./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product03.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_spec1_product03.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 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:32:27,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:32:27,296 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:32:27,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:32:27,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:32:27,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:32:27,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:32:27,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:32:27,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:32:27,330 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:32:27,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:32:27,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:32:27,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:32:27,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:32:27,332 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:32:27,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:32:27,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:32:27,334 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:32:27,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:32:27,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:32:27,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:32:27,335 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 -> 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 [2025-02-05 15:32:27,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:32:27,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:32:27,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:32:27,590 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:32:27,590 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:32:27,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2025-02-05 15:32:28,779 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/694df4b55/3980b33e000340818a782b62d3c528d9/FLAG5ac0b55ae [2025-02-05 15:32:29,139 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:32:29,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2025-02-05 15:32:29,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/694df4b55/3980b33e000340818a782b62d3c528d9/FLAG5ac0b55ae [2025-02-05 15:32:29,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/694df4b55/3980b33e000340818a782b62d3c528d9 [2025-02-05 15:32:29,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:32:29,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:32:29,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:32:29,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:32:29,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:32:29,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:29,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338fa27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29, skipping insertion in model container [2025-02-05 15:32:29,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:29,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:32:29,705 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_spec1_product03.cil.c[49188,49201] [2025-02-05 15:32:29,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:32:29,754 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:32:29,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2025-02-05 15:32:29,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2025-02-05 15:32:29,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [552] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [568] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2078] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2260] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2269] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2934] [2025-02-05 15:32:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3053] [2025-02-05 15:32:29,846 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_spec1_product03.cil.c[49188,49201] [2025-02-05 15:32:29,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:32:29,908 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:32:29,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29 WrapperNode [2025-02-05 15:32:29,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:32:29,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:32:29,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:32:29,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:32:29,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:29,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:29,999 INFO L138 Inliner]: procedures = 92, calls = 337, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1056 [2025-02-05 15:32:30,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:32:30,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:32:30,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:32:30,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:32:30,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,015 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,040 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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 15:32:30,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,052 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:32:30,065 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:32:30,065 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:32:30,065 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:32:30,065 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (1/1) ... [2025-02-05 15:32:30,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:32:30,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:30,090 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 15:32:30,100 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 15:32:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-02-05 15:32:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-02-05 15:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-02-05 15:32:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-02-05 15:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:32:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:32:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:32:30,117 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:32:30,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:32:30,117 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:32:30,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:32:30,117 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:32:30,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:32:30,118 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:32:30,118 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:32:30,118 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-02-05 15:32:30,119 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-02-05 15:32:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:32:30,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:32:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:32:30,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:32:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:32:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:32:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:32:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:32:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:32:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:32:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:32:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:32:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:32:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:32:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:32:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:32:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-02-05 15:32:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:32:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:32:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:32:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:32:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:32:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:32:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:32:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:32:30,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:32:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:32:30,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:32:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:32:30,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:32:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:32:30,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:32:30,281 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:32:30,284 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:32:30,327 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3050: #res := ~retValue_acc~27; [2025-02-05 15:32:30,329 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L652: #res := ~retValue_acc~5; [2025-02-05 15:32:30,335 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L781: #res := ~retValue_acc~6; [2025-02-05 15:32:30,360 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2066: #res := ~retValue_acc~20; [2025-02-05 15:32:30,640 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1318-1: stopRequestedInDirection__wrappee__base_#res#1 := stopRequestedInDirection__wrappee__base_~retValue_acc~13#1; [2025-02-05 15:32:30,640 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1347: #res#1 := ~retValue_acc~14#1; [2025-02-05 15:32:30,692 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1482: #res := ~retValue_acc~18; [2025-02-05 15:32:30,703 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3011: #res := ~retValue_acc~26; [2025-02-05 15:32:30,738 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1437: #res#1 := ~retValue_acc~16#1; [2025-02-05 15:32:30,738 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L824-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~8#1; [2025-02-05 15:32:30,831 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~11#1; [2025-02-05 15:32:30,832 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L966-1: isIdle_#res#1 := isIdle_~retValue_acc~12#1; [2025-02-05 15:32:30,971 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1468-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-02-05 15:32:31,030 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2620: #res := ~retValue_acc~23; [2025-02-05 15:32:31,095 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L83-1: valid_product_#res#1 := valid_product_~retValue_acc~1#1; [2025-02-05 15:32:31,096 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3400-1: main_#res#1 := main_~retValue_acc~29#1; [2025-02-05 15:32:31,105 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2380: #res := ~retValue_acc~22; [2025-02-05 15:32:31,106 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L790: #res := ~retValue_acc~7; [2025-02-05 15:32:31,109 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2931: #res := ~retValue_acc~24; [2025-02-05 15:32:31,217 INFO L? ?]: Removed 431 outVars from TransFormulas that were not future-live. [2025-02-05 15:32:31,217 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:32:31,237 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:32:31,237 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:32:31,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:32:31 BoogieIcfgContainer [2025-02-05 15:32:31,238 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:32:31,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:32:31,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:32:31,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:32:31,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:32:29" (1/3) ... [2025-02-05 15:32:31,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af05799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:32:31, skipping insertion in model container [2025-02-05 15:32:31,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:32:29" (2/3) ... [2025-02-05 15:32:31,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af05799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:32:31, skipping insertion in model container [2025-02-05 15:32:31,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:32:31" (3/3) ... [2025-02-05 15:32:31,244 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2025-02-05 15:32:31,254 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:32:31,257 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product03.cil.c that has 25 procedures, 552 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:32:31,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:32:31,316 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;@3eb6c571, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:32:31,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:32:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 552 states, 428 states have (on average 1.689252336448598) internal successors, (723), 450 states have internal predecessors, (723), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:32:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-02-05 15:32:31,338 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:31,339 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:31,340 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:31,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1570347109, now seen corresponding path program 1 times [2025-02-05 15:32:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:31,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232098070] [2025-02-05 15:32:31,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:31,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-02-05 15:32:31,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 15:32:31,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:31,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:31,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232098070] [2025-02-05 15:32:31,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232098070] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955780915] [2025-02-05 15:32:31,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:31,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:31,915 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 15:32:31,918 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 15:32:32,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-02-05 15:32:32,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 15:32:32,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:32,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:32,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:32,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:32,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955780915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:32,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92795134] [2025-02-05 15:32:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:32,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:32,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:32,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:32,388 INFO L87 Difference]: Start difference. First operand has 552 states, 428 states have (on average 1.689252336448598) internal successors, (723), 450 states have internal predecessors, (723), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:32,522 INFO L93 Difference]: Finished difference Result 1093 states and 1824 transitions. [2025-02-05 15:32:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:32:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2025-02-05 15:32:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:32,535 INFO L225 Difference]: With dead ends: 1093 [2025-02-05 15:32:32,535 INFO L226 Difference]: Without dead ends: 543 [2025-02-05 15:32:32,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:32,542 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 5 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:32,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2685 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2025-02-05 15:32:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2025-02-05 15:32:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 422 states have (on average 1.6824644549763033) internal successors, (710), 441 states have internal predecessors, (710), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 899 transitions. [2025-02-05 15:32:32,596 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 899 transitions. Word has length 143 [2025-02-05 15:32:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:32,596 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 899 transitions. [2025-02-05 15:32:32,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 899 transitions. [2025-02-05 15:32:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 15:32:32,616 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:32,616 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:32,627 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 15:32:32,821 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,SelfDestructingSolverStorable0 [2025-02-05 15:32:32,821 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:32,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash 829276447, now seen corresponding path program 1 times [2025-02-05 15:32:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:32,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971123064] [2025-02-05 15:32:32,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:32,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:32,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 15:32:32,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 15:32:32,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:32,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971123064] [2025-02-05 15:32:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971123064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540580506] [2025-02-05 15:32:33,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:33,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:33,097 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 15:32:33,103 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 15:32:33,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 15:32:33,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 15:32:33,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:33,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:33,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:33,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:33,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540580506] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202113669] [2025-02-05 15:32:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:33,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:33,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:33,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:33,434 INFO L87 Difference]: Start difference. First operand 543 states and 899 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:33,498 INFO L93 Difference]: Finished difference Result 1077 states and 1790 transitions. [2025-02-05 15:32:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:32:33,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2025-02-05 15:32:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:33,505 INFO L225 Difference]: With dead ends: 1077 [2025-02-05 15:32:33,505 INFO L226 Difference]: Without dead ends: 543 [2025-02-05 15:32:33,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:33,507 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 4 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:33,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2658 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2025-02-05 15:32:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2025-02-05 15:32:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 422 states have (on average 1.680094786729858) internal successors, (709), 441 states have internal predecessors, (709), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 898 transitions. [2025-02-05 15:32:33,530 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 898 transitions. Word has length 145 [2025-02-05 15:32:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:33,531 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 898 transitions. [2025-02-05 15:32:33,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 898 transitions. [2025-02-05 15:32:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-02-05 15:32:33,534 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:33,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:33,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:32:33,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:33,739 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:33,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1065888763, now seen corresponding path program 1 times [2025-02-05 15:32:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095851228] [2025-02-05 15:32:33,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:33,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:32:33,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:32:33,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:33,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:33,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095851228] [2025-02-05 15:32:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095851228] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367471318] [2025-02-05 15:32:33,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:33,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:33,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:33,879 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 15:32:33,880 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 15:32:33,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:32:34,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:32:34,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:34,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:34,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:34,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:34,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367471318] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262656087] [2025-02-05 15:32:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:34,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:34,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:34,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:34,213 INFO L87 Difference]: Start difference. First operand 543 states and 898 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:34,289 INFO L93 Difference]: Finished difference Result 1084 states and 1797 transitions. [2025-02-05 15:32:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2025-02-05 15:32:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:34,294 INFO L225 Difference]: With dead ends: 1084 [2025-02-05 15:32:34,294 INFO L226 Difference]: Without dead ends: 552 [2025-02-05 15:32:34,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:34,296 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 13 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:34,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2655 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-02-05 15:32:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-02-05 15:32:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 430 states have (on average 1.6767441860465115) internal successors, (721), 449 states have internal predecessors, (721), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 910 transitions. [2025-02-05 15:32:34,313 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 910 transitions. Word has length 147 [2025-02-05 15:32:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:34,314 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 910 transitions. [2025-02-05 15:32:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 910 transitions. [2025-02-05 15:32:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-05 15:32:34,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:34,317 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:34,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:34,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:34,522 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:34,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -786084231, now seen corresponding path program 1 times [2025-02-05 15:32:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38756418] [2025-02-05 15:32:34,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:34,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:32:34,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:32:34,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:34,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:34,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38756418] [2025-02-05 15:32:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38756418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:34,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453380001] [2025-02-05 15:32:34,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:34,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:34,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:34,778 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 15:32:34,780 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 15:32:34,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:32:35,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:32:35,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:35,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:35,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:35,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:35,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453380001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:35,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656538004] [2025-02-05 15:32:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:35,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:35,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:35,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:35,101 INFO L87 Difference]: Start difference. First operand 552 states and 910 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:35,162 INFO L93 Difference]: Finished difference Result 1086 states and 1798 transitions. [2025-02-05 15:32:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2025-02-05 15:32:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:35,167 INFO L225 Difference]: With dead ends: 1086 [2025-02-05 15:32:35,167 INFO L226 Difference]: Without dead ends: 552 [2025-02-05 15:32:35,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:35,169 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 11 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:35,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2655 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-02-05 15:32:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-02-05 15:32:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 430 states have (on average 1.6744186046511629) internal successors, (720), 449 states have internal predecessors, (720), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 909 transitions. [2025-02-05 15:32:35,195 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 909 transitions. Word has length 148 [2025-02-05 15:32:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:35,195 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 909 transitions. [2025-02-05 15:32:35,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 909 transitions. [2025-02-05 15:32:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-05 15:32:35,199 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:35,199 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:35,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:32:35,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:35,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:35,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1097095368, now seen corresponding path program 1 times [2025-02-05 15:32:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:35,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876512326] [2025-02-05 15:32:35,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:35,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:32:35,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:32:35,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:35,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:35,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:35,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876512326] [2025-02-05 15:32:35,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876512326] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:35,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302030884] [2025-02-05 15:32:35,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:35,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:35,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:35,581 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 15:32:35,586 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 15:32:35,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:32:36,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:32:36,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:36,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:36,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:36,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:36,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302030884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656755511] [2025-02-05 15:32:36,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:36,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:36,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:36,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:36,146 INFO L87 Difference]: Start difference. First operand 552 states and 909 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:36,198 INFO L93 Difference]: Finished difference Result 1086 states and 1797 transitions. [2025-02-05 15:32:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2025-02-05 15:32:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:36,201 INFO L225 Difference]: With dead ends: 1086 [2025-02-05 15:32:36,201 INFO L226 Difference]: Without dead ends: 552 [2025-02-05 15:32:36,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:36,205 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 10 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:36,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2655 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-02-05 15:32:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-02-05 15:32:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 430 states have (on average 1.672093023255814) internal successors, (719), 449 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 908 transitions. [2025-02-05 15:32:36,233 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 908 transitions. Word has length 149 [2025-02-05 15:32:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:36,233 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 908 transitions. [2025-02-05 15:32:36,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 908 transitions. [2025-02-05 15:32:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-02-05 15:32:36,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:36,238 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:36,245 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 15:32:36,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:36,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:36,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:36,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1145294492, now seen corresponding path program 1 times [2025-02-05 15:32:36,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:36,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523259076] [2025-02-05 15:32:36,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:36,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:32:36,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:32:36,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:36,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523259076] [2025-02-05 15:32:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523259076] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294586465] [2025-02-05 15:32:36,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:36,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:36,665 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 15:32:36,666 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 15:32:36,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:32:36,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:32:36,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:36,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:36,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:36,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:32:36,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:36,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294586465] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:36,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:36,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:32:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453497926] [2025-02-05 15:32:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:36,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:36,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:36,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:36,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:36,963 INFO L87 Difference]: Start difference. First operand 552 states and 908 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:37,072 INFO L93 Difference]: Finished difference Result 1112 states and 1844 transitions. [2025-02-05 15:32:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:32:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2025-02-05 15:32:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:37,076 INFO L225 Difference]: With dead ends: 1112 [2025-02-05 15:32:37,076 INFO L226 Difference]: Without dead ends: 567 [2025-02-05 15:32:37,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:37,078 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 76 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:37,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2546 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-02-05 15:32:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 552. [2025-02-05 15:32:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 430 states have (on average 1.6604651162790698) internal successors, (714), 449 states have internal predecessors, (714), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 903 transitions. [2025-02-05 15:32:37,104 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 903 transitions. Word has length 150 [2025-02-05 15:32:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:37,104 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 903 transitions. [2025-02-05 15:32:37,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 903 transitions. [2025-02-05 15:32:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-05 15:32:37,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:37,111 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:37,127 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 15:32:37,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 15:32:37,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:37,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2009973600, now seen corresponding path program 1 times [2025-02-05 15:32:37,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:37,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542921985] [2025-02-05 15:32:37,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:37,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:37,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-05 15:32:37,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 15:32:37,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:37,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542921985] [2025-02-05 15:32:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542921985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216564404] [2025-02-05 15:32:37,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:37,509 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 15:32:37,511 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 15:32:37,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-05 15:32:37,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 15:32:37,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:37,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:37,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:37,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:32:37,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216564404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:37,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:37,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:32:37,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272723731] [2025-02-05 15:32:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:37,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:37,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:37,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:37,827 INFO L87 Difference]: Start difference. First operand 552 states and 903 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:37,920 INFO L93 Difference]: Finished difference Result 1112 states and 1834 transitions. [2025-02-05 15:32:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:32:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2025-02-05 15:32:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:37,924 INFO L225 Difference]: With dead ends: 1112 [2025-02-05 15:32:37,924 INFO L226 Difference]: Without dead ends: 567 [2025-02-05 15:32:37,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:37,926 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 75 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:37,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2546 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-02-05 15:32:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 552. [2025-02-05 15:32:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 430 states have (on average 1.6488372093023256) internal successors, (709), 449 states have internal predecessors, (709), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 898 transitions. [2025-02-05 15:32:37,957 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 898 transitions. Word has length 152 [2025-02-05 15:32:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:37,957 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 898 transitions. [2025-02-05 15:32:37,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 898 transitions. [2025-02-05 15:32:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-05 15:32:37,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:37,960 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:37,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:38,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:38,161 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:38,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1732442180, now seen corresponding path program 1 times [2025-02-05 15:32:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252195064] [2025-02-05 15:32:38,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:38,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 15:32:38,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 15:32:38,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:38,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252195064] [2025-02-05 15:32:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252195064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456262124] [2025-02-05 15:32:38,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:38,338 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 15:32:38,339 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 15:32:38,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 15:32:38,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 15:32:38,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:38,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:38,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:38,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:32:38,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456262124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:38,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:32:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909572676] [2025-02-05 15:32:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:38,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:38,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:38,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:38,657 INFO L87 Difference]: Start difference. First operand 552 states and 898 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:38,809 INFO L93 Difference]: Finished difference Result 1163 states and 1907 transitions. [2025-02-05 15:32:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2025-02-05 15:32:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:38,813 INFO L225 Difference]: With dead ends: 1163 [2025-02-05 15:32:38,813 INFO L226 Difference]: Without dead ends: 633 [2025-02-05 15:32:38,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:32:38,816 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 130 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:38,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2577 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2025-02-05 15:32:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2025-02-05 15:32:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 480 states have (on average 1.6541666666666666) internal successors, (794), 499 states have internal predecessors, (794), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 983 transitions. [2025-02-05 15:32:38,834 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 983 transitions. Word has length 154 [2025-02-05 15:32:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:38,834 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 983 transitions. [2025-02-05 15:32:38,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 983 transitions. [2025-02-05 15:32:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 15:32:38,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:38,837 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:38,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 15:32:39,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:39,042 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:39,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -883367127, now seen corresponding path program 1 times [2025-02-05 15:32:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:39,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799428208] [2025-02-05 15:32:39,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:39,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:39,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:39,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:39,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799428208] [2025-02-05 15:32:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799428208] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312033939] [2025-02-05 15:32:39,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:39,200 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 15:32:39,203 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 15:32:39,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:39,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:39,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:39,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:39,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:39,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:32:39,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:39,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312033939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:39,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:39,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:32:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573688056] [2025-02-05 15:32:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:39,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:39,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:39,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:39,518 INFO L87 Difference]: Start difference. First operand 603 states and 983 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:39,656 INFO L93 Difference]: Finished difference Result 1178 states and 1931 transitions. [2025-02-05 15:32:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:39,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2025-02-05 15:32:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:39,660 INFO L225 Difference]: With dead ends: 1178 [2025-02-05 15:32:39,660 INFO L226 Difference]: Without dead ends: 633 [2025-02-05 15:32:39,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:32:39,663 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 124 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:39,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2550 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2025-02-05 15:32:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2025-02-05 15:32:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 480 states have (on average 1.64375) internal successors, (789), 499 states have internal predecessors, (789), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 15:32:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 978 transitions. [2025-02-05 15:32:39,697 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 978 transitions. Word has length 155 [2025-02-05 15:32:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:39,698 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 978 transitions. [2025-02-05 15:32:39,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 978 transitions. [2025-02-05 15:32:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 15:32:39,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:39,700 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:39,709 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 15:32:39,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:39,902 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:39,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash 817922341, now seen corresponding path program 1 times [2025-02-05 15:32:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233267785] [2025-02-05 15:32:39,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:39,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:39,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:39,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:39,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:39,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233267785] [2025-02-05 15:32:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233267785] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:40,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527256378] [2025-02-05 15:32:40,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:40,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:40,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:40,023 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 15:32:40,028 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 15:32:40,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:40,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:40,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:40,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:40,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:32:40,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:32:40,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:40,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527256378] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:40,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:40,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:32:40,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608562153] [2025-02-05 15:32:40,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:40,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:32:40,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:40,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:32:40,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:32:40,383 INFO L87 Difference]: Start difference. First operand 603 states and 978 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:40,518 INFO L93 Difference]: Finished difference Result 1171 states and 1911 transitions. [2025-02-05 15:32:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:32:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2025-02-05 15:32:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:40,525 INFO L225 Difference]: With dead ends: 1171 [2025-02-05 15:32:40,525 INFO L226 Difference]: Without dead ends: 641 [2025-02-05 15:32:40,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:32:40,527 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 113 mSDsluCounter, 5119 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5987 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:40,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5987 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-02-05 15:32:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 622. [2025-02-05 15:32:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 496 states have (on average 1.6431451612903225) internal successors, (815), 517 states have internal predecessors, (815), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-02-05 15:32:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1008 transitions. [2025-02-05 15:32:40,550 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1008 transitions. Word has length 155 [2025-02-05 15:32:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:40,550 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1008 transitions. [2025-02-05 15:32:40,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1008 transitions. [2025-02-05 15:32:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 15:32:40,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:40,553 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:40,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 15:32:40,757 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,SelfDestructingSolverStorable9 [2025-02-05 15:32:40,757 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:40,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1897464388, now seen corresponding path program 1 times [2025-02-05 15:32:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333744156] [2025-02-05 15:32:40,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:40,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:40,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:40,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:40,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:40,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:40,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333744156] [2025-02-05 15:32:40,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333744156] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:40,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032515737] [2025-02-05 15:32:40,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:40,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:40,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:40,830 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 15:32:40,832 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 15:32:40,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:32:41,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:32:41,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:41,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:41,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:32:41,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:41,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032515737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:32:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554015388] [2025-02-05 15:32:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:41,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:32:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:41,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:32:41,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:32:41,148 INFO L87 Difference]: Start difference. First operand 622 states and 1008 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:41,223 INFO L93 Difference]: Finished difference Result 1109 states and 1811 transitions. [2025-02-05 15:32:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:32:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2025-02-05 15:32:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:41,228 INFO L225 Difference]: With dead ends: 1109 [2025-02-05 15:32:41,228 INFO L226 Difference]: Without dead ends: 646 [2025-02-05 15:32:41,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:32:41,231 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 86 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:41,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5207 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2025-02-05 15:32:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 641. [2025-02-05 15:32:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 512 states have (on average 1.642578125) internal successors, (841), 535 states have internal predecessors, (841), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1038 transitions. [2025-02-05 15:32:41,264 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1038 transitions. Word has length 155 [2025-02-05 15:32:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:41,264 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1038 transitions. [2025-02-05 15:32:41,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1038 transitions. [2025-02-05 15:32:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-05 15:32:41,268 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:41,268 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:41,276 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 15:32:41,468 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,SelfDestructingSolverStorable10 [2025-02-05 15:32:41,469 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:41,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash -210288896, now seen corresponding path program 1 times [2025-02-05 15:32:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354754030] [2025-02-05 15:32:41,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:41,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:41,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:41,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:41,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:41,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:41,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354754030] [2025-02-05 15:32:41,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354754030] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791422375] [2025-02-05 15:32:41,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:41,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:41,538 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 15:32:41,540 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 15:32:41,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:41,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:41,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:41,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:41,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:32:41,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:41,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791422375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:41,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:32:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784316104] [2025-02-05 15:32:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:41,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:32:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:41,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:32:41,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:32:41,861 INFO L87 Difference]: Start difference. First operand 641 states and 1038 transitions. Second operand has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:41,927 INFO L93 Difference]: Finished difference Result 1139 states and 1862 transitions. [2025-02-05 15:32:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:32:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2025-02-05 15:32:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:41,932 INFO L225 Difference]: With dead ends: 1139 [2025-02-05 15:32:41,932 INFO L226 Difference]: Without dead ends: 676 [2025-02-05 15:32:41,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:32:41,934 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 95 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5197 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:41,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5197 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-02-05 15:32:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 641. [2025-02-05 15:32:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 512 states have (on average 1.642578125) internal successors, (841), 535 states have internal predecessors, (841), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1038 transitions. [2025-02-05 15:32:41,949 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1038 transitions. Word has length 156 [2025-02-05 15:32:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:41,950 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1038 transitions. [2025-02-05 15:32:41,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1038 transitions. [2025-02-05 15:32:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-05 15:32:41,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:41,954 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:41,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:42,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:42,155 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:42,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash -159022353, now seen corresponding path program 1 times [2025-02-05 15:32:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417767249] [2025-02-05 15:32:42,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:42,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:42,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:42,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:42,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417767249] [2025-02-05 15:32:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417767249] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724435667] [2025-02-05 15:32:42,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:42,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:42,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:42,240 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 15:32:42,243 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 15:32:42,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:42,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:42,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:42,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:42,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:32:42,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:42,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724435667] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:42,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:32:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471614761] [2025-02-05 15:32:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:42,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:32:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:42,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:32:42,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:32:42,587 INFO L87 Difference]: Start difference. First operand 641 states and 1038 transitions. Second operand has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:42,702 INFO L93 Difference]: Finished difference Result 1124 states and 1836 transitions. [2025-02-05 15:32:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:32:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2025-02-05 15:32:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:42,706 INFO L225 Difference]: With dead ends: 1124 [2025-02-05 15:32:42,706 INFO L226 Difference]: Without dead ends: 661 [2025-02-05 15:32:42,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:32:42,708 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 113 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:42,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5995 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-02-05 15:32:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 641. [2025-02-05 15:32:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 512 states have (on average 1.642578125) internal successors, (841), 535 states have internal predecessors, (841), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1038 transitions. [2025-02-05 15:32:42,724 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1038 transitions. Word has length 156 [2025-02-05 15:32:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:42,724 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1038 transitions. [2025-02-05 15:32:42,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1038 transitions. [2025-02-05 15:32:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-05 15:32:42,727 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:42,727 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:32:42,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:42,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:42,928 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:42,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash -538793132, now seen corresponding path program 1 times [2025-02-05 15:32:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95861629] [2025-02-05 15:32:42,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:42,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:42,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:42,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:42,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95861629] [2025-02-05 15:32:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95861629] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167669987] [2025-02-05 15:32:42,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:42,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:42,996 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 15:32:42,998 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 15:32:43,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:32:43,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:32:43,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:43,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:43,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:43,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:32:43,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167669987] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:43,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:43,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531255345] [2025-02-05 15:32:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:43,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:43,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:43,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:43,300 INFO L87 Difference]: Start difference. First operand 641 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:43,334 INFO L93 Difference]: Finished difference Result 1176 states and 1921 transitions. [2025-02-05 15:32:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2025-02-05 15:32:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:43,337 INFO L225 Difference]: With dead ends: 1176 [2025-02-05 15:32:43,337 INFO L226 Difference]: Without dead ends: 641 [2025-02-05 15:32:43,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:43,339 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 13 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:43,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2624 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-02-05 15:32:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2025-02-05 15:32:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 512 states have (on average 1.634765625) internal successors, (837), 535 states have internal predecessors, (837), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1034 transitions. [2025-02-05 15:32:43,353 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1034 transitions. Word has length 156 [2025-02-05 15:32:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:43,354 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1034 transitions. [2025-02-05 15:32:43,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1034 transitions. [2025-02-05 15:32:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-05 15:32:43,356 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:43,357 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:43,366 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 15:32:43,557 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,SelfDestructingSolverStorable13 [2025-02-05 15:32:43,557 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:43,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash -595361747, now seen corresponding path program 1 times [2025-02-05 15:32:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:43,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178565745] [2025-02-05 15:32:43,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:43,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:43,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:32:43,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:32:43,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:43,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:43,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178565745] [2025-02-05 15:32:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178565745] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442402182] [2025-02-05 15:32:43,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:43,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:43,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:43,626 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 15:32:43,634 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 15:32:43,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:32:43,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:32:43,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:43,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:43,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:32:43,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:32:43,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442402182] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:32:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806328531] [2025-02-05 15:32:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:43,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:32:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:43,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:32:43,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:32:43,958 INFO L87 Difference]: Start difference. First operand 641 states and 1034 transitions. Second operand has 8 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:44,060 INFO L93 Difference]: Finished difference Result 1124 states and 1833 transitions. [2025-02-05 15:32:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:32:44,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 157 [2025-02-05 15:32:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:44,065 INFO L225 Difference]: With dead ends: 1124 [2025-02-05 15:32:44,065 INFO L226 Difference]: Without dead ends: 661 [2025-02-05 15:32:44,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:32:44,086 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 121 mSDsluCounter, 5087 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:44,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5951 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-02-05 15:32:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 641. [2025-02-05 15:32:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 512 states have (on average 1.634765625) internal successors, (837), 535 states have internal predecessors, (837), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1034 transitions. [2025-02-05 15:32:44,101 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1034 transitions. Word has length 157 [2025-02-05 15:32:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:44,102 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1034 transitions. [2025-02-05 15:32:44,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:44,102 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1034 transitions. [2025-02-05 15:32:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-02-05 15:32:44,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:44,105 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:44,114 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 15:32:44,306 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,SelfDestructingSolverStorable14 [2025-02-05 15:32:44,306 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:44,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1676009906, now seen corresponding path program 1 times [2025-02-05 15:32:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516059072] [2025-02-05 15:32:44,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:44,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:44,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:32:44,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:32:44,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:44,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516059072] [2025-02-05 15:32:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516059072] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561851636] [2025-02-05 15:32:44,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:44,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:44,425 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 15:32:44,427 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 15:32:44,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:32:44,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:32:44,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:44,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:44,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:32:44,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:32:44,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561851636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:44,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:32:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722510150] [2025-02-05 15:32:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:44,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:44,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:44,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:44,738 INFO L87 Difference]: Start difference. First operand 641 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:44,782 INFO L93 Difference]: Finished difference Result 1220 states and 1989 transitions. [2025-02-05 15:32:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:32:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2025-02-05 15:32:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:44,785 INFO L225 Difference]: With dead ends: 1220 [2025-02-05 15:32:44,786 INFO L226 Difference]: Without dead ends: 665 [2025-02-05 15:32:44,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:32:44,787 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 6 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:44,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2597 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-02-05 15:32:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2025-02-05 15:32:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 536 states have (on average 1.6138059701492538) internal successors, (865), 559 states have internal predecessors, (865), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-02-05 15:32:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1062 transitions. [2025-02-05 15:32:44,801 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1062 transitions. Word has length 158 [2025-02-05 15:32:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:44,802 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1062 transitions. [2025-02-05 15:32:44,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1062 transitions. [2025-02-05 15:32:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-02-05 15:32:44,805 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:44,805 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:44,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:45,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:45,006 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:45,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash -977750864, now seen corresponding path program 1 times [2025-02-05 15:32:45,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288750975] [2025-02-05 15:32:45,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:45,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:45,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:32:45,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:32:45,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:45,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:32:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288750975] [2025-02-05 15:32:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288750975] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414126032] [2025-02-05 15:32:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:45,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:45,072 INFO L229 MonitoredProcess]: Starting monitored process 18 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 15:32:45,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 15:32:45,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:32:45,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:32:45,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:45,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:45,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:32:45,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:32:45,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414126032] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:32:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791588772] [2025-02-05 15:32:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:45,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:32:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:45,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:32:45,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:45,450 INFO L87 Difference]: Start difference. First operand 665 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:45,792 INFO L93 Difference]: Finished difference Result 1131 states and 1855 transitions. [2025-02-05 15:32:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:32:45,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2025-02-05 15:32:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:45,795 INFO L225 Difference]: With dead ends: 1131 [2025-02-05 15:32:45,796 INFO L226 Difference]: Without dead ends: 673 [2025-02-05 15:32:45,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:45,797 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 831 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:45,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2232 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:32:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-02-05 15:32:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-02-05 15:32:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 543 states have (on average 1.6151012891344383) internal successors, (877), 566 states have internal predecessors, (877), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (99), 92 states have call predecessors, (99), 94 states have call successors, (99) [2025-02-05 15:32:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1075 transitions. [2025-02-05 15:32:45,811 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1075 transitions. Word has length 158 [2025-02-05 15:32:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:45,811 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1075 transitions. [2025-02-05 15:32:45,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1075 transitions. [2025-02-05 15:32:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-05 15:32:45,813 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:45,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:45,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:46,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 15:32:46,015 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:46,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1243544122, now seen corresponding path program 1 times [2025-02-05 15:32:46,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261131319] [2025-02-05 15:32:46,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:46,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:46,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:32:46,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:32:46,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:46,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:32:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261131319] [2025-02-05 15:32:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261131319] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132803864] [2025-02-05 15:32:46,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:46,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:46,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:46,076 INFO L229 MonitoredProcess]: Starting monitored process 19 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 15:32:46,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 15:32:46,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:32:46,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:32:46,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:46,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:46,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:32:46,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:32:46,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132803864] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:46,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:46,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:32:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155591896] [2025-02-05 15:32:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:46,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:32:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:46,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:32:46,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:46,441 INFO L87 Difference]: Start difference. First operand 673 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:46,791 INFO L93 Difference]: Finished difference Result 1147 states and 1878 transitions. [2025-02-05 15:32:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:32:46,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2025-02-05 15:32:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:46,796 INFO L225 Difference]: With dead ends: 1147 [2025-02-05 15:32:46,796 INFO L226 Difference]: Without dead ends: 681 [2025-02-05 15:32:46,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:46,798 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 832 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:46,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 2229 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:32:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-02-05 15:32:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2025-02-05 15:32:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 550 states have (on average 1.6163636363636364) internal successors, (889), 573 states have internal predecessors, (889), 99 states have call successors, (99), 28 states have call predecessors, (99), 31 states have return successors, (100), 92 states have call predecessors, (100), 94 states have call successors, (100) [2025-02-05 15:32:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1088 transitions. [2025-02-05 15:32:46,811 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1088 transitions. Word has length 160 [2025-02-05 15:32:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:46,812 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1088 transitions. [2025-02-05 15:32:46,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1088 transitions. [2025-02-05 15:32:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-05 15:32:46,814 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:46,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:46,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:47,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 15:32:47,015 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:47,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -322927792, now seen corresponding path program 1 times [2025-02-05 15:32:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:47,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610769550] [2025-02-05 15:32:47,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:47,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:32:47,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:32:47,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:47,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 15:32:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610769550] [2025-02-05 15:32:47,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610769550] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905987437] [2025-02-05 15:32:47,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:47,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:47,072 INFO L229 MonitoredProcess]: Starting monitored process 20 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 15:32:47,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 15:32:47,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:32:47,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:32:47,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:47,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:47,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:32:47,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:32:47,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905987437] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:47,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:32:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465640144] [2025-02-05 15:32:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:47,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:32:47,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:47,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:32:47,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:47,444 INFO L87 Difference]: Start difference. First operand 681 states and 1088 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:47,770 INFO L93 Difference]: Finished difference Result 1163 states and 1901 transitions. [2025-02-05 15:32:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:32:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2025-02-05 15:32:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:47,774 INFO L225 Difference]: With dead ends: 1163 [2025-02-05 15:32:47,774 INFO L226 Difference]: Without dead ends: 689 [2025-02-05 15:32:47,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:47,776 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 826 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:47,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2226 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:32:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2025-02-05 15:32:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2025-02-05 15:32:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 557 states have (on average 1.6175942549371634) internal successors, (901), 580 states have internal predecessors, (901), 99 states have call successors, (99), 29 states have call predecessors, (99), 32 states have return successors, (101), 92 states have call predecessors, (101), 94 states have call successors, (101) [2025-02-05 15:32:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1101 transitions. [2025-02-05 15:32:47,811 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1101 transitions. Word has length 162 [2025-02-05 15:32:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:47,812 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1101 transitions. [2025-02-05 15:32:47,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1101 transitions. [2025-02-05 15:32:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 15:32:47,815 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:47,815 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:47,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 15:32:48,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:48,019 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:48,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -607459456, now seen corresponding path program 1 times [2025-02-05 15:32:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687432302] [2025-02-05 15:32:48,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:48,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 15:32:48,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 15:32:48,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:48,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:32:48,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:48,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687432302] [2025-02-05 15:32:48,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687432302] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:48,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939767042] [2025-02-05 15:32:48,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:48,089 INFO L229 MonitoredProcess]: Starting monitored process 21 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 15:32:48,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 15:32:48,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 15:32:48,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 15:32:48,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:48,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:48,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:32:48,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:32:48,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939767042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:32:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132785969] [2025-02-05 15:32:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:48,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:32:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:48,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:32:48,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:48,492 INFO L87 Difference]: Start difference. First operand 689 states and 1101 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:48,834 INFO L93 Difference]: Finished difference Result 1179 states and 1924 transitions. [2025-02-05 15:32:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:32:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2025-02-05 15:32:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:48,838 INFO L225 Difference]: With dead ends: 1179 [2025-02-05 15:32:48,838 INFO L226 Difference]: Without dead ends: 697 [2025-02-05 15:32:48,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:48,841 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 820 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:48,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2223 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:32:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-02-05 15:32:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2025-02-05 15:32:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 564 states have (on average 1.6187943262411348) internal successors, (913), 587 states have internal predecessors, (913), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2025-02-05 15:32:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1114 transitions. [2025-02-05 15:32:48,867 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1114 transitions. Word has length 164 [2025-02-05 15:32:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:48,867 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1114 transitions. [2025-02-05 15:32:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1114 transitions. [2025-02-05 15:32:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 15:32:48,869 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:48,869 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:48,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 15:32:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:49,070 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:49,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 620368944, now seen corresponding path program 1 times [2025-02-05 15:32:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344130621] [2025-02-05 15:32:49,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:49,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 15:32:49,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 15:32:49,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:49,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344130621] [2025-02-05 15:32:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344130621] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17899902] [2025-02-05 15:32:49,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:49,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:49,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:49,152 INFO L229 MonitoredProcess]: Starting monitored process 22 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 15:32:49,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 15:32:49,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 15:32:49,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 15:32:49,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:49,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:49,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:32:49,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:32:49,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17899902] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:49,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-05 15:32:49,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217596836] [2025-02-05 15:32:49,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:49,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:49,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:49,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:32:49,446 INFO L87 Difference]: Start difference. First operand 697 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:49,482 INFO L93 Difference]: Finished difference Result 1368 states and 2198 transitions. [2025-02-05 15:32:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2025-02-05 15:32:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:49,486 INFO L225 Difference]: With dead ends: 1368 [2025-02-05 15:32:49,486 INFO L226 Difference]: Without dead ends: 666 [2025-02-05 15:32:49,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:32:49,489 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 7 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:49,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2627 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-02-05 15:32:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2025-02-05 15:32:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 536 states have (on average 1.617537313432836) internal successors, (867), 557 states have internal predecessors, (867), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-02-05 15:32:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1064 transitions. [2025-02-05 15:32:49,505 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1064 transitions. Word has length 166 [2025-02-05 15:32:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:49,505 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1064 transitions. [2025-02-05 15:32:49,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1064 transitions. [2025-02-05 15:32:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 15:32:49,508 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:49,508 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:49,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-05 15:32:49,710 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:49,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1914762441, now seen corresponding path program 1 times [2025-02-05 15:32:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:49,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669805835] [2025-02-05 15:32:49,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:49,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:32:49,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:32:49,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:49,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 15:32:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669805835] [2025-02-05 15:32:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669805835] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327925914] [2025-02-05 15:32:49,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:49,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:49,798 INFO L229 MonitoredProcess]: Starting monitored process 23 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 15:32:49,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-05 15:32:49,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:32:50,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:32:50,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:50,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:50,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 15:32:50,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:32:50,147 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327925914] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-02-05 15:32:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641204754] [2025-02-05 15:32:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:50,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:32:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:50,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:32:50,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:50,149 INFO L87 Difference]: Start difference. First operand 666 states and 1064 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:50,210 INFO L93 Difference]: Finished difference Result 1301 states and 2092 transitions. [2025-02-05 15:32:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:32:50,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2025-02-05 15:32:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:50,217 INFO L225 Difference]: With dead ends: 1301 [2025-02-05 15:32:50,217 INFO L226 Difference]: Without dead ends: 666 [2025-02-05 15:32:50,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 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 15:32:50,222 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 119 mSDsluCounter, 4354 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:50,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5250 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-02-05 15:32:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2025-02-05 15:32:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 515 states have (on average 1.6174757281553398) internal successors, (833), 536 states have internal predecessors, (833), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-02-05 15:32:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1030 transitions. [2025-02-05 15:32:50,243 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1030 transitions. Word has length 168 [2025-02-05 15:32:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:50,243 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1030 transitions. [2025-02-05 15:32:50,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1030 transitions. [2025-02-05 15:32:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 15:32:50,246 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:50,246 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:50,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-05 15:32:50,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-05 15:32:50,447 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:50,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1603529643, now seen corresponding path program 1 times [2025-02-05 15:32:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:50,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419261142] [2025-02-05 15:32:50,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:50,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:50,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:32:50,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:32:50,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:50,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:32:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419261142] [2025-02-05 15:32:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419261142] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434992088] [2025-02-05 15:32:50,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:50,553 INFO L229 MonitoredProcess]: Starting monitored process 24 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 15:32:50,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-05 15:32:50,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:32:50,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:32:50,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:50,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:50,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:32:50,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:32:50,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434992088] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:50,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 15:32:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858643605] [2025-02-05 15:32:50,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:50,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:50,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:50,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:50,880 INFO L87 Difference]: Start difference. First operand 645 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:50,955 INFO L93 Difference]: Finished difference Result 1283 states and 2062 transitions. [2025-02-05 15:32:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-02-05 15:32:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:50,959 INFO L225 Difference]: With dead ends: 1283 [2025-02-05 15:32:50,959 INFO L226 Difference]: Without dead ends: 669 [2025-02-05 15:32:50,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:32:50,960 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 128 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:50,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2506 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-02-05 15:32:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 645. [2025-02-05 15:32:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 515 states have (on average 1.6155339805825242) internal successors, (832), 536 states have internal predecessors, (832), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-02-05 15:32:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1029 transitions. [2025-02-05 15:32:50,973 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1029 transitions. Word has length 170 [2025-02-05 15:32:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:50,973 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1029 transitions. [2025-02-05 15:32:50,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1029 transitions. [2025-02-05 15:32:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-02-05 15:32:50,975 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:50,975 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:50,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-05 15:32:51,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-05 15:32:51,176 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:51,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 606511098, now seen corresponding path program 1 times [2025-02-05 15:32:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36646977] [2025-02-05 15:32:51,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:51,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-05 15:32:51,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-05 15:32:51,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:51,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36646977] [2025-02-05 15:32:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36646977] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:51,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:32:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:32:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12013792] [2025-02-05 15:32:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:51,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:51,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:51,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:32:51,247 INFO L87 Difference]: Start difference. First operand 645 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:51,273 INFO L93 Difference]: Finished difference Result 1218 states and 1971 transitions. [2025-02-05 15:32:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:32:51,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2025-02-05 15:32:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:51,276 INFO L225 Difference]: With dead ends: 1218 [2025-02-05 15:32:51,276 INFO L226 Difference]: Without dead ends: 605 [2025-02-05 15:32:51,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:32:51,277 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 8 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:51,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2624 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2025-02-05 15:32:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2025-02-05 15:32:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 478 states have (on average 1.608786610878661) internal successors, (769), 497 states have internal predecessors, (769), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-02-05 15:32:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 962 transitions. [2025-02-05 15:32:51,287 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 962 transitions. Word has length 171 [2025-02-05 15:32:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:51,288 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 962 transitions. [2025-02-05 15:32:51,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:32:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 962 transitions. [2025-02-05 15:32:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-05 15:32:51,291 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:51,291 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:51,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-05 15:32:51,291 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:51,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 150225694, now seen corresponding path program 1 times [2025-02-05 15:32:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671004960] [2025-02-05 15:32:51,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:51,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-05 15:32:51,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-05 15:32:51,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:51,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 15:32:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671004960] [2025-02-05 15:32:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671004960] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:32:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:32:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318975410] [2025-02-05 15:32:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:51,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:32:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:51,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:32:51,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:32:51,387 INFO L87 Difference]: Start difference. First operand 605 states and 962 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:51,434 INFO L93 Difference]: Finished difference Result 1121 states and 1810 transitions. [2025-02-05 15:32:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:32:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2025-02-05 15:32:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:51,437 INFO L225 Difference]: With dead ends: 1121 [2025-02-05 15:32:51,437 INFO L226 Difference]: Without dead ends: 591 [2025-02-05 15:32:51,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 15:32:51,439 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 88 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5076 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:51,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5076 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2025-02-05 15:32:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2025-02-05 15:32:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 464 states have (on average 1.603448275862069) internal successors, (744), 483 states have internal predecessors, (744), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-02-05 15:32:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 937 transitions. [2025-02-05 15:32:51,450 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 937 transitions. Word has length 172 [2025-02-05 15:32:51,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:51,450 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 937 transitions. [2025-02-05 15:32:51,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 937 transitions. [2025-02-05 15:32:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-05 15:32:51,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:51,452 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:51,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-05 15:32:51,452 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:51,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1862681245, now seen corresponding path program 1 times [2025-02-05 15:32:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959579004] [2025-02-05 15:32:51,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:51,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-05 15:32:51,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-05 15:32:51,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:51,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:32:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959579004] [2025-02-05 15:32:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959579004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:51,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:32:51,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-05 15:32:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754291082] [2025-02-05 15:32:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:51,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:32:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:51,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:32:51,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:32:51,618 INFO L87 Difference]: Start difference. First operand 591 states and 937 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:51,727 INFO L93 Difference]: Finished difference Result 1148 states and 1838 transitions. [2025-02-05 15:32:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:32:51,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2025-02-05 15:32:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:51,730 INFO L225 Difference]: With dead ends: 1148 [2025-02-05 15:32:51,730 INFO L226 Difference]: Without dead ends: 582 [2025-02-05 15:32:51,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:32:51,732 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 45 mSDsluCounter, 6505 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7324 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:51,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7324 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:32:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2025-02-05 15:32:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2025-02-05 15:32:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 455 states have (on average 1.6021978021978023) internal successors, (729), 474 states have internal predecessors, (729), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-02-05 15:32:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 922 transitions. [2025-02-05 15:32:51,741 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 922 transitions. Word has length 173 [2025-02-05 15:32:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:51,742 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 922 transitions. [2025-02-05 15:32:51,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 922 transitions. [2025-02-05 15:32:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-05 15:32:51,743 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:51,743 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:51,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-05 15:32:51,744 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:51,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash 325830682, now seen corresponding path program 1 times [2025-02-05 15:32:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882706284] [2025-02-05 15:32:51,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:51,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 15:32:51,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 15:32:51,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:51,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 15:32:51,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882706284] [2025-02-05 15:32:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882706284] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131011444] [2025-02-05 15:32:51,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:51,821 INFO L229 MonitoredProcess]: Starting monitored process 25 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 15:32:51,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-05 15:32:51,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 15:32:52,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 15:32:52,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:52,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:52,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:32:52,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:32:52,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131011444] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:52,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 15:32:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212545841] [2025-02-05 15:32:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:32:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:52,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:32:52,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:52,199 INFO L87 Difference]: Start difference. First operand 582 states and 922 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:52,551 INFO L93 Difference]: Finished difference Result 1074 states and 1759 transitions. [2025-02-05 15:32:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:32:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2025-02-05 15:32:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:52,555 INFO L225 Difference]: With dead ends: 1074 [2025-02-05 15:32:52,555 INFO L226 Difference]: Without dead ends: 584 [2025-02-05 15:32:52,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:32:52,556 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 748 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:52,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 2100 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:32:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-02-05 15:32:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2025-02-05 15:32:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 456 states have (on average 1.5921052631578947) internal successors, (726), 476 states have internal predecessors, (726), 97 states have call successors, (97), 30 states have call predecessors, (97), 30 states have return successors, (97), 90 states have call predecessors, (97), 92 states have call successors, (97) [2025-02-05 15:32:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 920 transitions. [2025-02-05 15:32:52,567 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 920 transitions. Word has length 174 [2025-02-05 15:32:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:52,567 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 920 transitions. [2025-02-05 15:32:52,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:32:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 920 transitions. [2025-02-05 15:32:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-05 15:32:52,569 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:52,569 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:52,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:52,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-05 15:32:52,770 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:52,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 600214618, now seen corresponding path program 1 times [2025-02-05 15:32:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989070034] [2025-02-05 15:32:52,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:52,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 15:32:52,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 15:32:52,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:52,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 15:32:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989070034] [2025-02-05 15:32:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989070034] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107502107] [2025-02-05 15:32:52,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:52,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:52,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:52,998 INFO L229 MonitoredProcess]: Starting monitored process 26 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 15:32:52,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-05 15:32:53,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 15:32:53,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 15:32:53,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:53,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:53,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 15:32:53,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 15:32:53,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107502107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:53,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-02-05 15:32:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714464455] [2025-02-05 15:32:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:53,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:32:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:53,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:32:53,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:32:53,433 INFO L87 Difference]: Start difference. First operand 584 states and 920 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-05 15:32:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:55,939 INFO L93 Difference]: Finished difference Result 1904 states and 3104 transitions. [2025-02-05 15:32:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 15:32:55,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 174 [2025-02-05 15:32:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:55,946 INFO L225 Difference]: With dead ends: 1904 [2025-02-05 15:32:55,946 INFO L226 Difference]: Without dead ends: 1410 [2025-02-05 15:32:55,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-02-05 15:32:55,948 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 2279 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 4604 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:55,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 2744 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4604 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-05 15:32:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2025-02-05 15:32:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1296. [2025-02-05 15:32:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1013 states have (on average 1.6288252714708786) internal successors, (1650), 1054 states have internal predecessors, (1650), 213 states have call successors, (213), 62 states have call predecessors, (213), 69 states have return successors, (234), 205 states have call predecessors, (234), 208 states have call successors, (234) [2025-02-05 15:32:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 2097 transitions. [2025-02-05 15:32:55,988 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 2097 transitions. Word has length 174 [2025-02-05 15:32:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:55,988 INFO L471 AbstractCegarLoop]: Abstraction has 1296 states and 2097 transitions. [2025-02-05 15:32:55,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-05 15:32:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 2097 transitions. [2025-02-05 15:32:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-05 15:32:55,990 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:55,990 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:55,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:56,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 15:32:56,191 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:56,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash -201411840, now seen corresponding path program 1 times [2025-02-05 15:32:56,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:56,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053140971] [2025-02-05 15:32:56,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:56,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:56,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-05 15:32:56,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-05 15:32:56,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:56,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:32:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053140971] [2025-02-05 15:32:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053140971] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128415746] [2025-02-05 15:32:56,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:56,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:56,428 INFO L229 MonitoredProcess]: Starting monitored process 27 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 15:32:56,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-05 15:32:56,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-05 15:32:56,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-05 15:32:56,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:56,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:56,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 15:32:56,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:32:56,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128415746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:56,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-02-05 15:32:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792036922] [2025-02-05 15:32:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:56,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:32:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:56,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:32:56,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:32:56,931 INFO L87 Difference]: Start difference. First operand 1296 states and 2097 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-02-05 15:32:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:58,556 INFO L93 Difference]: Finished difference Result 2758 states and 4509 transitions. [2025-02-05 15:32:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 15:32:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2025-02-05 15:32:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:58,563 INFO L225 Difference]: With dead ends: 2758 [2025-02-05 15:32:58,563 INFO L226 Difference]: Without dead ends: 1554 [2025-02-05 15:32:58,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:32:58,568 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 2029 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:58,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 2022 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 15:32:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2025-02-05 15:32:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1367. [2025-02-05 15:32:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1065 states have (on average 1.6169014084507043) internal successors, (1722), 1112 states have internal predecessors, (1722), 221 states have call successors, (221), 67 states have call predecessors, (221), 80 states have return successors, (260), 213 states have call predecessors, (260), 216 states have call successors, (260) [2025-02-05 15:32:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2203 transitions. [2025-02-05 15:32:58,618 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2203 transitions. Word has length 176 [2025-02-05 15:32:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:58,619 INFO L471 AbstractCegarLoop]: Abstraction has 1367 states and 2203 transitions. [2025-02-05 15:32:58,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-02-05 15:32:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2203 transitions. [2025-02-05 15:32:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-02-05 15:32:58,621 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:58,621 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:58,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-05 15:32:58,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-05 15:32:58,822 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:58,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -67337087, now seen corresponding path program 1 times [2025-02-05 15:32:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891713361] [2025-02-05 15:32:58,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:58,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-02-05 15:32:58,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-02-05 15:32:58,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:58,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:32:59,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891713361] [2025-02-05 15:32:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891713361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189286578] [2025-02-05 15:32:59,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:59,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:59,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:59,055 INFO L229 MonitoredProcess]: Starting monitored process 28 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 15:32:59,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-05 15:32:59,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-02-05 15:32:59,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-02-05 15:32:59,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:59,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:59,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:32:59,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:32:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:32:59,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:32:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189286578] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:59,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:32:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-02-05 15:32:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807671603] [2025-02-05 15:32:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:59,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:32:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:59,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:32:59,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:59,398 INFO L87 Difference]: Start difference. First operand 1367 states and 2203 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-02-05 15:32:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:59,458 INFO L93 Difference]: Finished difference Result 3319 states and 5440 transitions. [2025-02-05 15:32:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:32:59,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2025-02-05 15:32:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:59,471 INFO L225 Difference]: With dead ends: 3319 [2025-02-05 15:32:59,471 INFO L226 Difference]: Without dead ends: 2045 [2025-02-05 15:32:59,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:32:59,476 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 753 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:32:59,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 2303 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2025-02-05 15:32:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1363. [2025-02-05 15:32:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.6161806208842897) internal successors, (1718), 1108 states have internal predecessors, (1718), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (251), 213 states have call predecessors, (251), 216 states have call successors, (251) [2025-02-05 15:32:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2190 transitions. [2025-02-05 15:32:59,517 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2190 transitions. Word has length 181 [2025-02-05 15:32:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:59,517 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 2190 transitions. [2025-02-05 15:32:59,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-02-05 15:32:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2190 transitions. [2025-02-05 15:32:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-02-05 15:32:59,519 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:59,519 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:59,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-05 15:32:59,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:59,723 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:59,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash -516033726, now seen corresponding path program 1 times [2025-02-05 15:32:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993897770] [2025-02-05 15:32:59,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:59,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-02-05 15:32:59,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-02-05 15:32:59,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:59,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:32:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993897770] [2025-02-05 15:32:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993897770] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:32:59,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809854527] [2025-02-05 15:32:59,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:59,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:59,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:32:59,961 INFO L229 MonitoredProcess]: Starting monitored process 29 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 15:32:59,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-05 15:33:00,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-02-05 15:33:00,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-02-05 15:33:00,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:00,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:00,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 15:33:00,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:33:00,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809854527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:00,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:33:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058626659] [2025-02-05 15:33:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:00,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:00,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:00,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:00,361 INFO L87 Difference]: Start difference. First operand 1363 states and 2190 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:33:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:01,383 INFO L93 Difference]: Finished difference Result 3967 states and 6464 transitions. [2025-02-05 15:33:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-02-05 15:33:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:01,399 INFO L225 Difference]: With dead ends: 3967 [2025-02-05 15:33:01,399 INFO L226 Difference]: Without dead ends: 2696 [2025-02-05 15:33:01,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 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 15:33:01,407 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 1833 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:01,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 551 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 15:33:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2025-02-05 15:33:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2694. [2025-02-05 15:33:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2096 states have (on average 1.6211832061068703) internal successors, (3398), 2185 states have internal predecessors, (3398), 440 states have call successors, (440), 127 states have call predecessors, (440), 157 states have return successors, (526), 433 states have call predecessors, (526), 435 states have call successors, (526) [2025-02-05 15:33:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 4364 transitions. [2025-02-05 15:33:01,549 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 4364 transitions. Word has length 181 [2025-02-05 15:33:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:01,550 INFO L471 AbstractCegarLoop]: Abstraction has 2694 states and 4364 transitions. [2025-02-05 15:33:01,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:33:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 4364 transitions. [2025-02-05 15:33:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-02-05 15:33:01,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:01,553 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:01,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-05 15:33:01,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:01,758 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:01,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -780934431, now seen corresponding path program 1 times [2025-02-05 15:33:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:01,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125716899] [2025-02-05 15:33:01,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:01,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-02-05 15:33:01,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-02-05 15:33:01,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:01,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 15:33:01,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:01,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125716899] [2025-02-05 15:33:01,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125716899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:01,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:33:01,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-05 15:33:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299782286] [2025-02-05 15:33:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:01,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:33:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:01,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:33:01,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:01,930 INFO L87 Difference]: Start difference. First operand 2694 states and 4364 transitions. Second operand has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:33:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:02,054 INFO L93 Difference]: Finished difference Result 3949 states and 6411 transitions. [2025-02-05 15:33:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:33:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-02-05 15:33:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:02,064 INFO L225 Difference]: With dead ends: 3949 [2025-02-05 15:33:02,065 INFO L226 Difference]: Without dead ends: 1341 [2025-02-05 15:33:02,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:02,074 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 31 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:02,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6516 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2025-02-05 15:33:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2025-02-05 15:33:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1047 states have (on average 1.6141356255969437) internal successors, (1690), 1091 states have internal predecessors, (1690), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (246), 208 states have call predecessors, (246), 211 states have call successors, (246) [2025-02-05 15:33:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2151 transitions. [2025-02-05 15:33:02,153 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2151 transitions. Word has length 181 [2025-02-05 15:33:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:02,154 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2151 transitions. [2025-02-05 15:33:02,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:33:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2151 transitions. [2025-02-05 15:33:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-05 15:33:02,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:02,157 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:02,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-05 15:33:02,157 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1182641052, now seen corresponding path program 1 times [2025-02-05 15:33:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:02,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972349662] [2025-02-05 15:33:02,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:02,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-05 15:33:02,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 15:33:02,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:02,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:33:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972349662] [2025-02-05 15:33:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972349662] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135451639] [2025-02-05 15:33:02,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:02,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:02,432 INFO L229 MonitoredProcess]: Starting monitored process 30 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 15:33:02,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-05 15:33:02,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-05 15:33:02,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 15:33:02,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:02,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:02,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:33:02,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:33:02,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135451639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:02,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:02,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-02-05 15:33:02,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984077007] [2025-02-05 15:33:02,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:02,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:33:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:02,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:33:02,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:33:02,773 INFO L87 Difference]: Start difference. First operand 1341 states and 2151 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-02-05 15:33:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:02,818 INFO L93 Difference]: Finished difference Result 1361 states and 2175 transitions. [2025-02-05 15:33:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:02,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2025-02-05 15:33:02,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:02,826 INFO L225 Difference]: With dead ends: 1361 [2025-02-05 15:33:02,827 INFO L226 Difference]: Without dead ends: 1347 [2025-02-05 15:33:02,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:33:02,828 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 0 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:02,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3317 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2025-02-05 15:33:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1347. [2025-02-05 15:33:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1053 states have (on average 1.610636277302944) internal successors, (1696), 1097 states have internal predecessors, (1696), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (246), 208 states have call predecessors, (246), 211 states have call successors, (246) [2025-02-05 15:33:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2157 transitions. [2025-02-05 15:33:02,930 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2157 transitions. Word has length 182 [2025-02-05 15:33:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:02,931 INFO L471 AbstractCegarLoop]: Abstraction has 1347 states and 2157 transitions. [2025-02-05 15:33:02,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-02-05 15:33:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2157 transitions. [2025-02-05 15:33:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-02-05 15:33:02,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:02,934 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 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] [2025-02-05 15:33:02,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-05 15:33:03,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:03,135 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:03,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2044321915, now seen corresponding path program 1 times [2025-02-05 15:33:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570394836] [2025-02-05 15:33:03,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:03,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-02-05 15:33:03,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-02-05 15:33:03,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:03,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-05 15:33:03,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570394836] [2025-02-05 15:33:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570394836] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797628907] [2025-02-05 15:33:03,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:03,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:03,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:03,462 INFO L229 MonitoredProcess]: Starting monitored process 31 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 15:33:03,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-05 15:33:03,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-02-05 15:33:03,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-02-05 15:33:03,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:03,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:03,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 15:33:03,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-02-05 15:33:03,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:33:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-02-05 15:33:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797628907] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:33:04,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:33:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2025-02-05 15:33:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119093401] [2025-02-05 15:33:04,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:33:04,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 15:33:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:04,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 15:33:04,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-02-05 15:33:04,459 INFO L87 Difference]: Start difference. First operand 1347 states and 2157 transitions. Second operand has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2025-02-05 15:33:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:16,770 INFO L93 Difference]: Finished difference Result 7825 states and 12873 transitions. [2025-02-05 15:33:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-02-05 15:33:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) Word has length 225 [2025-02-05 15:33:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:16,847 INFO L225 Difference]: With dead ends: 7825 [2025-02-05 15:33:16,851 INFO L226 Difference]: Without dead ends: 6544 [2025-02-05 15:33:16,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 457 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=869, Invalid=6271, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 15:33:16,868 INFO L435 NwaCegarLoop]: 1730 mSDtfsCounter, 14787 mSDsluCounter, 15395 mSDsCounter, 0 mSdLazyCounter, 28744 mSolverCounterSat, 5712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14787 SdHoareTripleChecker+Valid, 17125 SdHoareTripleChecker+Invalid, 34456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5712 IncrementalHoareTripleChecker+Valid, 28744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:16,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14787 Valid, 17125 Invalid, 34456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5712 Valid, 28744 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2025-02-05 15:33:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2025-02-05 15:33:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6434. [2025-02-05 15:33:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 4839 states have (on average 1.5922711303988428) internal successors, (7705), 5081 states have internal predecessors, (7705), 1228 states have call successors, (1228), 259 states have call predecessors, (1228), 366 states have return successors, (1627), 1245 states have call predecessors, (1627), 1224 states have call successors, (1627) [2025-02-05 15:33:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 10560 transitions. [2025-02-05 15:33:17,303 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 10560 transitions. Word has length 225 [2025-02-05 15:33:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:17,304 INFO L471 AbstractCegarLoop]: Abstraction has 6434 states and 10560 transitions. [2025-02-05 15:33:17,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2025-02-05 15:33:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 10560 transitions. [2025-02-05 15:33:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2025-02-05 15:33:17,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:17,319 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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] [2025-02-05 15:33:17,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-05 15:33:17,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-05 15:33:17,520 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:17,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1823122925, now seen corresponding path program 1 times [2025-02-05 15:33:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365535628] [2025-02-05 15:33:17,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:17,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-02-05 15:33:17,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-02-05 15:33:17,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:17,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-02-05 15:33:17,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:17,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365535628] [2025-02-05 15:33:17,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365535628] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:17,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243231966] [2025-02-05 15:33:17,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:17,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:17,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:17,777 INFO L229 MonitoredProcess]: Starting monitored process 32 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 15:33:17,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-05 15:33:17,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-02-05 15:33:18,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-02-05 15:33:18,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:18,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:18,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:33:18,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-05 15:33:18,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243231966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:18,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-02-05 15:33:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308918304] [2025-02-05 15:33:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:18,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:33:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:18,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:33:18,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:33:18,130 INFO L87 Difference]: Start difference. First operand 6434 states and 10560 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:33:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:18,436 INFO L93 Difference]: Finished difference Result 9436 states and 15522 transitions. [2025-02-05 15:33:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:33:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 232 [2025-02-05 15:33:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:18,465 INFO L225 Difference]: With dead ends: 9436 [2025-02-05 15:33:18,465 INFO L226 Difference]: Without dead ends: 6462 [2025-02-05 15:33:18,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:33:18,478 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 0 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:18,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4162 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2025-02-05 15:33:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 6454. [2025-02-05 15:33:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6454 states, 4855 states have (on average 1.5903192584963954) internal successors, (7721), 5097 states have internal predecessors, (7721), 1228 states have call successors, (1228), 259 states have call predecessors, (1228), 370 states have return successors, (1631), 1249 states have call predecessors, (1631), 1224 states have call successors, (1631) [2025-02-05 15:33:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6454 states to 6454 states and 10580 transitions. [2025-02-05 15:33:18,906 INFO L78 Accepts]: Start accepts. Automaton has 6454 states and 10580 transitions. Word has length 232 [2025-02-05 15:33:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:18,906 INFO L471 AbstractCegarLoop]: Abstraction has 6454 states and 10580 transitions. [2025-02-05 15:33:18,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:33:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6454 states and 10580 transitions. [2025-02-05 15:33:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-02-05 15:33:18,918 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:18,918 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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] [2025-02-05 15:33:18,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-05 15:33:19,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-05 15:33:19,123 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:19,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1390257059, now seen corresponding path program 1 times [2025-02-05 15:33:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593267615] [2025-02-05 15:33:19,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:19,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-02-05 15:33:19,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-02-05 15:33:19,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:19,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-02-05 15:33:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593267615] [2025-02-05 15:33:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593267615] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:19,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:33:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 15:33:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267964751] [2025-02-05 15:33:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:19,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:33:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:19,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:33:19,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:33:19,249 INFO L87 Difference]: Start difference. First operand 6454 states and 10580 transitions. Second operand has 8 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-02-05 15:33:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:19,480 INFO L93 Difference]: Finished difference Result 10820 states and 17719 transitions. [2025-02-05 15:33:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:33:19,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 237 [2025-02-05 15:33:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:19,499 INFO L225 Difference]: With dead ends: 10820 [2025-02-05 15:33:19,499 INFO L226 Difference]: Without dead ends: 4470 [2025-02-05 15:33:19,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:19,516 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 41 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5695 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:19,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5695 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2025-02-05 15:33:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4470. [2025-02-05 15:33:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3408 states have (on average 1.5956572769953052) internal successors, (5438), 3579 states have internal predecessors, (5438), 787 states have call successors, (787), 196 states have call predecessors, (787), 274 states have return successors, (1031), 792 states have call predecessors, (1031), 783 states have call successors, (1031) [2025-02-05 15:33:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 7256 transitions. [2025-02-05 15:33:19,679 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 7256 transitions. Word has length 237 [2025-02-05 15:33:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:19,679 INFO L471 AbstractCegarLoop]: Abstraction has 4470 states and 7256 transitions. [2025-02-05 15:33:19,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-02-05 15:33:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 7256 transitions. [2025-02-05 15:33:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2025-02-05 15:33:19,687 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:19,687 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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] [2025-02-05 15:33:19,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-02-05 15:33:19,687 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:19,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 635282240, now seen corresponding path program 1 times [2025-02-05 15:33:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563316487] [2025-02-05 15:33:19,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:19,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 235 statements into 1 equivalence classes. [2025-02-05 15:33:19,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 235 of 235 statements. [2025-02-05 15:33:19,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:19,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-02-05 15:33:19,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:19,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563316487] [2025-02-05 15:33:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563316487] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598960205] [2025-02-05 15:33:19,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:19,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:19,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:19,982 INFO L229 MonitoredProcess]: Starting monitored process 33 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 15:33:19,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-05 15:33:20,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 235 statements into 1 equivalence classes. [2025-02-05 15:33:20,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 235 of 235 statements. [2025-02-05 15:33:20,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:20,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:20,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:20,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-05 15:33:20,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598960205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:20,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:20,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2025-02-05 15:33:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729334069] [2025-02-05 15:33:20,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:20,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:20,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:20,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:33:20,346 INFO L87 Difference]: Start difference. First operand 4470 states and 7256 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:20,572 INFO L93 Difference]: Finished difference Result 8859 states and 14516 transitions. [2025-02-05 15:33:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:20,576 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 235 [2025-02-05 15:33:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:20,600 INFO L225 Difference]: With dead ends: 8859 [2025-02-05 15:33:20,600 INFO L226 Difference]: Without dead ends: 4520 [2025-02-05 15:33:20,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-02-05 15:33:20,617 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 10 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:20,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2414 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2025-02-05 15:33:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4511. [2025-02-05 15:33:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 3451 states have (on average 1.570849029266879) internal successors, (5421), 3611 states have internal predecessors, (5421), 787 states have call successors, (787), 205 states have call predecessors, (787), 272 states have return successors, (1025), 792 states have call predecessors, (1025), 783 states have call successors, (1025) [2025-02-05 15:33:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 7233 transitions. [2025-02-05 15:33:20,901 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 7233 transitions. Word has length 235 [2025-02-05 15:33:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:20,901 INFO L471 AbstractCegarLoop]: Abstraction has 4511 states and 7233 transitions. [2025-02-05 15:33:20,901 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 7233 transitions. [2025-02-05 15:33:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-02-05 15:33:20,910 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:20,910 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2025-02-05 15:33:20,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-05 15:33:21,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-05 15:33:21,111 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:21,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 847395144, now seen corresponding path program 1 times [2025-02-05 15:33:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708385112] [2025-02-05 15:33:21,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:21,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-02-05 15:33:21,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-02-05 15:33:21,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:21,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-02-05 15:33:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708385112] [2025-02-05 15:33:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708385112] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584746723] [2025-02-05 15:33:21,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:21,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:21,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:21,327 INFO L229 MonitoredProcess]: Starting monitored process 34 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 15:33:21,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-05 15:33:21,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-02-05 15:33:21,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-02-05 15:33:21,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:21,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:21,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:33:21,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2025-02-05 15:33:21,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:21,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584746723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:21,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:21,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-02-05 15:33:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337787371] [2025-02-05 15:33:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:21,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:21,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:21,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:21,726 INFO L87 Difference]: Start difference. First operand 4511 states and 7233 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:21,898 INFO L93 Difference]: Finished difference Result 5847 states and 9359 transitions. [2025-02-05 15:33:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:33:21,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2025-02-05 15:33:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:21,915 INFO L225 Difference]: With dead ends: 5847 [2025-02-05 15:33:21,915 INFO L226 Difference]: Without dead ends: 2941 [2025-02-05 15:33:21,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:21,924 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 1 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:21,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2439 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2025-02-05 15:33:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2941. [2025-02-05 15:33:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2262 states have (on average 1.5698496905393458) internal successors, (3551), 2367 states have internal predecessors, (3551), 497 states have call successors, (497), 136 states have call predecessors, (497), 181 states have return successors, (647), 499 states have call predecessors, (647), 493 states have call successors, (647) [2025-02-05 15:33:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4695 transitions. [2025-02-05 15:33:22,043 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4695 transitions. Word has length 237 [2025-02-05 15:33:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:22,043 INFO L471 AbstractCegarLoop]: Abstraction has 2941 states and 4695 transitions. [2025-02-05 15:33:22,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4695 transitions. [2025-02-05 15:33:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-02-05 15:33:22,048 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:22,048 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 5, 4, 3, 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] [2025-02-05 15:33:22,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-02-05 15:33:22,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:22,249 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:22,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -64934231, now seen corresponding path program 1 times [2025-02-05 15:33:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714710165] [2025-02-05 15:33:22,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:22,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-02-05 15:33:22,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-02-05 15:33:22,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:22,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-02-05 15:33:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714710165] [2025-02-05 15:33:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714710165] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618312154] [2025-02-05 15:33:22,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:22,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:22,573 INFO L229 MonitoredProcess]: Starting monitored process 35 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 15:33:22,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-05 15:33:22,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-02-05 15:33:22,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-02-05 15:33:22,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:22,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:22,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:33:22,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-02-05 15:33:23,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:33:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-02-05 15:33:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618312154] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:33:23,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:33:23,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-02-05 15:33:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771246993] [2025-02-05 15:33:23,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:33:23,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 15:33:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:23,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 15:33:23,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-02-05 15:33:23,483 INFO L87 Difference]: Start difference. First operand 2941 states and 4695 transitions. Second operand has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) [2025-02-05 15:33:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:28,497 INFO L93 Difference]: Finished difference Result 9092 states and 14807 transitions. [2025-02-05 15:33:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 15:33:28,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) Word has length 237 [2025-02-05 15:33:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:28,520 INFO L225 Difference]: With dead ends: 9092 [2025-02-05 15:33:28,520 INFO L226 Difference]: Without dead ends: 6280 [2025-02-05 15:33:28,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 15:33:28,531 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 5826 mSDsluCounter, 8123 mSDsCounter, 0 mSdLazyCounter, 15001 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5826 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 16743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 15001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:28,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5826 Valid, 8930 Invalid, 16743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 15001 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-05 15:33:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2025-02-05 15:33:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6192. [2025-02-05 15:33:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4673 states have (on average 1.5741493687138883) internal successors, (7356), 4905 states have internal predecessors, (7356), 1159 states have call successors, (1159), 256 states have call predecessors, (1159), 359 states have return successors, (1525), 1182 states have call predecessors, (1525), 1155 states have call successors, (1525) [2025-02-05 15:33:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 10040 transitions. [2025-02-05 15:33:28,770 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 10040 transitions. Word has length 237 [2025-02-05 15:33:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:28,771 INFO L471 AbstractCegarLoop]: Abstraction has 6192 states and 10040 transitions. [2025-02-05 15:33:28,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) [2025-02-05 15:33:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 10040 transitions. [2025-02-05 15:33:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-02-05 15:33:28,778 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:28,778 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 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] [2025-02-05 15:33:28,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-05 15:33:28,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-05 15:33:28,982 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:28,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1771244430, now seen corresponding path program 1 times [2025-02-05 15:33:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047419523] [2025-02-05 15:33:28,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:28,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-02-05 15:33:29,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-02-05 15:33:29,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:29,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-05 15:33:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047419523] [2025-02-05 15:33:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047419523] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:29,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:33:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:33:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357327051] [2025-02-05 15:33:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:29,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:33:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:29,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:33:29,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:33:29,083 INFO L87 Difference]: Start difference. First operand 6192 states and 10040 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:29,357 INFO L93 Difference]: Finished difference Result 12336 states and 20066 transitions. [2025-02-05 15:33:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:33:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 241 [2025-02-05 15:33:29,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:29,383 INFO L225 Difference]: With dead ends: 12336 [2025-02-05 15:33:29,383 INFO L226 Difference]: Without dead ends: 6276 [2025-02-05 15:33:29,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:33:29,397 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 0 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:29,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4059 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6276 states. [2025-02-05 15:33:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6276 to 6252. [2025-02-05 15:33:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 4721 states have (on average 1.5683117983478077) internal successors, (7404), 4953 states have internal predecessors, (7404), 1159 states have call successors, (1159), 256 states have call predecessors, (1159), 371 states have return successors, (1549), 1194 states have call predecessors, (1549), 1155 states have call successors, (1549) [2025-02-05 15:33:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 10112 transitions. [2025-02-05 15:33:29,723 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 10112 transitions. Word has length 241 [2025-02-05 15:33:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:29,724 INFO L471 AbstractCegarLoop]: Abstraction has 6252 states and 10112 transitions. [2025-02-05 15:33:29,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-05 15:33:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 10112 transitions. [2025-02-05 15:33:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-02-05 15:33:29,733 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:29,733 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 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] [2025-02-05 15:33:29,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-02-05 15:33:29,733 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:29,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash 312141688, now seen corresponding path program 1 times [2025-02-05 15:33:29,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:29,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962192754] [2025-02-05 15:33:29,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:29,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:29,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-02-05 15:33:29,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-02-05 15:33:29,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:29,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-05 15:33:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962192754] [2025-02-05 15:33:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962192754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:29,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:33:29,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 15:33:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736682762] [2025-02-05 15:33:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:29,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:33:29,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:29,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:33:29,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:33:29,985 INFO L87 Difference]: Start difference. First operand 6252 states and 10112 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 7 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2025-02-05 15:33:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:32,773 INFO L93 Difference]: Finished difference Result 20884 states and 34074 transitions. [2025-02-05 15:33:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:33:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 7 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 245 [2025-02-05 15:33:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:32,827 INFO L225 Difference]: With dead ends: 20884 [2025-02-05 15:33:32,828 INFO L226 Difference]: Without dead ends: 14756 [2025-02-05 15:33:32,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:33:32,850 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 5192 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 1391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 4171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:32,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5342 Valid, 1320 Invalid, 4171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-05 15:33:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14756 states. [2025-02-05 15:33:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14756 to 14612. [2025-02-05 15:33:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14612 states, 10937 states have (on average 1.5506994605467679) internal successors, (16960), 11480 states have internal predecessors, (16960), 2816 states have call successors, (2816), 592 states have call predecessors, (2816), 858 states have return successors, (3812), 2903 states have call predecessors, (3812), 2812 states have call successors, (3812) [2025-02-05 15:33:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14612 states to 14612 states and 23588 transitions. [2025-02-05 15:33:33,520 INFO L78 Accepts]: Start accepts. Automaton has 14612 states and 23588 transitions. Word has length 245 [2025-02-05 15:33:33,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:33,520 INFO L471 AbstractCegarLoop]: Abstraction has 14612 states and 23588 transitions. [2025-02-05 15:33:33,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 7 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2025-02-05 15:33:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14612 states and 23588 transitions. [2025-02-05 15:33:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-02-05 15:33:33,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:33,527 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 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] [2025-02-05 15:33:33,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-02-05 15:33:33,527 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:33,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash 506115010, now seen corresponding path program 1 times [2025-02-05 15:33:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:33,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569419149] [2025-02-05 15:33:33,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:33,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-02-05 15:33:33,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-02-05 15:33:33,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:33,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-05 15:33:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:33,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569419149] [2025-02-05 15:33:33,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569419149] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:33,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:33:33,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:33:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816485865] [2025-02-05 15:33:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:33,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:33:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:33,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:33:33,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:33:33,655 INFO L87 Difference]: Start difference. First operand 14612 states and 23588 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-02-05 15:33:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:34,440 INFO L93 Difference]: Finished difference Result 28616 states and 46636 transitions. [2025-02-05 15:33:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:33:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 248 [2025-02-05 15:33:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:34,506 INFO L225 Difference]: With dead ends: 28616 [2025-02-05 15:33:34,507 INFO L226 Difference]: Without dead ends: 14744 [2025-02-05 15:33:34,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 15:33:34,549 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 224 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:34,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 4912 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:34,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14744 states. [2025-02-05 15:33:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14744 to 14612. [2025-02-05 15:33:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14612 states, 10937 states have (on average 1.5338758343238548) internal successors, (16776), 11480 states have internal predecessors, (16776), 2816 states have call successors, (2816), 592 states have call predecessors, (2816), 858 states have return successors, (3812), 2903 states have call predecessors, (3812), 2812 states have call successors, (3812) [2025-02-05 15:33:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14612 states to 14612 states and 23404 transitions. [2025-02-05 15:33:35,564 INFO L78 Accepts]: Start accepts. Automaton has 14612 states and 23404 transitions. Word has length 248 [2025-02-05 15:33:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:35,564 INFO L471 AbstractCegarLoop]: Abstraction has 14612 states and 23404 transitions. [2025-02-05 15:33:35,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-02-05 15:33:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14612 states and 23404 transitions. [2025-02-05 15:33:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-02-05 15:33:35,573 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:35,573 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 4, 3, 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] [2025-02-05 15:33:35,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-02-05 15:33:35,573 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:35,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1947929926, now seen corresponding path program 1 times [2025-02-05 15:33:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:35,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255500483] [2025-02-05 15:33:35,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:35,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 253 statements into 1 equivalence classes. [2025-02-05 15:33:35,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 253 of 253 statements. [2025-02-05 15:33:35,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:35,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 24 proven. 19 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2025-02-05 15:33:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255500483] [2025-02-05 15:33:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255500483] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776099802] [2025-02-05 15:33:35,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:35,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:35,676 INFO L229 MonitoredProcess]: Starting monitored process 36 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 15:33:35,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-05 15:33:35,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 253 statements into 1 equivalence classes. [2025-02-05 15:33:36,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 253 of 253 statements. [2025-02-05 15:33:36,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:36,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:36,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:36,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2025-02-05 15:33:36,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:36,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776099802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:36,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:36,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:33:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466700276] [2025-02-05 15:33:36,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:36,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:36,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:36,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:36,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:33:36,073 INFO L87 Difference]: Start difference. First operand 14612 states and 23404 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 15:33:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:36,922 INFO L93 Difference]: Finished difference Result 29210 states and 47096 transitions. [2025-02-05 15:33:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 253 [2025-02-05 15:33:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:37,012 INFO L225 Difference]: With dead ends: 29210 [2025-02-05 15:33:37,012 INFO L226 Difference]: Without dead ends: 14636 [2025-02-05 15:33:37,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:33:37,061 INFO L435 NwaCegarLoop]: 795 mSDtfsCounter, 8 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:37,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2348 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14636 states. [2025-02-05 15:33:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14636 to 14620. [2025-02-05 15:33:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14620 states, 10945 states have (on average 1.5265417999086341) internal successors, (16708), 11488 states have internal predecessors, (16708), 2816 states have call successors, (2816), 592 states have call predecessors, (2816), 858 states have return successors, (3812), 2903 states have call predecessors, (3812), 2812 states have call successors, (3812) [2025-02-05 15:33:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14620 states to 14620 states and 23336 transitions. [2025-02-05 15:33:37,964 INFO L78 Accepts]: Start accepts. Automaton has 14620 states and 23336 transitions. Word has length 253 [2025-02-05 15:33:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:37,965 INFO L471 AbstractCegarLoop]: Abstraction has 14620 states and 23336 transitions. [2025-02-05 15:33:37,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 15:33:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 14620 states and 23336 transitions. [2025-02-05 15:33:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-02-05 15:33:37,975 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:37,975 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 5, 3, 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] [2025-02-05 15:33:37,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-02-05 15:33:38,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:38,176 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:38,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2147077468, now seen corresponding path program 2 times [2025-02-05 15:33:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089103665] [2025-02-05 15:33:38,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:33:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:38,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 254 statements into 2 equivalence classes. [2025-02-05 15:33:38,212 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 254 of 254 statements. [2025-02-05 15:33:38,213 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:33:38,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2025-02-05 15:33:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089103665] [2025-02-05 15:33:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089103665] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789418947] [2025-02-05 15:33:38,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:33:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:38,275 INFO L229 MonitoredProcess]: Starting monitored process 37 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 15:33:38,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-02-05 15:33:38,458 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 254 statements into 2 equivalence classes. [2025-02-05 15:33:38,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 254 of 254 statements. [2025-02-05 15:33:38,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:33:38,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:38,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:33:38,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-05 15:33:38,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:38,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789418947] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:38,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-05 15:33:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927367408] [2025-02-05 15:33:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:38,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:38,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:38,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:38,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:33:38,678 INFO L87 Difference]: Start difference. First operand 14620 states and 23336 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 15:33:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:39,350 INFO L93 Difference]: Finished difference Result 28932 states and 46546 transitions. [2025-02-05 15:33:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:39,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 254 [2025-02-05 15:33:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:39,428 INFO L225 Difference]: With dead ends: 28932 [2025-02-05 15:33:39,429 INFO L226 Difference]: Without dead ends: 14306 [2025-02-05 15:33:39,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:33:39,479 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 8 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:39,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2325 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2025-02-05 15:33:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14306. [2025-02-05 15:33:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14306 states, 10681 states have (on average 1.526261585993821) internal successors, (16302), 11219 states have internal predecessors, (16302), 2786 states have call successors, (2786), 592 states have call predecessors, (2786), 838 states have return successors, (3704), 2858 states have call predecessors, (3704), 2782 states have call successors, (3704) [2025-02-05 15:33:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14306 states to 14306 states and 22792 transitions. [2025-02-05 15:33:40,104 INFO L78 Accepts]: Start accepts. Automaton has 14306 states and 22792 transitions. Word has length 254 [2025-02-05 15:33:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:40,106 INFO L471 AbstractCegarLoop]: Abstraction has 14306 states and 22792 transitions. [2025-02-05 15:33:40,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 15:33:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 14306 states and 22792 transitions. [2025-02-05 15:33:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-02-05 15:33:40,116 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:40,116 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 5, 4, 3, 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] [2025-02-05 15:33:40,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-02-05 15:33:40,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:40,316 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:40,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash 757860460, now seen corresponding path program 1 times [2025-02-05 15:33:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875393796] [2025-02-05 15:33:40,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:40,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-02-05 15:33:40,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-02-05 15:33:40,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:40,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-02-05 15:33:40,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875393796] [2025-02-05 15:33:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875393796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185761508] [2025-02-05 15:33:40,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:40,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:40,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:40,465 INFO L229 MonitoredProcess]: Starting monitored process 38 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 15:33:40,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-02-05 15:33:40,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-02-05 15:33:40,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-02-05 15:33:40,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:40,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:40,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:33:40,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2025-02-05 15:33:40,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185761508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:40,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:40,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-02-05 15:33:40,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571119233] [2025-02-05 15:33:40,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:40,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:40,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:40,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:40,847 INFO L87 Difference]: Start difference. First operand 14306 states and 22792 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:33:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:41,344 INFO L93 Difference]: Finished difference Result 20354 states and 32286 transitions. [2025-02-05 15:33:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:33:41,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 254 [2025-02-05 15:33:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:41,413 INFO L225 Difference]: With dead ends: 20354 [2025-02-05 15:33:41,413 INFO L226 Difference]: Without dead ends: 13903 [2025-02-05 15:33:41,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:33:41,437 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 1 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:41,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2399 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:33:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13903 states. [2025-02-05 15:33:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13903 to 13903. [2025-02-05 15:33:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13903 states, 10359 states have (on average 1.531228883096824) internal successors, (15862), 10904 states have internal predecessors, (15862), 2711 states have call successors, (2711), 588 states have call predecessors, (2711), 832 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13903 states to 13903 states and 22122 transitions. [2025-02-05 15:33:42,107 INFO L78 Accepts]: Start accepts. Automaton has 13903 states and 22122 transitions. Word has length 254 [2025-02-05 15:33:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:42,107 INFO L471 AbstractCegarLoop]: Abstraction has 13903 states and 22122 transitions. [2025-02-05 15:33:42,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 15:33:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13903 states and 22122 transitions. [2025-02-05 15:33:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-05 15:33:42,113 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:42,113 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1, 1] [2025-02-05 15:33:42,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-02-05 15:33:42,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:42,313 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:42,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash -495193803, now seen corresponding path program 1 times [2025-02-05 15:33:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:42,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893075221] [2025-02-05 15:33:42,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:42,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-05 15:33:42,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-05 15:33:42,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:42,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-02-05 15:33:42,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:42,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893075221] [2025-02-05 15:33:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893075221] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:42,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3231480] [2025-02-05 15:33:42,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:42,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:42,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:42,652 INFO L229 MonitoredProcess]: Starting monitored process 39 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 15:33:42,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-02-05 15:33:42,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-05 15:33:42,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-05 15:33:42,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:42,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:43,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:43,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-02-05 15:33:43,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:43,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3231480] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:43,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:33:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684100079] [2025-02-05 15:33:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:43,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:43,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:43,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:43,025 INFO L87 Difference]: Start difference. First operand 13903 states and 22122 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:43,712 INFO L93 Difference]: Finished difference Result 28623 states and 46196 transitions. [2025-02-05 15:33:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:43,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 257 [2025-02-05 15:33:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:43,790 INFO L225 Difference]: With dead ends: 28623 [2025-02-05 15:33:43,790 INFO L226 Difference]: Without dead ends: 14803 [2025-02-05 15:33:43,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:43,835 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 144 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:43,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2218 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14803 states. [2025-02-05 15:33:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14803 to 14683. [2025-02-05 15:33:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14683 states, 11119 states have (on average 1.5578739095242378) internal successors, (17322), 11664 states have internal predecessors, (17322), 2711 states have call successors, (2711), 608 states have call predecessors, (2711), 852 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14683 states to 14683 states and 23582 transitions. [2025-02-05 15:33:44,752 INFO L78 Accepts]: Start accepts. Automaton has 14683 states and 23582 transitions. Word has length 257 [2025-02-05 15:33:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:44,752 INFO L471 AbstractCegarLoop]: Abstraction has 14683 states and 23582 transitions. [2025-02-05 15:33:44,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 14683 states and 23582 transitions. [2025-02-05 15:33:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-02-05 15:33:44,759 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:44,759 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2025-02-05 15:33:44,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-02-05 15:33:44,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-02-05 15:33:44,960 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:44,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 944995882, now seen corresponding path program 1 times [2025-02-05 15:33:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422022027] [2025-02-05 15:33:44,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:44,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-02-05 15:33:44,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-02-05 15:33:45,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:45,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-02-05 15:33:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422022027] [2025-02-05 15:33:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422022027] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486309688] [2025-02-05 15:33:45,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:45,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:45,659 INFO L229 MonitoredProcess]: Starting monitored process 40 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 15:33:45,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-02-05 15:33:45,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-02-05 15:33:46,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-02-05 15:33:46,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:46,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:46,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:46,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 15:33:46,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:46,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486309688] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:46,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:33:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348808840] [2025-02-05 15:33:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:46,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:46,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:46,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:46,080 INFO L87 Difference]: Start difference. First operand 14683 states and 23582 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:47,288 INFO L93 Difference]: Finished difference Result 30243 states and 49116 transitions. [2025-02-05 15:33:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 262 [2025-02-05 15:33:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:47,366 INFO L225 Difference]: With dead ends: 30243 [2025-02-05 15:33:47,366 INFO L226 Difference]: Without dead ends: 15643 [2025-02-05 15:33:47,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:47,412 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 142 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2215 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 15:33:47,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2215 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15643 states. [2025-02-05 15:33:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15643 to 15463. [2025-02-05 15:33:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15463 states, 11879 states have (on average 1.5811095210034514) internal successors, (18782), 12424 states have internal predecessors, (18782), 2711 states have call successors, (2711), 628 states have call predecessors, (2711), 872 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 25042 transitions. [2025-02-05 15:33:48,081 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 25042 transitions. Word has length 262 [2025-02-05 15:33:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:48,082 INFO L471 AbstractCegarLoop]: Abstraction has 15463 states and 25042 transitions. [2025-02-05 15:33:48,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 25042 transitions. [2025-02-05 15:33:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-05 15:33:48,088 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:48,088 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2025-02-05 15:33:48,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-02-05 15:33:48,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-02-05 15:33:48,292 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:48,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 452248714, now seen corresponding path program 1 times [2025-02-05 15:33:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879564906] [2025-02-05 15:33:48,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:48,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 266 statements into 1 equivalence classes. [2025-02-05 15:33:48,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 266 of 266 statements. [2025-02-05 15:33:48,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:48,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2025-02-05 15:33:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879564906] [2025-02-05 15:33:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879564906] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688556431] [2025-02-05 15:33:48,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:48,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:48,573 INFO L229 MonitoredProcess]: Starting monitored process 41 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 15:33:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-02-05 15:33:48,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 266 statements into 1 equivalence classes. [2025-02-05 15:33:48,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 266 of 266 statements. [2025-02-05 15:33:48,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:48,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:48,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:48,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2025-02-05 15:33:48,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:48,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688556431] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:48,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:48,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:33:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111437078] [2025-02-05 15:33:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:48,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:48,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:48,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:48,948 INFO L87 Difference]: Start difference. First operand 15463 states and 25042 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:49,618 INFO L93 Difference]: Finished difference Result 31863 states and 52031 transitions. [2025-02-05 15:33:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 266 [2025-02-05 15:33:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:49,691 INFO L225 Difference]: With dead ends: 31863 [2025-02-05 15:33:49,691 INFO L226 Difference]: Without dead ends: 16483 [2025-02-05 15:33:49,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:49,732 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 140 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2212 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 15:33:49,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2212 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16483 states. [2025-02-05 15:33:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16483 to 16243. [2025-02-05 15:33:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16243 states, 12639 states have (on average 1.601550755597753) internal successors, (20242), 13184 states have internal predecessors, (20242), 2711 states have call successors, (2711), 648 states have call predecessors, (2711), 892 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16243 states to 16243 states and 26502 transitions. [2025-02-05 15:33:50,338 INFO L78 Accepts]: Start accepts. Automaton has 16243 states and 26502 transitions. Word has length 266 [2025-02-05 15:33:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:50,339 INFO L471 AbstractCegarLoop]: Abstraction has 16243 states and 26502 transitions. [2025-02-05 15:33:50,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 16243 states and 26502 transitions. [2025-02-05 15:33:50,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2025-02-05 15:33:50,345 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:50,345 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:33:50,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-02-05 15:33:50,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-02-05 15:33:50,546 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:50,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1151567123, now seen corresponding path program 1 times [2025-02-05 15:33:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:50,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500958644] [2025-02-05 15:33:50,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:50,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 269 statements into 1 equivalence classes. [2025-02-05 15:33:50,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 269 of 269 statements. [2025-02-05 15:33:50,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:50,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2025-02-05 15:33:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500958644] [2025-02-05 15:33:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500958644] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889081230] [2025-02-05 15:33:50,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:50,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:50,745 INFO L229 MonitoredProcess]: Starting monitored process 42 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 15:33:50,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-02-05 15:33:50,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 269 statements into 1 equivalence classes. [2025-02-05 15:33:51,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 269 of 269 statements. [2025-02-05 15:33:51,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:51,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:51,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:51,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-02-05 15:33:51,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889081230] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:51,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:33:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996237624] [2025-02-05 15:33:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:51,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:51,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:51,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:51,119 INFO L87 Difference]: Start difference. First operand 16243 states and 26502 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:51,859 INFO L93 Difference]: Finished difference Result 33483 states and 54946 transitions. [2025-02-05 15:33:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 269 [2025-02-05 15:33:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:51,931 INFO L225 Difference]: With dead ends: 33483 [2025-02-05 15:33:51,931 INFO L226 Difference]: Without dead ends: 17323 [2025-02-05 15:33:51,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:51,967 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 138 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:51,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2209 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17323 states. [2025-02-05 15:33:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17323 to 17023. [2025-02-05 15:33:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 13399 states have (on average 1.619673109933577) internal successors, (21702), 13944 states have internal predecessors, (21702), 2711 states have call successors, (2711), 668 states have call predecessors, (2711), 912 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 27962 transitions. [2025-02-05 15:33:52,631 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 27962 transitions. Word has length 269 [2025-02-05 15:33:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:52,632 INFO L471 AbstractCegarLoop]: Abstraction has 17023 states and 27962 transitions. [2025-02-05 15:33:52,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 27962 transitions. [2025-02-05 15:33:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-02-05 15:33:52,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:52,639 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:33:52,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-02-05 15:33:52,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-02-05 15:33:52,839 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:52,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1060393123, now seen corresponding path program 1 times [2025-02-05 15:33:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:52,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448324616] [2025-02-05 15:33:52,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:52,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:52,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-02-05 15:33:52,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-02-05 15:33:52,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:52,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 15:33:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:53,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448324616] [2025-02-05 15:33:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448324616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:53,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121671996] [2025-02-05 15:33:53,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:53,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:53,059 INFO L229 MonitoredProcess]: Starting monitored process 43 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 15:33:53,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-02-05 15:33:53,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-02-05 15:33:53,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-02-05 15:33:53,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:53,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:53,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:33:53,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-02-05 15:33:53,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121671996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:33:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015474181] [2025-02-05 15:33:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:53,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:33:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:53,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:33:53,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:33:53,455 INFO L87 Difference]: Start difference. First operand 17023 states and 27962 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:54,117 INFO L93 Difference]: Finished difference Result 35103 states and 57861 transitions. [2025-02-05 15:33:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:33:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 271 [2025-02-05 15:33:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:54,200 INFO L225 Difference]: With dead ends: 35103 [2025-02-05 15:33:54,200 INFO L226 Difference]: Without dead ends: 18163 [2025-02-05 15:33:54,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:33:54,242 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 136 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:54,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2202 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:33:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18163 states. [2025-02-05 15:33:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18163 to 17803. [2025-02-05 15:33:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17803 states, 14159 states have (on average 1.6358499894060314) internal successors, (23162), 14704 states have internal predecessors, (23162), 2711 states have call successors, (2711), 688 states have call predecessors, (2711), 932 states have return successors, (3549), 2774 states have call predecessors, (3549), 2707 states have call successors, (3549) [2025-02-05 15:33:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17803 states to 17803 states and 29422 transitions. [2025-02-05 15:33:54,970 INFO L78 Accepts]: Start accepts. Automaton has 17803 states and 29422 transitions. Word has length 271 [2025-02-05 15:33:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:33:54,970 INFO L471 AbstractCegarLoop]: Abstraction has 17803 states and 29422 transitions. [2025-02-05 15:33:54,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-02-05 15:33:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 17803 states and 29422 transitions. [2025-02-05 15:33:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-02-05 15:33:54,977 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:33:54,977 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:33:54,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-02-05 15:33:55,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-02-05 15:33:55,178 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:33:55,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:33:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1718240129, now seen corresponding path program 1 times [2025-02-05 15:33:55,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:33:55,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882371928] [2025-02-05 15:33:55,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:55,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:33:55,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-02-05 15:33:55,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-02-05 15:33:55,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:55,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-02-05 15:33:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:33:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882371928] [2025-02-05 15:33:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882371928] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:33:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230153739] [2025-02-05 15:33:55,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:33:55,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:33:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:33:55,384 INFO L229 MonitoredProcess]: Starting monitored process 44 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 15:33:55,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-02-05 15:33:55,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-02-05 15:33:55,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-02-05 15:33:55,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:33:55,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:33:55,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:33:55,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:33:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-02-05 15:33:56,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:33:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230153739] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:33:56,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:33:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2025-02-05 15:33:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074982980] [2025-02-05 15:33:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:33:56,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 15:33:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:33:56,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 15:33:56,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:33:56,125 INFO L87 Difference]: Start difference. First operand 17803 states and 29422 transitions. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 6 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2025-02-05 15:33:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:33:59,784 INFO L93 Difference]: Finished difference Result 49897 states and 83058 transitions. [2025-02-05 15:33:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 15:33:59,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 6 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 271 [2025-02-05 15:33:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:33:59,913 INFO L225 Difference]: With dead ends: 49897 [2025-02-05 15:33:59,914 INFO L226 Difference]: Without dead ends: 32145 [2025-02-05 15:33:59,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:33:59,964 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 2058 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 6239 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 6773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 6239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:33:59,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 2858 Invalid, 6773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 6239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-05 15:33:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32145 states.