:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2025-02-05 15:39:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 484 states have internal predecessors, (770), 100 states have call successors, (100), 26 states have call predecessors, (100), 27 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2025-02-05 15:39:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 967 transitions. [2025-02-05 15:39:07,299 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 967 transitions. Word has length 129 [2025-02-05 15:39:07,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:07,300 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 967 transitions. [2025-02-05 15:39:07,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:39:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 967 transitions. [2025-02-05 15:39:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 15:39:07,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:07,304 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 15:39:07,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:39:07,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:07,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1275314255, now seen corresponding path program 1 times [2025-02-05 15:39:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:07,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600321188] [2025-02-05 15:39:07,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:07,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:39:07,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:39:07,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:07,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:07,400 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 15:39:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600321188] [2025-02-05 15:39:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600321188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321546821] [2025-02-05 15:39:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:07,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:07,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:07,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:07,401 INFO L87 Difference]: Start difference. First operand 591 states and 967 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, (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 15:39:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:07,439 INFO L93 Difference]: Finished difference Result 1156 states and 1904 transitions. [2025-02-05 15:39:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:07,440 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, (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 129 [2025-02-05 15:39:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:07,444 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:39:07,444 INFO L226 Difference]: Without dead ends: 572 [2025-02-05 15:39:07,446 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 15:39:07,447 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 0 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2821 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 15:39:07,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2821 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-02-05 15:39:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2025-02-05 15:39:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.657718120805369) internal successors, (741), 466 states have internal predecessors, (741), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 934 transitions. [2025-02-05 15:39:07,466 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 934 transitions. Word has length 129 [2025-02-05 15:39:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:07,466 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 934 transitions. [2025-02-05 15:39:07,466 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, (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 15:39:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 934 transitions. [2025-02-05 15:39:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 15:39:07,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:07,470 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 15:39:07,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:39:07,470 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:07,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1561800351, now seen corresponding path program 1 times [2025-02-05 15:39:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:07,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809451870] [2025-02-05 15:39:07,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:07,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 15:39:07,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 15:39:07,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:07,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:07,630 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 15:39:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809451870] [2025-02-05 15:39:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809451870] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:07,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:07,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:39:07,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517394846] [2025-02-05 15:39:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:07,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:39:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:07,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:39:07,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:39:07,632 INFO L87 Difference]: Start difference. First operand 572 states and 934 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:07,851 INFO L93 Difference]: Finished difference Result 1101 states and 1802 transitions. [2025-02-05 15:39:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:07,851 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2025-02-05 15:39:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:07,857 INFO L225 Difference]: With dead ends: 1101 [2025-02-05 15:39:07,858 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:39:07,860 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 15:39:07,861 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 55 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:07,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4426 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:39:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:39:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2025-02-05 15:39:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.6487695749440716) internal successors, (737), 466 states have internal predecessors, (737), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 930 transitions. [2025-02-05 15:39:07,887 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 930 transitions. Word has length 130 [2025-02-05 15:39:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:07,888 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 930 transitions. [2025-02-05 15:39:07,888 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 930 transitions. [2025-02-05 15:39:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-02-05 15:39:07,892 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:07,892 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 15:39:07,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:39:07,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:07,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2046320055, now seen corresponding path program 1 times [2025-02-05 15:39:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:07,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785461575] [2025-02-05 15:39:07,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:07,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-02-05 15:39:07,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-02-05 15:39:07,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:07,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:08,033 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 15:39:08,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785461575] [2025-02-05 15:39:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785461575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:08,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:39:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229710006] [2025-02-05 15:39:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:39:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:08,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:39:08,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:39:08,035 INFO L87 Difference]: Start difference. First operand 572 states and 930 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:08,174 INFO L93 Difference]: Finished difference Result 1101 states and 1798 transitions. [2025-02-05 15:39:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:08,175 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2025-02-05 15:39:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:08,179 INFO L225 Difference]: With dead ends: 1101 [2025-02-05 15:39:08,180 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:39:08,182 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 15:39:08,182 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 54 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4426 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 15:39:08,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4426 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:39:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2025-02-05 15:39:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.639821029082774) internal successors, (733), 466 states have internal predecessors, (733), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 926 transitions. [2025-02-05 15:39:08,201 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 926 transitions. Word has length 131 [2025-02-05 15:39:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:08,201 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 926 transitions. [2025-02-05 15:39:08,201 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 926 transitions. [2025-02-05 15:39:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-05 15:39:08,204 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:08,204 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 15:39:08,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:39:08,204 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:08,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash 795940644, now seen corresponding path program 1 times [2025-02-05 15:39:08,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:08,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402214681] [2025-02-05 15:39:08,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:08,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-05 15:39:08,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-05 15:39:08,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:08,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:08,364 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 15:39:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402214681] [2025-02-05 15:39:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402214681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:08,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:39:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102350772] [2025-02-05 15:39:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:08,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:39:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:08,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:39:08,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:39:08,366 INFO L87 Difference]: Start difference. First operand 572 states and 926 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:08,507 INFO L93 Difference]: Finished difference Result 1101 states and 1794 transitions. [2025-02-05 15:39:08,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:08,507 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2025-02-05 15:39:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:08,513 INFO L225 Difference]: With dead ends: 1101 [2025-02-05 15:39:08,513 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:39:08,516 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 15:39:08,516 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 53 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4408 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 15:39:08,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4408 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:39:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2025-02-05 15:39:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.6308724832214765) internal successors, (729), 466 states have internal predecessors, (729), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2025-02-05 15:39:08,535 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 132 [2025-02-05 15:39:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:08,535 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2025-02-05 15:39:08,535 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2025-02-05 15:39:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-05 15:39:08,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:08,539 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 15:39:08,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 15:39:08,539 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:08,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1476519085, now seen corresponding path program 1 times [2025-02-05 15:39:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566456815] [2025-02-05 15:39:08,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:08,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-05 15:39:08,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-05 15:39:08,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:08,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:08,679 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 15:39:08,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:08,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566456815] [2025-02-05 15:39:08,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566456815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:08,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:08,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:39:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450903587] [2025-02-05 15:39:08,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:08,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:39:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:08,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:39:08,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:08,680 INFO L87 Difference]: Start difference. First operand 572 states and 922 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:39:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:08,740 INFO L93 Difference]: Finished difference Result 1092 states and 1776 transitions. [2025-02-05 15:39:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:39:08,741 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 132 [2025-02-05 15:39:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:08,747 INFO L225 Difference]: With dead ends: 1092 [2025-02-05 15:39:08,747 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 15:39:08,749 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 15:39:08,750 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 84 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5393 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 15:39:08,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5393 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 15:39:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-02-05 15:39:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6314553990610328) internal successors, (695), 445 states have internal predecessors, (695), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 888 transitions. [2025-02-05 15:39:08,765 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 888 transitions. Word has length 132 [2025-02-05 15:39:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:08,765 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 888 transitions. [2025-02-05 15:39:08,765 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:39:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 888 transitions. [2025-02-05 15:39:08,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-02-05 15:39:08,769 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:08,769 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 15:39:08,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 15:39:08,769 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:08,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -605788564, now seen corresponding path program 1 times [2025-02-05 15:39:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297964721] [2025-02-05 15:39:08,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:08,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:39:08,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:39:08,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:08,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:08,928 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 15:39:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297964721] [2025-02-05 15:39:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297964721] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:08,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:39:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891332989] [2025-02-05 15:39:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:08,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:39:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:08,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:39:08,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:39:08,931 INFO L87 Difference]: Start difference. First operand 551 states and 888 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:08,989 INFO L93 Difference]: Finished difference Result 1071 states and 1742 transitions. [2025-02-05 15:39:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:08,990 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2025-02-05 15:39:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:08,993 INFO L225 Difference]: With dead ends: 1071 [2025-02-05 15:39:08,994 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 15:39:08,995 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 15:39:08,996 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 17 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4346 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 15:39:08,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4346 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 15:39:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-02-05 15:39:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6291079812206573) internal successors, (694), 445 states have internal predecessors, (694), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 887 transitions. [2025-02-05 15:39:09,012 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 887 transitions. Word has length 133 [2025-02-05 15:39:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:09,012 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 887 transitions. [2025-02-05 15:39:09,013 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 887 transitions. [2025-02-05 15:39:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-02-05 15:39:09,015 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:09,016 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 15:39:09,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 15:39:09,016 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:09,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -427218713, now seen corresponding path program 1 times [2025-02-05 15:39:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:09,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133898118] [2025-02-05 15:39:09,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:09,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 15:39:09,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 15:39:09,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:09,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:09,160 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 15:39:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133898118] [2025-02-05 15:39:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133898118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:09,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:39:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698321397] [2025-02-05 15:39:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:09,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:39:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:09,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:39:09,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:39:09,161 INFO L87 Difference]: Start difference. First operand 551 states and 887 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:09,248 INFO L93 Difference]: Finished difference Result 1071 states and 1741 transitions. [2025-02-05 15:39:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:09,249 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2025-02-05 15:39:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:09,253 INFO L225 Difference]: With dead ends: 1071 [2025-02-05 15:39:09,253 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 15:39:09,255 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 15:39:09,255 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 16 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:09,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4346 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 15:39:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-02-05 15:39:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6267605633802817) internal successors, (693), 445 states have internal predecessors, (693), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 886 transitions. [2025-02-05 15:39:09,272 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 886 transitions. Word has length 134 [2025-02-05 15:39:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:09,272 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 886 transitions. [2025-02-05 15:39:09,272 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, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:39:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 886 transitions. [2025-02-05 15:39:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 15:39:09,275 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:09,276 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, 1] [2025-02-05 15:39:09,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 15:39:09,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:09,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1495981711, now seen corresponding path program 1 times [2025-02-05 15:39:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323180645] [2025-02-05 15:39:09,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:09,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 15:39:09,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 15:39:09,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:09,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:09,366 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 15:39:09,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:09,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323180645] [2025-02-05 15:39:09,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323180645] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:09,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:39:09,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:39:09,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786470275] [2025-02-05 15:39:09,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:09,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:09,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:09,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:39:09,368 INFO L87 Difference]: Start difference. First operand 551 states and 886 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 15:39:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:09,403 INFO L93 Difference]: Finished difference Result 1065 states and 1729 transitions. [2025-02-05 15:39:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:39:09,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 135 [2025-02-05 15:39:09,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:09,409 INFO L225 Difference]: With dead ends: 1065 [2025-02-05 15:39:09,409 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 15:39:09,411 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 15:39:09,412 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 5 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:09,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2612 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 15:39:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-02-05 15:39:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.624413145539906) internal successors, (692), 445 states have internal predecessors, (692), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:39:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 885 transitions. [2025-02-05 15:39:09,431 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 885 transitions. Word has length 135 [2025-02-05 15:39:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:09,433 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 885 transitions. [2025-02-05 15:39:09,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 15:39:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 885 transitions. [2025-02-05 15:39:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:39:09,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:09,438 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, 1, 1] [2025-02-05 15:39:09,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 15:39:09,438 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:09,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -856742182, now seen corresponding path program 1 times [2025-02-05 15:39:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296441001] [2025-02-05 15:39:09,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:09,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:39:09,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:39:09,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:09,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:09,587 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 15:39:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296441001] [2025-02-05 15:39:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296441001] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172502659] [2025-02-05 15:39:09,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:09,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:09,592 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 15:39:09,599 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 15:39:09,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:39:09,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:39:09,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:09,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:09,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:09,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:39:09,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172502659] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:09,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:09,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:39:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877144450] [2025-02-05 15:39:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:09,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:39:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:09,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:39:09,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:09,943 INFO L87 Difference]: Start difference. First operand 551 states and 885 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (17), 3 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 15:39:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:09,987 INFO L93 Difference]: Finished difference Result 1554 states and 2552 transitions. [2025-02-05 15:39:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:39:09,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (17), 3 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 136 [2025-02-05 15:39:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:09,995 INFO L225 Difference]: With dead ends: 1554 [2025-02-05 15:39:09,996 INFO L226 Difference]: Without dead ends: 1048 [2025-02-05 15:39:09,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:09,998 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 853 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:09,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1828 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2025-02-05 15:39:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2025-02-05 15:39:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 810 states have (on average 1.6444444444444444) internal successors, (1332), 843 states have internal predecessors, (1332), 188 states have call successors, (188), 47 states have call predecessors, (188), 47 states have return successors, (193), 181 states have call predecessors, (193), 183 states have call successors, (193) [2025-02-05 15:39:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1713 transitions. [2025-02-05 15:39:10,035 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1713 transitions. Word has length 136 [2025-02-05 15:39:10,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:10,035 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1713 transitions. [2025-02-05 15:39:10,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (17), 3 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 15:39:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1713 transitions. [2025-02-05 15:39:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-05 15:39:10,039 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:10,039 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, 1, 1, 1] [2025-02-05 15:39:10,047 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 15:39:10,240 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 15:39:10,240 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:10,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash -789388190, now seen corresponding path program 1 times [2025-02-05 15:39:10,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920194120] [2025-02-05 15:39:10,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:10,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:10,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 15:39:10,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 15:39:10,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:10,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:10,361 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 15:39:10,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920194120] [2025-02-05 15:39:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920194120] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663493318] [2025-02-05 15:39:10,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:10,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:10,364 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 15:39:10,366 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 15:39:10,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 15:39:10,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 15:39:10,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:10,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:10,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:10,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:39:10,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663493318] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:39:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803372493] [2025-02-05 15:39:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:10,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:39:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:10,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:39:10,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:10,724 INFO L87 Difference]: Start difference. First operand 1046 states and 1713 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 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 15:39:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:10,796 INFO L93 Difference]: Finished difference Result 3041 states and 5054 transitions. [2025-02-05 15:39:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:39:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 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 137 [2025-02-05 15:39:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:10,812 INFO L225 Difference]: With dead ends: 3041 [2025-02-05 15:39:10,813 INFO L226 Difference]: Without dead ends: 2040 [2025-02-05 15:39:10,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:10,819 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 852 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:10,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1784 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2025-02-05 15:39:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2037. [2025-02-05 15:39:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1579 states have (on average 1.654844838505383) internal successors, (2613), 1640 states have internal predecessors, (2613), 366 states have call successors, (366), 89 states have call predecessors, (366), 91 states have return successors, (403), 359 states have call predecessors, (403), 361 states have call successors, (403) [2025-02-05 15:39:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3382 transitions. [2025-02-05 15:39:10,899 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3382 transitions. Word has length 137 [2025-02-05 15:39:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:10,900 INFO L471 AbstractCegarLoop]: Abstraction has 2037 states and 3382 transitions. [2025-02-05 15:39:10,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 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 15:39:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3382 transitions. [2025-02-05 15:39:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 15:39:10,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:10,905 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, 1, 1, 1, 1] [2025-02-05 15:39:10,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:39:11,105 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 15:39:11,106 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:11,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:11,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1298581780, now seen corresponding path program 1 times [2025-02-05 15:39:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375012294] [2025-02-05 15:39:11,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:11,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:39:11,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:39:11,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:11,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:11,222 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 15:39:11,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375012294] [2025-02-05 15:39:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375012294] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899432890] [2025-02-05 15:39:11,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:11,225 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 15:39:11,234 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 15:39:11,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:39:11,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:39:11,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:11,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:11,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:11,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:39:11,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899432890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:11,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:39:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486676130] [2025-02-05 15:39:11,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:11,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:39:11,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:11,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:39:11,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:11,563 INFO L87 Difference]: Start difference. First operand 2037 states and 3382 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (17), 3 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 15:39:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:11,734 INFO L93 Difference]: Finished difference Result 6016 states and 10112 transitions. [2025-02-05 15:39:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:39:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (17), 3 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 138 [2025-02-05 15:39:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:11,768 INFO L225 Difference]: With dead ends: 6016 [2025-02-05 15:39:11,768 INFO L226 Difference]: Without dead ends: 4024 [2025-02-05 15:39:11,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:11,784 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 850 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:11,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1777 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2025-02-05 15:39:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4020. [2025-02-05 15:39:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 3118 states have (on average 1.6597177677998718) internal successors, (5175), 3235 states have internal predecessors, (5175), 722 states have call successors, (722), 173 states have call predecessors, (722), 179 states have return successors, (859), 715 states have call predecessors, (859), 717 states have call successors, (859) [2025-02-05 15:39:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 6756 transitions. [2025-02-05 15:39:12,008 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 6756 transitions. Word has length 138 [2025-02-05 15:39:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:12,010 INFO L471 AbstractCegarLoop]: Abstraction has 4020 states and 6756 transitions. [2025-02-05 15:39:12,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (17), 3 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 15:39:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 6756 transitions. [2025-02-05 15:39:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-02-05 15:39:12,020 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:12,021 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, 1, 1, 1, 1, 1] [2025-02-05 15:39:12,029 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 15:39:12,221 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 15:39:12,222 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:12,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1601137628, now seen corresponding path program 1 times [2025-02-05 15:39:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183496719] [2025-02-05 15:39:12,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:12,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:12,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-02-05 15:39:12,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-02-05 15:39:12,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:12,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:12,353 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 15:39:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183496719] [2025-02-05 15:39:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183496719] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640702536] [2025-02-05 15:39:12,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:12,359 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 15:39:12,360 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 15:39:12,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-02-05 15:39:12,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-02-05 15:39:12,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:12,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:12,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:12,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:39:12,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640702536] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:12,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:12,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:39:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641808722] [2025-02-05 15:39:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:12,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:39:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:12,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:39:12,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:12,684 INFO L87 Difference]: Start difference. First operand 4020 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 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 15:39:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:12,966 INFO L93 Difference]: Finished difference Result 11967 states and 20405 transitions. [2025-02-05 15:39:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:39:12,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 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 139 [2025-02-05 15:39:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:13,026 INFO L225 Difference]: With dead ends: 11967 [2025-02-05 15:39:13,026 INFO L226 Difference]: Without dead ends: 7992 [2025-02-05 15:39:13,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:13,055 INFO L435 NwaCegarLoop]: 985 mSDtfsCounter, 848 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:13,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1816 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2025-02-05 15:39:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7987. [2025-02-05 15:39:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 6197 states have (on average 1.6616104566725836) internal successors, (10297), 6426 states have internal predecessors, (10297), 1434 states have call successors, (1434), 341 states have call predecessors, (1434), 355 states have return successors, (1891), 1427 states have call predecessors, (1891), 1429 states have call successors, (1891) [2025-02-05 15:39:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 13622 transitions. [2025-02-05 15:39:13,358 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 13622 transitions. Word has length 139 [2025-02-05 15:39:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:13,359 INFO L471 AbstractCegarLoop]: Abstraction has 7987 states and 13622 transitions. [2025-02-05 15:39:13,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 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 15:39:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 13622 transitions. [2025-02-05 15:39:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-05 15:39:13,365 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:13,365 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, 1, 1, 1, 1, 1, 1] [2025-02-05 15:39:13,374 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 15:39:13,565 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 15:39:13,566 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:13,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1904536754, now seen corresponding path program 1 times [2025-02-05 15:39:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480644377] [2025-02-05 15:39:13,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:13,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:39:13,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:39:13,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:13,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:13,730 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 15:39:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480644377] [2025-02-05 15:39:13,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480644377] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494444904] [2025-02-05 15:39:13,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:13,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:13,733 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 15:39:13,736 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 15:39:13,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:39:13,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:39:13,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:13,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:13,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:13,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:39:14,009 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494444904] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:39:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654998761] [2025-02-05 15:39:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:14,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:39:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:14,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:39:14,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:14,011 INFO L87 Difference]: Start difference. First operand 7987 states and 13622 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 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 15:39:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:14,396 INFO L93 Difference]: Finished difference Result 23870 states and 41629 transitions. [2025-02-05 15:39:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:39:14,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 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 140 [2025-02-05 15:39:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:14,480 INFO L225 Difference]: With dead ends: 23870 [2025-02-05 15:39:14,480 INFO L226 Difference]: Without dead ends: 15920 [2025-02-05 15:39:14,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:39:14,518 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 848 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:14,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1833 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:39:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15920 states. [2025-02-05 15:39:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15920 to 15914. [2025-02-05 15:39:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15914 states, 12349 states have (on average 1.6619159446108998) internal successors, (20523), 12802 states have internal predecessors, (20523), 2858 states have call successors, (2858), 677 states have call predecessors, (2858), 706 states have return successors, (4386), 2850 states have call predecessors, (4386), 2853 states have call successors, (4386) [2025-02-05 15:39:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15914 states to 15914 states and 27767 transitions. [2025-02-05 15:39:15,245 INFO L78 Accepts]: Start accepts. Automaton has 15914 states and 27767 transitions. Word has length 140 [2025-02-05 15:39:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:15,245 INFO L471 AbstractCegarLoop]: Abstraction has 15914 states and 27767 transitions. [2025-02-05 15:39:15,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (17), 3 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 15:39:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 15914 states and 27767 transitions. [2025-02-05 15:39:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-02-05 15:39:15,268 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:15,269 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:15,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 15:39:15,469 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 15:39:15,470 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:15,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1533536532, now seen corresponding path program 1 times [2025-02-05 15:39:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073889534] [2025-02-05 15:39:15,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:15,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-02-05 15:39:15,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-02-05 15:39:15,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:15,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-02-05 15:39:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073889534] [2025-02-05 15:39:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073889534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321234001] [2025-02-05 15:39:15,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:15,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:15,622 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 15:39:15,626 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 15:39:15,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-02-05 15:39:15,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-02-05 15:39:15,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:15,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:15,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:39:15,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 15:39:16,041 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321234001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:39:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184403054] [2025-02-05 15:39:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:16,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:39:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:16,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:39:16,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:39:16,043 INFO L87 Difference]: Start difference. First operand 15914 states and 27767 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:17,045 INFO L93 Difference]: Finished difference Result 32039 states and 57564 transitions. [2025-02-05 15:39:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 206 [2025-02-05 15:39:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:17,170 INFO L225 Difference]: With dead ends: 32039 [2025-02-05 15:39:17,170 INFO L226 Difference]: Without dead ends: 16170 [2025-02-05 15:39:17,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 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 15:39:17,252 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 845 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:17,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2221 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:39:17,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16170 states. [2025-02-05 15:39:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16170 to 16170. [2025-02-05 15:39:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16170 states, 12573 states have (on average 1.6628489620615605) internal successors, (20907), 13026 states have internal predecessors, (20907), 2858 states have call successors, (2858), 709 states have call predecessors, (2858), 738 states have return successors, (4418), 2850 states have call predecessors, (4418), 2853 states have call successors, (4418) [2025-02-05 15:39:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16170 states to 16170 states and 28183 transitions. [2025-02-05 15:39:17,860 INFO L78 Accepts]: Start accepts. Automaton has 16170 states and 28183 transitions. Word has length 206 [2025-02-05 15:39:17,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:17,860 INFO L471 AbstractCegarLoop]: Abstraction has 16170 states and 28183 transitions. [2025-02-05 15:39:17,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16170 states and 28183 transitions. [2025-02-05 15:39:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-02-05 15:39:17,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:17,886 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, 1] [2025-02-05 15:39:17,897 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 15:39:18,087 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 15:39:18,087 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:18,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash 879868678, now seen corresponding path program 1 times [2025-02-05 15:39:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:18,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283338061] [2025-02-05 15:39:18,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:18,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 207 statements into 1 equivalence classes. [2025-02-05 15:39:18,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 207 of 207 statements. [2025-02-05 15:39:18,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:18,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-02-05 15:39:18,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283338061] [2025-02-05 15:39:18,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283338061] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982599675] [2025-02-05 15:39:18,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:18,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:18,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:18,365 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 15:39:18,366 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 15:39:18,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 207 statements into 1 equivalence classes. [2025-02-05 15:39:18,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 207 of 207 statements. [2025-02-05 15:39:18,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:18,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:18,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:39:18,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 15:39:18,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982599675] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:18,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:39:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042487520] [2025-02-05 15:39:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:18,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:39:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:18,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:39:18,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:39:18,718 INFO L87 Difference]: Start difference. First operand 16170 states and 28183 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:19,627 INFO L93 Difference]: Finished difference Result 32551 states and 58300 transitions. [2025-02-05 15:39:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 207 [2025-02-05 15:39:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:19,746 INFO L225 Difference]: With dead ends: 32551 [2025-02-05 15:39:19,746 INFO L226 Difference]: Without dead ends: 16426 [2025-02-05 15:39:19,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 205 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 15:39:19,838 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 842 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:19,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2218 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:39:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16426 states. [2025-02-05 15:39:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16426 to 16426. [2025-02-05 15:39:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16426 states, 12797 states have (on average 1.663749316245995) internal successors, (21291), 13250 states have internal predecessors, (21291), 2858 states have call successors, (2858), 741 states have call predecessors, (2858), 770 states have return successors, (4450), 2850 states have call predecessors, (4450), 2853 states have call successors, (4450) [2025-02-05 15:39:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16426 states to 16426 states and 28599 transitions. [2025-02-05 15:39:20,556 INFO L78 Accepts]: Start accepts. Automaton has 16426 states and 28599 transitions. Word has length 207 [2025-02-05 15:39:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:20,557 INFO L471 AbstractCegarLoop]: Abstraction has 16426 states and 28599 transitions. [2025-02-05 15:39:20,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16426 states and 28599 transitions. [2025-02-05 15:39:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-02-05 15:39:20,575 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:20,575 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, 1, 1] [2025-02-05 15:39:20,587 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 15:39:20,776 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 15:39:20,777 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:20,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1653191343, now seen corresponding path program 1 times [2025-02-05 15:39:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:20,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996158681] [2025-02-05 15:39:20,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:20,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-02-05 15:39:20,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-02-05 15:39:20,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:20,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-02-05 15:39:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996158681] [2025-02-05 15:39:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996158681] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609828191] [2025-02-05 15:39:20,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:20,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:20,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:20,937 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 15:39:20,938 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 15:39:21,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-02-05 15:39:21,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-02-05 15:39:21,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:21,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:21,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:39:21,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 15:39:21,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609828191] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:39:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534186725] [2025-02-05 15:39:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:21,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:39:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:21,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:39:21,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:39:21,342 INFO L87 Difference]: Start difference. First operand 16426 states and 28599 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:22,385 INFO L93 Difference]: Finished difference Result 33063 states and 59036 transitions. [2025-02-05 15:39:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 208 [2025-02-05 15:39:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:22,489 INFO L225 Difference]: With dead ends: 33063 [2025-02-05 15:39:22,490 INFO L226 Difference]: Without dead ends: 16682 [2025-02-05 15:39:22,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 206 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 15:39:22,558 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 825 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:22,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2215 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:39:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2025-02-05 15:39:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 16682. [2025-02-05 15:39:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16682 states, 13021 states have (on average 1.6646186928807312) internal successors, (21675), 13474 states have internal predecessors, (21675), 2858 states have call successors, (2858), 773 states have call predecessors, (2858), 802 states have return successors, (4482), 2850 states have call predecessors, (4482), 2853 states have call successors, (4482) [2025-02-05 15:39:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16682 states to 16682 states and 29015 transitions. [2025-02-05 15:39:23,003 INFO L78 Accepts]: Start accepts. Automaton has 16682 states and 29015 transitions. Word has length 208 [2025-02-05 15:39:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:23,003 INFO L471 AbstractCegarLoop]: Abstraction has 16682 states and 29015 transitions. [2025-02-05 15:39:23,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16682 states and 29015 transitions. [2025-02-05 15:39:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-02-05 15:39:23,162 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:23,162 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, 1, 1, 1] [2025-02-05 15:39:23,170 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 15:39:23,363 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 15:39:23,364 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:23,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1171404631, now seen corresponding path program 1 times [2025-02-05 15:39:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:23,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021923424] [2025-02-05 15:39:23,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:23,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 209 statements into 1 equivalence classes. [2025-02-05 15:39:23,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 209 of 209 statements. [2025-02-05 15:39:23,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:23,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-02-05 15:39:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021923424] [2025-02-05 15:39:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021923424] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050261234] [2025-02-05 15:39:23,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:23,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:23,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:23,481 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 15:39:23,482 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 15:39:23,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 209 statements into 1 equivalence classes. [2025-02-05 15:39:23,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 209 of 209 statements. [2025-02-05 15:39:23,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:23,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:23,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:39:23,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 15:39:23,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:23,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050261234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:23,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:39:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379037039] [2025-02-05 15:39:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:23,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:39:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:23,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:39:23,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:39:23,852 INFO L87 Difference]: Start difference. First operand 16682 states and 29015 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:24,891 INFO L93 Difference]: Finished difference Result 33575 states and 59772 transitions. [2025-02-05 15:39:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:39:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2025-02-05 15:39:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:25,048 INFO L225 Difference]: With dead ends: 33575 [2025-02-05 15:39:25,049 INFO L226 Difference]: Without dead ends: 16938 [2025-02-05 15:39:25,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 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 15:39:25,151 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 830 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:25,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2212 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:39:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16938 states. [2025-02-05 15:39:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16938 to 16938. [2025-02-05 15:39:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16938 states, 13245 states have (on average 1.665458663646659) internal successors, (22059), 13698 states have internal predecessors, (22059), 2858 states have call successors, (2858), 805 states have call predecessors, (2858), 834 states have return successors, (4514), 2850 states have call predecessors, (4514), 2853 states have call successors, (4514) [2025-02-05 15:39:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16938 states to 16938 states and 29431 transitions. [2025-02-05 15:39:25,860 INFO L78 Accepts]: Start accepts. Automaton has 16938 states and 29431 transitions. Word has length 209 [2025-02-05 15:39:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:25,860 INFO L471 AbstractCegarLoop]: Abstraction has 16938 states and 29431 transitions. [2025-02-05 15:39:25,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16938 states and 29431 transitions. [2025-02-05 15:39:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-02-05 15:39:25,875 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:25,875 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, 1, 1, 1, 1] [2025-02-05 15:39:25,888 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 15:39:26,076 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 15:39:26,076 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash 432638578, now seen corresponding path program 1 times [2025-02-05 15:39:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720634223] [2025-02-05 15:39:26,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:26,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-02-05 15:39:26,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-02-05 15:39:26,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:26,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:26,438 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 15:39:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720634223] [2025-02-05 15:39:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720634223] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650419909] [2025-02-05 15:39:26,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:26,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:26,440 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 15:39:26,442 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 15:39:26,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-02-05 15:39:26,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-02-05 15:39:26,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:26,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:26,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:26,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:26,804 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 15:39:26,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:26,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650419909] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:26,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676525713] [2025-02-05 15:39:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:26,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:26,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:26,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:26,807 INFO L87 Difference]: Start difference. First operand 16938 states and 29431 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:27,466 INFO L93 Difference]: Finished difference Result 35271 states and 62652 transitions. [2025-02-05 15:39:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 210 [2025-02-05 15:39:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:27,583 INFO L225 Difference]: With dead ends: 35271 [2025-02-05 15:39:27,583 INFO L226 Difference]: Without dead ends: 18378 [2025-02-05 15:39:27,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:39:27,659 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 144 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:27,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2449 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:39:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2025-02-05 15:39:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 18186. [2025-02-05 15:39:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18186 states, 14461 states have (on average 1.686951109881751) internal successors, (24395), 14914 states have internal predecessors, (24395), 2858 states have call successors, (2858), 837 states have call predecessors, (2858), 866 states have return successors, (4514), 2850 states have call predecessors, (4514), 2853 states have call successors, (4514) [2025-02-05 15:39:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18186 states to 18186 states and 31767 transitions. [2025-02-05 15:39:28,276 INFO L78 Accepts]: Start accepts. Automaton has 18186 states and 31767 transitions. Word has length 210 [2025-02-05 15:39:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:28,277 INFO L471 AbstractCegarLoop]: Abstraction has 18186 states and 31767 transitions. [2025-02-05 15:39:28,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 18186 states and 31767 transitions. [2025-02-05 15:39:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-02-05 15:39:28,289 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:28,289 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1] [2025-02-05 15:39:28,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 15:39:28,494 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 15:39:28,494 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:28,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash -508954185, now seen corresponding path program 1 times [2025-02-05 15:39:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209461189] [2025-02-05 15:39:28,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:28,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-02-05 15:39:28,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-02-05 15:39:28,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:28,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-05 15:39:28,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209461189] [2025-02-05 15:39:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209461189] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568114585] [2025-02-05 15:39:28,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:28,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:28,715 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 15:39:28,716 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 15:39:28,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-02-05 15:39:28,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-02-05 15:39:28,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:28,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:28,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:28,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:39:29,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568114585] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:29,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:29,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672513946] [2025-02-05 15:39:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:29,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:29,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:29,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:29,142 INFO L87 Difference]: Start difference. First operand 18186 states and 31767 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:29,678 INFO L93 Difference]: Finished difference Result 37767 states and 67420 transitions. [2025-02-05 15:39:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:29,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 215 [2025-02-05 15:39:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:29,828 INFO L225 Difference]: With dead ends: 37767 [2025-02-05 15:39:29,828 INFO L226 Difference]: Without dead ends: 19626 [2025-02-05 15:39:29,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:39:29,910 INFO L435 NwaCegarLoop]: 827 mSDtfsCounter, 139 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:29,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2451 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19626 states. [2025-02-05 15:39:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19626 to 19434. [2025-02-05 15:39:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19434 states, 15645 states have (on average 1.7065516139341643) internal successors, (26699), 16098 states have internal predecessors, (26699), 2890 states have call successors, (2890), 869 states have call predecessors, (2890), 898 states have return successors, (4546), 2882 states have call predecessors, (4546), 2885 states have call successors, (4546) [2025-02-05 15:39:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19434 states to 19434 states and 34135 transitions. [2025-02-05 15:39:30,519 INFO L78 Accepts]: Start accepts. Automaton has 19434 states and 34135 transitions. Word has length 215 [2025-02-05 15:39:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:30,520 INFO L471 AbstractCegarLoop]: Abstraction has 19434 states and 34135 transitions. [2025-02-05 15:39:30,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 19434 states and 34135 transitions. [2025-02-05 15:39:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-02-05 15:39:30,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:30,532 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2025-02-05 15:39:30,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 15:39:30,733 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 15:39:30,733 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:30,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1140322301, now seen corresponding path program 1 times [2025-02-05 15:39:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082821718] [2025-02-05 15:39:30,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:30,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-02-05 15:39:30,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-02-05 15:39:30,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:30,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-05 15:39:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082821718] [2025-02-05 15:39:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082821718] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209090950] [2025-02-05 15:39:30,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:30,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:30,942 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 15:39:30,943 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 15:39:31,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-02-05 15:39:31,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-02-05 15:39:31,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:31,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:31,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:31,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 15:39:31,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209090950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:31,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107692717] [2025-02-05 15:39:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:31,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:31,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:31,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:31,243 INFO L87 Difference]: Start difference. First operand 19434 states and 34135 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:31,966 INFO L93 Difference]: Finished difference Result 40359 states and 72092 transitions. [2025-02-05 15:39:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 216 [2025-02-05 15:39:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:32,120 INFO L225 Difference]: With dead ends: 40359 [2025-02-05 15:39:32,121 INFO L226 Difference]: Without dead ends: 20970 [2025-02-05 15:39:32,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 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 15:39:32,228 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 142 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:32,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2446 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20970 states. [2025-02-05 15:39:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20970 to 20682. [2025-02-05 15:39:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20682 states, 16861 states have (on average 1.7220212324298678) internal successors, (29035), 17314 states have internal predecessors, (29035), 2890 states have call successors, (2890), 901 states have call predecessors, (2890), 930 states have return successors, (4546), 2882 states have call predecessors, (4546), 2885 states have call successors, (4546) [2025-02-05 15:39:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 36471 transitions. [2025-02-05 15:39:33,201 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 36471 transitions. Word has length 216 [2025-02-05 15:39:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:33,206 INFO L471 AbstractCegarLoop]: Abstraction has 20682 states and 36471 transitions. [2025-02-05 15:39:33,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 36471 transitions. [2025-02-05 15:39:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-02-05 15:39:33,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:33,230 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:39:33,239 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 15:39:33,431 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 15:39:33,431 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:33,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash 977600995, now seen corresponding path program 1 times [2025-02-05 15:39:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278951500] [2025-02-05 15:39:33,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:33,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-02-05 15:39:33,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-02-05 15:39:33,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:33,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 15:39:33,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278951500] [2025-02-05 15:39:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278951500] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017319878] [2025-02-05 15:39:33,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:33,659 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 15:39:33,667 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 15:39:33,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-02-05 15:39:33,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-02-05 15:39:33,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:33,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:33,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:33,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:39:33,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:33,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017319878] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:33,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352217634] [2025-02-05 15:39:33,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:33,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:33,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:33,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:33,992 INFO L87 Difference]: Start difference. First operand 20682 states and 36471 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:34,658 INFO L93 Difference]: Finished difference Result 42855 states and 76892 transitions. [2025-02-05 15:39:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 220 [2025-02-05 15:39:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:34,798 INFO L225 Difference]: With dead ends: 42855 [2025-02-05 15:39:34,799 INFO L226 Difference]: Without dead ends: 22218 [2025-02-05 15:39:34,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 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 15:39:34,867 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 138 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:34,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2438 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22218 states. [2025-02-05 15:39:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22218 to 21930. [2025-02-05 15:39:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21930 states, 18045 states have (on average 1.7367137711277363) internal successors, (31339), 18498 states have internal predecessors, (31339), 2922 states have call successors, (2922), 933 states have call predecessors, (2922), 962 states have return successors, (4578), 2914 states have call predecessors, (4578), 2917 states have call successors, (4578) [2025-02-05 15:39:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21930 states to 21930 states and 38839 transitions. [2025-02-05 15:39:35,510 INFO L78 Accepts]: Start accepts. Automaton has 21930 states and 38839 transitions. Word has length 220 [2025-02-05 15:39:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:35,511 INFO L471 AbstractCegarLoop]: Abstraction has 21930 states and 38839 transitions. [2025-02-05 15:39:35,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 21930 states and 38839 transitions. [2025-02-05 15:39:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2025-02-05 15:39:35,524 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:35,524 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:39:35,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 15:39:35,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:35,729 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:35,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash -764512092, now seen corresponding path program 1 times [2025-02-05 15:39:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477439428] [2025-02-05 15:39:35,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:35,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-02-05 15:39:35,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-02-05 15:39:35,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:35,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 15:39:35,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:35,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477439428] [2025-02-05 15:39:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477439428] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:35,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175908791] [2025-02-05 15:39:35,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:35,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:35,958 INFO L229 MonitoredProcess]: Starting monitored process 15 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 15:39:35,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 15:39:36,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-02-05 15:39:36,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-02-05 15:39:36,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:36,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:36,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:36,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:39:36,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175908791] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256604808] [2025-02-05 15:39:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:36,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:36,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:36,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:36,281 INFO L87 Difference]: Start difference. First operand 21930 states and 38839 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:37,082 INFO L93 Difference]: Finished difference Result 45447 states and 81532 transitions. [2025-02-05 15:39:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 221 [2025-02-05 15:39:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:37,277 INFO L225 Difference]: With dead ends: 45447 [2025-02-05 15:39:37,278 INFO L226 Difference]: Without dead ends: 23562 [2025-02-05 15:39:37,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 227 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 15:39:37,385 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 140 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:37,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2443 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23562 states. [2025-02-05 15:39:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23562 to 23178. [2025-02-05 15:39:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23178 states, 19261 states have (on average 1.7483515912984788) internal successors, (33675), 19714 states have internal predecessors, (33675), 2922 states have call successors, (2922), 965 states have call predecessors, (2922), 994 states have return successors, (4578), 2914 states have call predecessors, (4578), 2917 states have call successors, (4578) [2025-02-05 15:39:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23178 states to 23178 states and 41175 transitions. [2025-02-05 15:39:38,306 INFO L78 Accepts]: Start accepts. Automaton has 23178 states and 41175 transitions. Word has length 221 [2025-02-05 15:39:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:38,306 INFO L471 AbstractCegarLoop]: Abstraction has 23178 states and 41175 transitions. [2025-02-05 15:39:38,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:39:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 23178 states and 41175 transitions. [2025-02-05 15:39:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2025-02-05 15:39:38,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:38,319 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:38,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 15:39:38,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 15:39:38,520 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:38,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -475048735, now seen corresponding path program 1 times [2025-02-05 15:39:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:38,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788494812] [2025-02-05 15:39:38,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:38,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:38,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 224 statements into 1 equivalence classes. [2025-02-05 15:39:38,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 224 of 224 statements. [2025-02-05 15:39:38,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:38,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2025-02-05 15:39:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788494812] [2025-02-05 15:39:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788494812] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769682165] [2025-02-05 15:39:38,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:38,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:38,719 INFO L229 MonitoredProcess]: Starting monitored process 16 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 15:39:38,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 15:39:38,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 224 statements into 1 equivalence classes. [2025-02-05 15:39:38,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 224 of 224 statements. [2025-02-05 15:39:38,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:38,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:39,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:39:39,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 15:39:39,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:39:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769682165] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:39:39,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:39:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:39:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570890418] [2025-02-05 15:39:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:39:39,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:39:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:39,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:39:39,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:39:39,032 INFO L87 Difference]: Start difference. First operand 23178 states and 41175 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:39:39,656 INFO L93 Difference]: Finished difference Result 47943 states and 86364 transitions. [2025-02-05 15:39:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:39:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 224 [2025-02-05 15:39:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:39:39,794 INFO L225 Difference]: With dead ends: 47943 [2025-02-05 15:39:39,794 INFO L226 Difference]: Without dead ends: 24810 [2025-02-05 15:39:39,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 229 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 15:39:39,872 INFO L435 NwaCegarLoop]: 825 mSDtfsCounter, 135 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:39:39,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2445 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:39:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24810 states. [2025-02-05 15:39:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24810 to 24426. [2025-02-05 15:39:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24426 states, 20445 states have (on average 1.7597945707997065) internal successors, (35979), 20898 states have internal predecessors, (35979), 2954 states have call successors, (2954), 997 states have call predecessors, (2954), 1026 states have return successors, (4610), 2946 states have call predecessors, (4610), 2949 states have call successors, (4610) [2025-02-05 15:39:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24426 states to 24426 states and 43543 transitions. [2025-02-05 15:39:40,646 INFO L78 Accepts]: Start accepts. Automaton has 24426 states and 43543 transitions. Word has length 224 [2025-02-05 15:39:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:39:40,647 INFO L471 AbstractCegarLoop]: Abstraction has 24426 states and 43543 transitions. [2025-02-05 15:39:40,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-05 15:39:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24426 states and 43543 transitions. [2025-02-05 15:39:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2025-02-05 15:39:40,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:39:40,659 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2025-02-05 15:39:40,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 15:39:40,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-05 15:39:40,864 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:39:40,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:39:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 649488657, now seen corresponding path program 1 times [2025-02-05 15:39:40,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:39:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915727544] [2025-02-05 15:39:40,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:40,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:39:40,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 327 statements into 1 equivalence classes. [2025-02-05 15:39:40,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 327 of 327 statements. [2025-02-05 15:39:40,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:40,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2025-02-05 15:39:41,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:39:41,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915727544] [2025-02-05 15:39:41,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915727544] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:39:41,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818907971] [2025-02-05 15:39:41,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:39:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:39:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:39:41,599 INFO L229 MonitoredProcess]: Starting monitored process 17 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 15:39:41,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 15:39:41,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 327 statements into 1 equivalence classes. [2025-02-05 15:39:42,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 327 of 327 statements. [2025-02-05 15:39:42,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:39:42,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:39:42,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 15:39:42,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:39:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 15:39:42,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:39:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 15:39:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818907971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:39:43,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:39:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 16 [2025-02-05 15:39:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389326490] [2025-02-05 15:39:43,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:39:43,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 15:39:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:39:43,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 15:39:43,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:39:43,061 INFO L87 Difference]: Start difference. First operand 24426 states and 43543 transitions. Second operand has 16 states, 16 states have (on average 17.1875) internal successors, (275), 14 states have internal predecessors, (275), 9 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (60), 12 states have call predecessors, (60), 8 states have call successors, (60) [2025-02-05 15:40:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:40:07,157 INFO L93 Difference]: Finished difference Result 246448 states and 553198 transitions. [2025-02-05 15:40:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-02-05 15:40:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 17.1875) internal successors, (275), 14 states have internal predecessors, (275), 9 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (60), 12 states have call predecessors, (60), 8 states have call successors, (60) Word has length 327 [2025-02-05 15:40:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:40:10,244 INFO L225 Difference]: With dead ends: 246448 [2025-02-05 15:40:10,244 INFO L226 Difference]: Without dead ends: 222067 [2025-02-05 15:40:10,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 683 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=772, Invalid=5080, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 15:40:10,821 INFO L435 NwaCegarLoop]: 1800 mSDtfsCounter, 18143 mSDsluCounter, 11284 mSDsCounter, 0 mSdLazyCounter, 32793 mSolverCounterSat, 7337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18143 SdHoareTripleChecker+Valid, 13084 SdHoareTripleChecker+Invalid, 40130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7337 IncrementalHoareTripleChecker+Valid, 32793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:40:10,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18143 Valid, 13084 Invalid, 40130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7337 Valid, 32793 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2025-02-05 15:40:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222067 states. [2025-02-05 15:40:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222067 to 187344. [2025-02-05 15:40:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187344 states, 146176 states have (on average 1.7072501641856392) internal successors, (249559), 152741 states have internal predecessors, (249559), 32844 states have call successors, (32844), 5958 states have call predecessors, (32844), 8323 states have return successors, (88082), 33956 states have call predecessors, (88082), 32839 states have call successors, (88082)