./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product21.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_spec13_product21.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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:30:40,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:30:40,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:30:40,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:30:40,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:30:40,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:30:40,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:30:40,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:30:40,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:30:40,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:30:40,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:30:40,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:30:40,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:30:40,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:30:40,617 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:30:40,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:30:40,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:30:40,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:30:40,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:30:40,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:30:40,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:30:40,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:30:40,622 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 -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2025-02-05 15:30:40,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:30:40,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:30:40,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:30:40,880 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:30:40,880 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:30:40,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2025-02-05 15:30:42,098 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f45f087b/5bd47a3d0f26413f9e033ff2f900f841/FLAG331bbf595 [2025-02-05 15:30:42,479 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:30:42,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2025-02-05 15:30:42,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f45f087b/5bd47a3d0f26413f9e033ff2f900f841/FLAG331bbf595 [2025-02-05 15:30:42,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f45f087b/5bd47a3d0f26413f9e033ff2f900f841 [2025-02-05 15:30:42,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:30:42,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:30:42,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:30:42,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:30:42,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:30:42,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:30:42" (1/1) ... [2025-02-05 15:30:42,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374b78d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:42, skipping insertion in model container [2025-02-05 15:30:42,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:30:42" (1/1) ... [2025-02-05 15:30:42,709 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:30:42,915 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_spec13_product21.cil.c[58922,58935] [2025-02-05 15:30:42,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:30:42,959 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:30:42,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2025-02-05 15:30:42,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2025-02-05 15:30:42,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2025-02-05 15:30:42,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2025-02-05 15:30:43,056 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_spec13_product21.cil.c[58922,58935] [2025-02-05 15:30:43,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:30:43,100 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:30:43,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43 WrapperNode [2025-02-05 15:30:43,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:30:43,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:30:43,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:30:43,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:30:43,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,167 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 814 [2025-02-05 15:30:43,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:30:43,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:30:43,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:30:43,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:30:43,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,213 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-02-05 15:30:43,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,237 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:30:43,264 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:30:43,265 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:30:43,265 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:30:43,268 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (1/1) ... [2025-02-05 15:30:43,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:30:43,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:43,291 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 15:30:43,293 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 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:30:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:30:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:30:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:30:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:30:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:30:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:30:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:30:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:30:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:30:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:30:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:30:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:30:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:30:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:30:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:30:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:30:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:30:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:30:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:30:43,469 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:30:43,471 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:30:43,499 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1512: #res := ~retValue_acc~14; [2025-02-05 15:30:43,514 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L872: #res := ~retValue_acc~7; [2025-02-05 15:30:43,532 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L794: #res := ~retValue_acc~5; [2025-02-05 15:30:43,534 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1307: #res := ~retValue_acc~10; [2025-02-05 15:30:43,596 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2743: #res := ~retValue_acc~24; [2025-02-05 15:30:43,761 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2036: #res#1 := ~retValue_acc~19#1; [2025-02-05 15:30:43,762 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2070-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~20#1; [2025-02-05 15:30:43,831 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2168: #res := ~retValue_acc~23; [2025-02-05 15:30:43,845 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L833: #res := ~retValue_acc~6; [2025-02-05 15:30:43,875 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1503: #res := ~retValue_acc~13; [2025-02-05 15:30:43,945 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1632-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~16#1; [2025-02-05 15:30:43,946 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1645-1: isIdle_#res#1 := isIdle_~retValue_acc~17#1; [2025-02-05 15:30:44,056 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2126-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~21#1; [2025-02-05 15:30:44,056 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1460-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~11#1; [2025-02-05 15:30:44,056 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2154-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~22#1; [2025-02-05 15:30:44,116 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: #res := ~retValue_acc~1; [2025-02-05 15:30:44,228 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1997: #res := ~retValue_acc~18; [2025-02-05 15:30:44,289 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1227-1: main_#res#1 := main_~retValue_acc~9#1; [2025-02-05 15:30:44,289 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L751-1: valid_product_#res#1 := valid_product_~retValue_acc~4#1; [2025-02-05 15:30:44,297 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~0; [2025-02-05 15:30:44,302 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: #res := ~retValue_acc~2; [2025-02-05 15:30:44,458 INFO L? ?]: Removed 458 outVars from TransFormulas that were not future-live. [2025-02-05 15:30:44,459 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:30:44,474 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:30:44,474 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:30:44,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:30:44 BoogieIcfgContainer [2025-02-05 15:30:44,475 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:30:44,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:30:44,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:30:44,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:30:44,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:30:42" (1/3) ... [2025-02-05 15:30:44,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f6714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:30:44, skipping insertion in model container [2025-02-05 15:30:44,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:43" (2/3) ... [2025-02-05 15:30:44,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f6714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:30:44, skipping insertion in model container [2025-02-05 15:30:44,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:30:44" (3/3) ... [2025-02-05 15:30:44,481 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2025-02-05 15:30:44,494 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:30:44,497 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product21.cil.c that has 26 procedures, 592 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-05 15:30:44,563 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:30:44,573 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;@31e269a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:30:44,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:30:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 463 states have (on average 1.6868250539956804) internal successors, (781), 484 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-02-05 15:30:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:30:44,598 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:44,598 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:44,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:44,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash -553793589, now seen corresponding path program 1 times [2025-02-05 15:30:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595711004] [2025-02-05 15:30:44,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:44,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:30:44,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:30:44,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:44,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595711004] [2025-02-05 15:30:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595711004] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994399006] [2025-02-05 15:30:45,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:45,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:45,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:45,120 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 15:30:45,125 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 15:30:45,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:30:45,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:30:45,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:45,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:45,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 15:30:45,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:30:45,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:45,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994399006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:45,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:45,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-02-05 15:30:45,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281872680] [2025-02-05 15:30:45,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:45,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:30:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:45,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:30:45,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:30:45,456 INFO L87 Difference]: Start difference. First operand has 593 states, 463 states have (on average 1.6868250539956804) internal successors, (781), 484 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:45,533 INFO L93 Difference]: Finished difference Result 1164 states and 1945 transitions. [2025-02-05 15:30:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:30:45,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2025-02-05 15:30:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:45,545 INFO L225 Difference]: With dead ends: 1164 [2025-02-05 15:30:45,545 INFO L226 Difference]: Without dead ends: 580 [2025-02-05 15:30:45,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:30:45,554 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:45,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-02-05 15:30:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-02-05 15:30:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 456 states have (on average 1.6732456140350878) internal successors, (763), 472 states have internal predecessors, (763), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:30:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 960 transitions. [2025-02-05 15:30:45,605 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 960 transitions. Word has length 114 [2025-02-05 15:30:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:45,606 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 960 transitions. [2025-02-05 15:30:45,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 960 transitions. [2025-02-05 15:30:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 15:30:45,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:45,613 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:45,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 15:30:45,813 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 15:30:45,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:45,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash -263554001, now seen corresponding path program 1 times [2025-02-05 15:30:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:45,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668216196] [2025-02-05 15:30:45,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:45,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:30:45,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:30:45,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:45,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:30:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668216196] [2025-02-05 15:30:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668216196] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307201203] [2025-02-05 15:30:46,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:46,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:46,011 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 15:30:46,038 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 15:30:46,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:30:46,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:30:46,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:46,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:46,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:46,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:46,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307201203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:46,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:46,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348801783] [2025-02-05 15:30:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:46,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:46,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:46,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:46,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:46,356 INFO L87 Difference]: Start difference. First operand 580 states and 960 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:46,478 INFO L93 Difference]: Finished difference Result 1161 states and 1928 transitions. [2025-02-05 15:30:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:46,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2025-02-05 15:30:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:46,486 INFO L225 Difference]: With dead ends: 1161 [2025-02-05 15:30:46,486 INFO L226 Difference]: Without dead ends: 589 [2025-02-05 15:30:46,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 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 15:30:46,490 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 17 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:46,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2833 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-02-05 15:30:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-02-05 15:30:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 464 states have (on average 1.6745689655172413) internal successors, (777), 480 states have internal predecessors, (777), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:30:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 974 transitions. [2025-02-05 15:30:46,536 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 974 transitions. Word has length 116 [2025-02-05 15:30:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:46,536 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 974 transitions. [2025-02-05 15:30:46,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 974 transitions. [2025-02-05 15:30:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-05 15:30:46,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:46,540 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:46,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:46,744 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 15:30:46,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:46,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1035725033, now seen corresponding path program 1 times [2025-02-05 15:30:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830007526] [2025-02-05 15:30:46,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:46,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-05 15:30:46,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-05 15:30:46,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:46,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830007526] [2025-02-05 15:30:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830007526] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452988171] [2025-02-05 15:30:47,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:47,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:47,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:47,031 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 15:30:47,032 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 15:30:47,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-05 15:30:47,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-05 15:30:47,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:47,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:47,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:47,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:47,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:47,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452988171] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:47,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:47,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-02-05 15:30:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639643101] [2025-02-05 15:30:47,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:47,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:47,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:47,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:47,286 INFO L87 Difference]: Start difference. First operand 589 states and 974 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:47,470 INFO L93 Difference]: Finished difference Result 1231 states and 2052 transitions. [2025-02-05 15:30:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2025-02-05 15:30:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:47,474 INFO L225 Difference]: With dead ends: 1231 [2025-02-05 15:30:47,474 INFO L226 Difference]: Without dead ends: 652 [2025-02-05 15:30:47,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 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 15:30:47,477 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 122 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:47,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2728 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-02-05 15:30:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 634. [2025-02-05 15:30:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 508 states have (on average 1.6948818897637796) internal successors, (861), 524 states have internal predecessors, (861), 100 states have call successors, (100), 27 states have call predecessors, (100), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-02-05 15:30:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1058 transitions. [2025-02-05 15:30:47,529 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1058 transitions. Word has length 118 [2025-02-05 15:30:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:47,529 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 1058 transitions. [2025-02-05 15:30:47,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1058 transitions. [2025-02-05 15:30:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 15:30:47,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:47,533 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:47,545 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 15:30:47,733 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 15:30:47,734 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:47,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1111287115, now seen corresponding path program 1 times [2025-02-05 15:30:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602195556] [2025-02-05 15:30:47,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:47,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 15:30:47,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 15:30:47,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:47,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:47,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602195556] [2025-02-05 15:30:47,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602195556] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:47,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391396694] [2025-02-05 15:30:47,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:47,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:47,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:47,907 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 15:30:47,908 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 15:30:48,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 15:30:48,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 15:30:48,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:48,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:48,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391396694] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597494475] [2025-02-05 15:30:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:48,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:48,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:48,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:48,187 INFO L87 Difference]: Start difference. First operand 634 states and 1058 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:48,277 INFO L93 Difference]: Finished difference Result 1283 states and 2143 transitions. [2025-02-05 15:30:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2025-02-05 15:30:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:48,282 INFO L225 Difference]: With dead ends: 1283 [2025-02-05 15:30:48,282 INFO L226 Difference]: Without dead ends: 659 [2025-02-05 15:30:48,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 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 15:30:48,285 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 89 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:48,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5594 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-02-05 15:30:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 647. [2025-02-05 15:30:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 518 states have (on average 1.691119691119691) internal successors, (876), 536 states have internal predecessors, (876), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:30:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1079 transitions. [2025-02-05 15:30:48,312 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1079 transitions. Word has length 120 [2025-02-05 15:30:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:48,312 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1079 transitions. [2025-02-05 15:30:48,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1079 transitions. [2025-02-05 15:30:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:30:48,315 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:48,315 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:48,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:48,516 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 15:30:48,516 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:48,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 759779046, now seen corresponding path program 1 times [2025-02-05 15:30:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278556627] [2025-02-05 15:30:48,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:48,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:30:48,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:30:48,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:48,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278556627] [2025-02-05 15:30:48,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278556627] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991535375] [2025-02-05 15:30:48,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:48,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:48,593 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 15:30:48,595 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 15:30:48,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:30:48,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:30:48,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:48,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:30:48,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991535375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:48,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489388762] [2025-02-05 15:30:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:48,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:48,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:48,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:48,847 INFO L87 Difference]: Start difference. First operand 647 states and 1079 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:48,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:48,912 INFO L93 Difference]: Finished difference Result 1297 states and 2164 transitions. [2025-02-05 15:30:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2025-02-05 15:30:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:48,916 INFO L225 Difference]: With dead ends: 1297 [2025-02-05 15:30:48,916 INFO L226 Difference]: Without dead ends: 658 [2025-02-05 15:30:48,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 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 15:30:48,919 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 12 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:48,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2835 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2025-02-05 15:30:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 656. [2025-02-05 15:30:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.682509505703422) internal successors, (885), 544 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1087 transitions. [2025-02-05 15:30:48,942 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1087 transitions. Word has length 121 [2025-02-05 15:30:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:48,942 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1087 transitions. [2025-02-05 15:30:48,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1087 transitions. [2025-02-05 15:30:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:30:48,946 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:48,946 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:48,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 15:30:49,146 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 15:30:49,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:49,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash -363083100, now seen corresponding path program 1 times [2025-02-05 15:30:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:49,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107306403] [2025-02-05 15:30:49,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:49,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:30:49,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:30:49,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:49,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:49,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107306403] [2025-02-05 15:30:49,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107306403] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018952904] [2025-02-05 15:30:49,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:49,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:49,289 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 15:30:49,290 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 15:30:49,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:30:49,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:30:49,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:49,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:49,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:49,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:49,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:49,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018952904] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:49,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:49,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728889604] [2025-02-05 15:30:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:49,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:49,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:49,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:49,576 INFO L87 Difference]: Start difference. First operand 656 states and 1087 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:49,659 INFO L93 Difference]: Finished difference Result 1312 states and 2177 transitions. [2025-02-05 15:30:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2025-02-05 15:30:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:49,663 INFO L225 Difference]: With dead ends: 1312 [2025-02-05 15:30:49,663 INFO L226 Difference]: Without dead ends: 679 [2025-02-05 15:30:49,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 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 15:30:49,667 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 100 mSDsluCounter, 4631 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:49,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5578 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-02-05 15:30:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 656. [2025-02-05 15:30:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.682509505703422) internal successors, (885), 544 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1087 transitions. [2025-02-05 15:30:49,686 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1087 transitions. Word has length 121 [2025-02-05 15:30:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:49,687 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1087 transitions. [2025-02-05 15:30:49,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1087 transitions. [2025-02-05 15:30:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:30:49,690 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:49,690 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:49,697 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 15:30:49,890 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 15:30:49,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:49,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1725606829, now seen corresponding path program 1 times [2025-02-05 15:30:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104418694] [2025-02-05 15:30:49,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:49,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:30:49,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:30:49,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:49,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104418694] [2025-02-05 15:30:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104418694] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73687465] [2025-02-05 15:30:50,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:50,021 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 15:30:50,026 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 15:30:50,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:30:50,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:30:50,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:50,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:50,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:50,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73687465] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:50,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248990155] [2025-02-05 15:30:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:50,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:50,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:50,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:50,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:50,285 INFO L87 Difference]: Start difference. First operand 656 states and 1087 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:50,366 INFO L93 Difference]: Finished difference Result 1312 states and 2177 transitions. [2025-02-05 15:30:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:50,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2025-02-05 15:30:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:50,370 INFO L225 Difference]: With dead ends: 1312 [2025-02-05 15:30:50,370 INFO L226 Difference]: Without dead ends: 679 [2025-02-05 15:30:50,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 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 15:30:50,373 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 111 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:50,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5566 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-02-05 15:30:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 656. [2025-02-05 15:30:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.682509505703422) internal successors, (885), 544 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1087 transitions. [2025-02-05 15:30:50,392 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1087 transitions. Word has length 122 [2025-02-05 15:30:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:50,392 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1087 transitions. [2025-02-05 15:30:50,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1087 transitions. [2025-02-05 15:30:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:30:50,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:50,395 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:50,402 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 15:30:50,595 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 15:30:50,596 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:50,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:50,596 INFO L85 PathProgramCache]: Analyzing trace with hash 481523204, now seen corresponding path program 1 times [2025-02-05 15:30:50,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:50,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894241426] [2025-02-05 15:30:50,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:50,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:50,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:30:50,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:30:50,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:50,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:50,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:50,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894241426] [2025-02-05 15:30:50,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894241426] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183920979] [2025-02-05 15:30:50,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:50,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:50,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:50,715 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 15:30:50,718 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 15:30:50,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:30:50,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:30:50,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:50,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:50,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:50,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183920979] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:30:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192652005] [2025-02-05 15:30:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:50,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:50,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:50,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:30:50,976 INFO L87 Difference]: Start difference. First operand 656 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:51,098 INFO L93 Difference]: Finished difference Result 1315 states and 2181 transitions. [2025-02-05 15:30:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:51,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2025-02-05 15:30:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:51,103 INFO L225 Difference]: With dead ends: 1315 [2025-02-05 15:30:51,103 INFO L226 Difference]: Without dead ends: 682 [2025-02-05 15:30:51,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 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 15:30:51,106 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 95 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6462 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:51,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6462 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-02-05 15:30:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 656. [2025-02-05 15:30:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.682509505703422) internal successors, (885), 544 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1087 transitions. [2025-02-05 15:30:51,127 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1087 transitions. Word has length 122 [2025-02-05 15:30:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:51,127 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1087 transitions. [2025-02-05 15:30:51,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1087 transitions. [2025-02-05 15:30:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-05 15:30:51,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:51,131 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:51,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:51,335 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 15:30:51,335 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:51,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:51,336 INFO L85 PathProgramCache]: Analyzing trace with hash 360880823, now seen corresponding path program 1 times [2025-02-05 15:30:51,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:51,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408117279] [2025-02-05 15:30:51,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:51,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:30:51,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:30:51,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:51,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:30:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408117279] [2025-02-05 15:30:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408117279] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110542355] [2025-02-05 15:30:51,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:51,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:51,481 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:30:51,485 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 15:30:51,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:30:51,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:30:51,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:51,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:51,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:51,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:30:51,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110542355] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:30:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339882380] [2025-02-05 15:30:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:51,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:51,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:51,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:30:51,795 INFO L87 Difference]: Start difference. First operand 656 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:51,919 INFO L93 Difference]: Finished difference Result 1315 states and 2181 transitions. [2025-02-05 15:30:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2025-02-05 15:30:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:51,922 INFO L225 Difference]: With dead ends: 1315 [2025-02-05 15:30:51,923 INFO L226 Difference]: Without dead ends: 682 [2025-02-05 15:30:51,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 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 15:30:51,925 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 105 mSDsluCounter, 5513 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6450 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:51,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6450 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-02-05 15:30:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 656. [2025-02-05 15:30:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.682509505703422) internal successors, (885), 544 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1087 transitions. [2025-02-05 15:30:51,942 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1087 transitions. Word has length 123 [2025-02-05 15:30:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:51,942 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1087 transitions. [2025-02-05 15:30:51,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1087 transitions. [2025-02-05 15:30:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:30:51,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:51,945 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:51,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:52,146 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 15:30:52,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:52,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash 202321892, now seen corresponding path program 1 times [2025-02-05 15:30:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562181986] [2025-02-05 15:30:52,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:52,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:30:52,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:30:52,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562181986] [2025-02-05 15:30:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562181986] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100573017] [2025-02-05 15:30:52,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:52,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:52,218 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 15:30:52,222 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 15:30:52,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:30:52,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:30:52,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:52,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:30:52,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100573017] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398801554] [2025-02-05 15:30:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:52,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:52,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:52,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:52,481 INFO L87 Difference]: Start difference. First operand 656 states and 1087 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:52,528 INFO L93 Difference]: Finished difference Result 1278 states and 2126 transitions. [2025-02-05 15:30:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:52,528 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2025-02-05 15:30:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:52,532 INFO L225 Difference]: With dead ends: 1278 [2025-02-05 15:30:52,532 INFO L226 Difference]: Without dead ends: 656 [2025-02-05 15:30:52,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 15:30:52,535 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 20 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:52,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2829 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-02-05 15:30:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2025-02-05 15:30:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.673003802281369) internal successors, (880), 544 states have internal predecessors, (880), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-02-05 15:30:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1082 transitions. [2025-02-05 15:30:52,553 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1082 transitions. Word has length 124 [2025-02-05 15:30:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:52,553 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1082 transitions. [2025-02-05 15:30:52,553 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1082 transitions. [2025-02-05 15:30:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:30:52,556 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:52,557 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:52,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:52,757 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 15:30:52,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:52,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:52,758 INFO L85 PathProgramCache]: Analyzing trace with hash -990028615, now seen corresponding path program 1 times [2025-02-05 15:30:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40112978] [2025-02-05 15:30:52,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:52,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:30:52,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:30:52,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:52,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40112978] [2025-02-05 15:30:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40112978] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903482590] [2025-02-05 15:30:52,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:52,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:52,823 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 15:30:52,825 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 15:30:52,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:30:53,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:30:53,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:53,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:53,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:53,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:30:53,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:53,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903482590] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:53,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:53,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:53,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934210908] [2025-02-05 15:30:53,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:53,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:53,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:53,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:53,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:53,066 INFO L87 Difference]: Start difference. First operand 656 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:53,200 INFO L93 Difference]: Finished difference Result 1307 states and 2166 transitions. [2025-02-05 15:30:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2025-02-05 15:30:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:53,204 INFO L225 Difference]: With dead ends: 1307 [2025-02-05 15:30:53,204 INFO L226 Difference]: Without dead ends: 743 [2025-02-05 15:30:53,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:30:53,207 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 171 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:53,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2701 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2025-02-05 15:30:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 701. [2025-02-05 15:30:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 570 states have (on average 1.6912280701754385) internal successors, (964), 588 states have internal predecessors, (964), 101 states have call successors, (101), 29 states have call predecessors, (101), 29 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2025-02-05 15:30:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1165 transitions. [2025-02-05 15:30:53,227 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1165 transitions. Word has length 125 [2025-02-05 15:30:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:53,228 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1165 transitions. [2025-02-05 15:30:53,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1165 transitions. [2025-02-05 15:30:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-05 15:30:53,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:53,231 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:53,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 15:30:53,431 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 15:30:53,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:53,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -986711114, now seen corresponding path program 1 times [2025-02-05 15:30:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922945128] [2025-02-05 15:30:53,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:53,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:30:53,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:30:53,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:53,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922945128] [2025-02-05 15:30:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922945128] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216171154] [2025-02-05 15:30:53,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:53,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:53,505 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 15:30:53,508 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 15:30:53,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:30:53,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:30:53,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:53,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:53,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:53,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:30:53,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216171154] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:30:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691332592] [2025-02-05 15:30:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:53,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:53,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:53,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:53,770 INFO L87 Difference]: Start difference. First operand 701 states and 1165 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:53,846 INFO L93 Difference]: Finished difference Result 1300 states and 2153 transitions. [2025-02-05 15:30:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2025-02-05 15:30:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:53,851 INFO L225 Difference]: With dead ends: 1300 [2025-02-05 15:30:53,851 INFO L226 Difference]: Without dead ends: 736 [2025-02-05 15:30:53,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 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 15:30:53,854 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 89 mSDsluCounter, 4660 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:53,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5610 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-02-05 15:30:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 714. [2025-02-05 15:30:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.6879310344827587) internal successors, (979), 600 states have internal predecessors, (979), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1184 transitions. [2025-02-05 15:30:53,873 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1184 transitions. Word has length 126 [2025-02-05 15:30:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:53,873 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1184 transitions. [2025-02-05 15:30:53,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1184 transitions. [2025-02-05 15:30:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:30:53,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:53,876 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:53,884 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 15:30:54,076 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 15:30:54,077 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:54,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1021071026, now seen corresponding path program 1 times [2025-02-05 15:30:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:54,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262338760] [2025-02-05 15:30:54,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:54,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:54,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:54,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262338760] [2025-02-05 15:30:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262338760] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728999342] [2025-02-05 15:30:54,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:54,145 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 15:30:54,147 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 15:30:54,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:54,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:54,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:54,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:30:54,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728999342] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:54,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:54,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834993732] [2025-02-05 15:30:54,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:54,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:54,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:54,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:54,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:54,392 INFO L87 Difference]: Start difference. First operand 714 states and 1184 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:54,425 INFO L93 Difference]: Finished difference Result 1354 states and 2249 transitions. [2025-02-05 15:30:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:30:54,425 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2025-02-05 15:30:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:54,428 INFO L225 Difference]: With dead ends: 1354 [2025-02-05 15:30:54,429 INFO L226 Difference]: Without dead ends: 714 [2025-02-05 15:30:54,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 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 15:30:54,431 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 2 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:54,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2838 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2025-02-05 15:30:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2025-02-05 15:30:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.6827586206896552) internal successors, (976), 600 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1181 transitions. [2025-02-05 15:30:54,448 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1181 transitions. Word has length 127 [2025-02-05 15:30:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:54,448 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1181 transitions. [2025-02-05 15:30:54,448 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1181 transitions. [2025-02-05 15:30:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:30:54,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:54,451 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:54,458 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 15:30:54,651 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 15:30:54,652 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:54,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1621547711, now seen corresponding path program 1 times [2025-02-05 15:30:54,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:54,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754633604] [2025-02-05 15:30:54,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:54,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:54,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:54,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:54,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754633604] [2025-02-05 15:30:54,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754633604] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:54,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729154266] [2025-02-05 15:30:54,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:54,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:54,749 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 15:30:54,751 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 15:30:54,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:54,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:54,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:54,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:30:55,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729154266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:55,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:55,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:30:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5620288] [2025-02-05 15:30:55,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:55,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:55,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:55,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:55,015 INFO L87 Difference]: Start difference. First operand 714 states and 1181 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:55,082 INFO L93 Difference]: Finished difference Result 1309 states and 2164 transitions. [2025-02-05 15:30:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:55,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2025-02-05 15:30:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:55,086 INFO L225 Difference]: With dead ends: 1309 [2025-02-05 15:30:55,086 INFO L226 Difference]: Without dead ends: 745 [2025-02-05 15:30:55,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 15:30:55,088 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 100 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5572 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:55,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5572 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2025-02-05 15:30:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 714. [2025-02-05 15:30:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.6827586206896552) internal successors, (976), 600 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1181 transitions. [2025-02-05 15:30:55,104 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1181 transitions. Word has length 127 [2025-02-05 15:30:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:55,104 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1181 transitions. [2025-02-05 15:30:55,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1181 transitions. [2025-02-05 15:30:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:30:55,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:55,107 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:30:55,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:55,307 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 15:30:55,308 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:55,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1936496142, now seen corresponding path program 1 times [2025-02-05 15:30:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:55,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79785685] [2025-02-05 15:30:55,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:55,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:55,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:55,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:55,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79785685] [2025-02-05 15:30:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79785685] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905349163] [2025-02-05 15:30:55,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:55,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:55,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:55,373 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 15:30:55,374 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 15:30:55,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:30:55,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:30:55,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:55,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:55,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:55,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:30:55,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:55,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905349163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:30:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510754265] [2025-02-05 15:30:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:55,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:55,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:55,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:30:55,660 INFO L87 Difference]: Start difference. First operand 714 states and 1181 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:55,771 INFO L93 Difference]: Finished difference Result 1312 states and 2167 transitions. [2025-02-05 15:30:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2025-02-05 15:30:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:55,776 INFO L225 Difference]: With dead ends: 1312 [2025-02-05 15:30:55,776 INFO L226 Difference]: Without dead ends: 748 [2025-02-05 15:30:55,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 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 15:30:55,778 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 96 mSDsluCounter, 5519 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:55,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6454 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2025-02-05 15:30:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 714. [2025-02-05 15:30:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.6827586206896552) internal successors, (976), 600 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1181 transitions. [2025-02-05 15:30:55,795 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1181 transitions. Word has length 127 [2025-02-05 15:30:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:55,795 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1181 transitions. [2025-02-05 15:30:55,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1181 transitions. [2025-02-05 15:30:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 15:30:55,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:55,798 INFO L218 NwaCegarLoop]: trace histogram [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 15:30:55,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:55,998 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 15:30:55,999 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:55,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2120662869, now seen corresponding path program 1 times [2025-02-05 15:30:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223668687] [2025-02-05 15:30:56,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:56,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:30:56,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:30:56,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223668687] [2025-02-05 15:30:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223668687] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701873031] [2025-02-05 15:30:56,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:56,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:56,057 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 15:30:56,058 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 15:30:56,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:30:56,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:30:56,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:56,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:30:56,313 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701873031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:30:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851910329] [2025-02-05 15:30:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:56,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:56,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:56,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:30:56,315 INFO L87 Difference]: Start difference. First operand 714 states and 1181 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:56,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:56,436 INFO L93 Difference]: Finished difference Result 1303 states and 2153 transitions. [2025-02-05 15:30:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:56,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2025-02-05 15:30:56,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:56,440 INFO L225 Difference]: With dead ends: 1303 [2025-02-05 15:30:56,440 INFO L226 Difference]: Without dead ends: 739 [2025-02-05 15:30:56,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 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 15:30:56,442 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 106 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6442 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:56,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6442 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2025-02-05 15:30:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 714. [2025-02-05 15:30:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.6827586206896552) internal successors, (976), 600 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1181 transitions. [2025-02-05 15:30:56,458 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1181 transitions. Word has length 128 [2025-02-05 15:30:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:56,458 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1181 transitions. [2025-02-05 15:30:56,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1181 transitions. [2025-02-05 15:30:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 15:30:56,461 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:56,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:56,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 15:30:56,662 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 15:30:56,662 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:56,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1563988338, now seen corresponding path program 1 times [2025-02-05 15:30:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617459939] [2025-02-05 15:30:56,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:56,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:30:56,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:30:56,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617459939] [2025-02-05 15:30:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617459939] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035244067] [2025-02-05 15:30:56,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:56,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:56,715 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 15:30:56,717 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 15:30:56,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:30:56,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:30:56,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:56,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:30:56,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:56,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035244067] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:56,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:56,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:56,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535463087] [2025-02-05 15:30:56,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:56,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:56,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:56,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:56,954 INFO L87 Difference]: Start difference. First operand 714 states and 1181 transitions. 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:56,997 INFO L93 Difference]: Finished difference Result 1295 states and 2151 transitions. [2025-02-05 15:30:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:56,998 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2025-02-05 15:30:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:57,001 INFO L225 Difference]: With dead ends: 1295 [2025-02-05 15:30:57,002 INFO L226 Difference]: Without dead ends: 735 [2025-02-05 15:30:57,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:30:57,004 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 53 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:57,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2875 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-02-05 15:30:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2025-02-05 15:30:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 600 states have (on average 1.68) internal successors, (1008), 620 states have internal predecessors, (1008), 102 states have call successors, (102), 30 states have call predecessors, (102), 32 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-02-05 15:30:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1213 transitions. [2025-02-05 15:30:57,020 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1213 transitions. Word has length 129 [2025-02-05 15:30:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:57,020 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1213 transitions. [2025-02-05 15:30:57,020 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1213 transitions. [2025-02-05 15:30:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-02-05 15:30:57,023 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:57,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:57,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-05 15:30:57,223 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 15:30:57,224 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:57,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 478144373, now seen corresponding path program 1 times [2025-02-05 15:30:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246287261] [2025-02-05 15:30:57,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:57,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:57,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:57,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:57,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:30:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246287261] [2025-02-05 15:30:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246287261] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321905760] [2025-02-05 15:30:57,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:57,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:57,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:57,306 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 15:30:57,307 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 15:30:57,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:57,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:57,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:57,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:57,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:30:57,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:57,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321905760] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:30:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861024355] [2025-02-05 15:30:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:57,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:30:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:57,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:30:57,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:30:57,583 INFO L87 Difference]: Start difference. First operand 735 states and 1213 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:58,235 INFO L93 Difference]: Finished difference Result 2388 states and 4018 transitions. [2025-02-05 15:30:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2025-02-05 15:30:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:58,243 INFO L225 Difference]: With dead ends: 2388 [2025-02-05 15:30:58,243 INFO L226 Difference]: Without dead ends: 1807 [2025-02-05 15:30:58,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:30:58,247 INFO L435 NwaCegarLoop]: 1654 mSDtfsCounter, 1762 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:58,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 3923 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:30:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2025-02-05 15:30:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1797. [2025-02-05 15:30:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1445 states have (on average 1.6629757785467127) internal successors, (2403), 1493 states have internal predecessors, (2403), 273 states have call successors, (273), 78 states have call predecessors, (273), 78 states have return successors, (321), 264 states have call predecessors, (321), 268 states have call successors, (321) [2025-02-05 15:30:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2997 transitions. [2025-02-05 15:30:58,292 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2997 transitions. Word has length 133 [2025-02-05 15:30:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:58,292 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2997 transitions. [2025-02-05 15:30:58,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:30:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2997 transitions. [2025-02-05 15:30:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-02-05 15:30:58,296 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:58,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:58,304 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 15:30:58,497 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 15:30:58,497 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:58,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2110948372, now seen corresponding path program 1 times [2025-02-05 15:30:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497686101] [2025-02-05 15:30:58,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:58,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:58,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:58,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:58,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:30:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:58,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497686101] [2025-02-05 15:30:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497686101] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:58,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430407550] [2025-02-05 15:30:58,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:58,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:58,548 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 15:30:58,550 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 15:30:58,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:58,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:58,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:58,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:58,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 15:30:58,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:58,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430407550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:58,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:58,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 15:30:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579942379] [2025-02-05 15:30:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:58,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:30:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:58,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:30:58,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:30:58,797 INFO L87 Difference]: Start difference. First operand 1797 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:58,872 INFO L93 Difference]: Finished difference Result 4630 states and 7810 transitions. [2025-02-05 15:30:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:30:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2025-02-05 15:30:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:58,885 INFO L225 Difference]: With dead ends: 4630 [2025-02-05 15:30:58,886 INFO L226 Difference]: Without dead ends: 2988 [2025-02-05 15:30:58,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:30:58,893 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 952 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:58,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1936 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2025-02-05 15:30:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2968. [2025-02-05 15:30:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2387 states have (on average 1.6648512777545035) internal successors, (3974), 2460 states have internal predecessors, (3974), 452 states have call successors, (452), 129 states have call predecessors, (452), 128 states have return successors, (542), 442 states have call predecessors, (542), 445 states have call successors, (542) [2025-02-05 15:30:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4968 transitions. [2025-02-05 15:30:58,970 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4968 transitions. Word has length 133 [2025-02-05 15:30:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:58,971 INFO L471 AbstractCegarLoop]: Abstraction has 2968 states and 4968 transitions. [2025-02-05 15:30:58,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:30:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4968 transitions. [2025-02-05 15:30:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-02-05 15:30:58,974 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:58,974 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:58,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:59,175 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 15:30:59,176 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:59,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1188264789, now seen corresponding path program 1 times [2025-02-05 15:30:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575755827] [2025-02-05 15:30:59,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:59,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:59,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:59,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:59,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:59,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:30:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575755827] [2025-02-05 15:30:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575755827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846731643] [2025-02-05 15:30:59,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:59,234 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 15:30:59,236 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 15:30:59,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-02-05 15:30:59,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-02-05 15:30:59,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:59,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:59,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 15:30:59,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:59,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846731643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:59,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:30:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163587000] [2025-02-05 15:30:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:59,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:59,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:59,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:59,537 INFO L87 Difference]: Start difference. First operand 2968 states and 4968 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:02,965 INFO L93 Difference]: Finished difference Result 7996 states and 13577 transitions. [2025-02-05 15:31:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:31:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2025-02-05 15:31:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:02,987 INFO L225 Difference]: With dead ends: 7996 [2025-02-05 15:31:02,987 INFO L226 Difference]: Without dead ends: 5586 [2025-02-05 15:31:02,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:31:02,999 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 2935 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 6042 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 6687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:02,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 1947 Invalid, 6687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6042 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-05 15:31:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2025-02-05 15:31:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5193. [2025-02-05 15:31:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 4122 states have (on average 1.6278505579815623) internal successors, (6710), 4252 states have internal predecessors, (6710), 828 states have call successors, (828), 240 states have call predecessors, (828), 242 states have return successors, (1065), 808 states have call predecessors, (1065), 817 states have call successors, (1065) [2025-02-05 15:31:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 8603 transitions. [2025-02-05 15:31:03,147 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 8603 transitions. Word has length 133 [2025-02-05 15:31:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:03,147 INFO L471 AbstractCegarLoop]: Abstraction has 5193 states and 8603 transitions. [2025-02-05 15:31:03,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 8603 transitions. [2025-02-05 15:31:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 15:31:03,150 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:03,150 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:03,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-05 15:31:03,351 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 15:31:03,351 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:03,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1261976989, now seen corresponding path program 1 times [2025-02-05 15:31:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015174366] [2025-02-05 15:31:03,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:03,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 15:31:03,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 15:31:03,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:03,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:31:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:03,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015174366] [2025-02-05 15:31:03,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015174366] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:03,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166398351] [2025-02-05 15:31:03,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:03,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:03,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:03,442 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 15:31:03,444 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 15:31:03,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 15:31:03,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 15:31:03,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:03,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:03,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:03,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:31:03,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166398351] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453128748] [2025-02-05 15:31:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:03,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:03,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:03,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:03,711 INFO L87 Difference]: Start difference. First operand 5193 states and 8603 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:04,601 INFO L93 Difference]: Finished difference Result 14390 states and 24163 transitions. [2025-02-05 15:31:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:04,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2025-02-05 15:31:04,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:04,641 INFO L225 Difference]: With dead ends: 14390 [2025-02-05 15:31:04,641 INFO L226 Difference]: Without dead ends: 9350 [2025-02-05 15:31:04,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:04,663 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 1772 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:04,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 3545 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:31:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2025-02-05 15:31:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 9295. [2025-02-05 15:31:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9295 states, 7351 states have (on average 1.6225003400897837) internal successors, (11927), 7594 states have internal predecessors, (11927), 1507 states have call successors, (1507), 432 states have call predecessors, (1507), 436 states have return successors, (1971), 1472 states have call predecessors, (1971), 1491 states have call successors, (1971) [2025-02-05 15:31:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15405 transitions. [2025-02-05 15:31:04,956 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 15405 transitions. Word has length 135 [2025-02-05 15:31:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:04,956 INFO L471 AbstractCegarLoop]: Abstraction has 9295 states and 15405 transitions. [2025-02-05 15:31:04,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 15405 transitions. [2025-02-05 15:31:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:31:04,961 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:04,962 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:04,969 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 15:31:05,162 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 15:31:05,163 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:05,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1565879674, now seen corresponding path program 1 times [2025-02-05 15:31:05,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:05,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682773696] [2025-02-05 15:31:05,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:05,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:31:05,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:31:05,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:05,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:31:05,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:05,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682773696] [2025-02-05 15:31:05,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682773696] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:05,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969093801] [2025-02-05 15:31:05,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:05,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:05,216 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 15:31:05,217 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 15:31:05,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:31:05,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:31:05,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:05,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:05,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:05,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:31:05,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969093801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:05,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:05,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:05,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062936063] [2025-02-05 15:31:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:05,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:05,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:05,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:05,508 INFO L87 Difference]: Start difference. First operand 9295 states and 15405 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:06,355 INFO L93 Difference]: Finished difference Result 17796 states and 29540 transitions. [2025-02-05 15:31:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2025-02-05 15:31:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:06,397 INFO L225 Difference]: With dead ends: 17796 [2025-02-05 15:31:06,397 INFO L226 Difference]: Without dead ends: 9301 [2025-02-05 15:31:06,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:06,490 INFO L435 NwaCegarLoop]: 1627 mSDtfsCounter, 1883 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:06,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 3713 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:31:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2025-02-05 15:31:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9283. [2025-02-05 15:31:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 7339 states have (on average 1.6202479901893991) internal successors, (11891), 7582 states have internal predecessors, (11891), 1507 states have call successors, (1507), 432 states have call predecessors, (1507), 436 states have return successors, (1971), 1472 states have call predecessors, (1971), 1491 states have call successors, (1971) [2025-02-05 15:31:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 15369 transitions. [2025-02-05 15:31:06,705 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 15369 transitions. Word has length 136 [2025-02-05 15:31:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:06,705 INFO L471 AbstractCegarLoop]: Abstraction has 9283 states and 15369 transitions. [2025-02-05 15:31:06,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 15369 transitions. [2025-02-05 15:31:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 15:31:06,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:06,709 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:06,765 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 15:31:06,909 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 15:31:06,910 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:06,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -654316050, now seen corresponding path program 1 times [2025-02-05 15:31:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423318584] [2025-02-05 15:31:06,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:06,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:31:06,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:31:06,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:06,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:31:06,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423318584] [2025-02-05 15:31:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423318584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198148469] [2025-02-05 15:31:06,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:06,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:06,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:06,982 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 15:31:06,986 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 15:31:07,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:31:07,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:31:07,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:07,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:07,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:31:07,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:31:07,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198148469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087203421] [2025-02-05 15:31:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:07,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:07,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:07,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:07,260 INFO L87 Difference]: Start difference. First operand 9283 states and 15369 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:31:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:07,583 INFO L93 Difference]: Finished difference Result 18494 states and 30807 transitions. [2025-02-05 15:31:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:07,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2025-02-05 15:31:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:07,625 INFO L225 Difference]: With dead ends: 18494 [2025-02-05 15:31:07,626 INFO L226 Difference]: Without dead ends: 9367 [2025-02-05 15:31:07,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:07,660 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 0 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:07,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3812 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2025-02-05 15:31:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 9359. [2025-02-05 15:31:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 7402 states have (on average 1.6149689273169414) internal successors, (11954), 7633 states have internal predecessors, (11954), 1507 states have call successors, (1507), 432 states have call predecessors, (1507), 449 states have return successors, (2021), 1497 states have call predecessors, (2021), 1491 states have call successors, (2021) [2025-02-05 15:31:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 15482 transitions. [2025-02-05 15:31:08,029 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 15482 transitions. Word has length 138 [2025-02-05 15:31:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:08,029 INFO L471 AbstractCegarLoop]: Abstraction has 9359 states and 15482 transitions. [2025-02-05 15:31:08,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:31:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 15482 transitions. [2025-02-05 15:31:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-02-05 15:31:08,033 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:08,033 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:08,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-05 15:31:08,233 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 15:31:08,234 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:08,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1249710409, now seen corresponding path program 1 times [2025-02-05 15:31:08,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:08,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230185720] [2025-02-05 15:31:08,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:08,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:08,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-02-05 15:31:08,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-02-05 15:31:08,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:08,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:31:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230185720] [2025-02-05 15:31:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230185720] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124514375] [2025-02-05 15:31:08,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:08,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:08,290 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 15:31:08,292 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 15:31:08,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-02-05 15:31:08,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-02-05 15:31:08,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:08,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:08,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 15:31:08,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 15:31:08,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124514375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:08,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-02-05 15:31:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429063968] [2025-02-05 15:31:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:08,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:31:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:08,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:31:08,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:08,623 INFO L87 Difference]: Start difference. First operand 9359 states and 15482 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:09,335 INFO L93 Difference]: Finished difference Result 20724 states and 34358 transitions. [2025-02-05 15:31:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:31:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 139 [2025-02-05 15:31:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:09,376 INFO L225 Difference]: With dead ends: 20724 [2025-02-05 15:31:09,377 INFO L226 Difference]: Without dead ends: 11508 [2025-02-05 15:31:09,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:31:09,409 INFO L435 NwaCegarLoop]: 1284 mSDtfsCounter, 1700 mSDsluCounter, 4103 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 5387 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:09,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 5387 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:31:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2025-02-05 15:31:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 11269. [2025-02-05 15:31:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 9043 states have (on average 1.5963728851045007) internal successors, (14436), 9286 states have internal predecessors, (14436), 1651 states have call successors, (1651), 546 states have call predecessors, (1651), 574 states have return successors, (2382), 1641 states have call predecessors, (2382), 1630 states have call successors, (2382) [2025-02-05 15:31:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 18469 transitions. [2025-02-05 15:31:09,728 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 18469 transitions. Word has length 139 [2025-02-05 15:31:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:09,728 INFO L471 AbstractCegarLoop]: Abstraction has 11269 states and 18469 transitions. [2025-02-05 15:31:09,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 18469 transitions. [2025-02-05 15:31:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-02-05 15:31:09,732 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:09,733 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:09,744 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 15:31:09,937 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,SelfDestructingSolverStorable23 [2025-02-05 15:31:09,937 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:09,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1745166605, now seen corresponding path program 1 times [2025-02-05 15:31:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343698569] [2025-02-05 15:31:09,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:09,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-02-05 15:31:09,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 15:31:09,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:09,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:31:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343698569] [2025-02-05 15:31:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343698569] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440842048] [2025-02-05 15:31:10,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:10,007 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 15:31:10,011 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 15:31:10,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-02-05 15:31:10,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 15:31:10,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:10,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:10,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:31:10,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:31:10,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:31:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:31:10,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440842048] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:31:10,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:31:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 12 [2025-02-05 15:31:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017960916] [2025-02-05 15:31:10,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:31:10,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:31:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:10,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:31:10,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:31:10,469 INFO L87 Difference]: Start difference. First operand 11269 states and 18469 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-02-05 15:31:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:13,293 INFO L93 Difference]: Finished difference Result 37219 states and 62091 transitions. [2025-02-05 15:31:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 15:31:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 143 [2025-02-05 15:31:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:13,532 INFO L225 Difference]: With dead ends: 37219 [2025-02-05 15:31:13,532 INFO L226 Difference]: Without dead ends: 25929 [2025-02-05 15:31:13,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2025-02-05 15:31:13,623 INFO L435 NwaCegarLoop]: 1849 mSDtfsCounter, 4928 mSDsluCounter, 9827 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4939 SdHoareTripleChecker+Valid, 11676 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:13,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4939 Valid, 11676 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-05 15:31:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25929 states. [2025-02-05 15:31:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25929 to 25320. [2025-02-05 15:31:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25320 states, 20342 states have (on average 1.582931865106676) internal successors, (32200), 20932 states have internal predecessors, (32200), 3717 states have call successors, (3717), 1185 states have call predecessors, (3717), 1260 states have return successors, (5355), 3696 states have call predecessors, (5355), 3692 states have call successors, (5355) [2025-02-05 15:31:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25320 states to 25320 states and 41272 transitions. [2025-02-05 15:31:14,424 INFO L78 Accepts]: Start accepts. Automaton has 25320 states and 41272 transitions. Word has length 143 [2025-02-05 15:31:14,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:14,425 INFO L471 AbstractCegarLoop]: Abstraction has 25320 states and 41272 transitions. [2025-02-05 15:31:14,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-02-05 15:31:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 25320 states and 41272 transitions. [2025-02-05 15:31:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-05 15:31:14,431 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:14,431 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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 15:31:14,439 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 15:31:14,631 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,SelfDestructingSolverStorable24 [2025-02-05 15:31:14,632 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:14,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash -408021080, now seen corresponding path program 1 times [2025-02-05 15:31:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:14,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029826757] [2025-02-05 15:31:14,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:14,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:31:14,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:31:14,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:14,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:31:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029826757] [2025-02-05 15:31:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029826757] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058283649] [2025-02-05 15:31:14,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:14,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:14,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:14,746 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 15:31:14,751 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 15:31:14,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:31:14,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:31:14,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:14,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:14,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:31:14,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:31:15,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058283649] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:15,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:15,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:31:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901356853] [2025-02-05 15:31:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:15,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:31:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:15,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:31:15,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:31:15,040 INFO L87 Difference]: Start difference. First operand 25320 states and 41272 transitions. Second operand has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:16,171 INFO L93 Difference]: Finished difference Result 50872 states and 82884 transitions. [2025-02-05 15:31:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:31:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 160 [2025-02-05 15:31:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:16,260 INFO L225 Difference]: With dead ends: 50872 [2025-02-05 15:31:16,260 INFO L226 Difference]: Without dead ends: 25582 [2025-02-05 15:31:16,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 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 15:31:16,334 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 113 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6412 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:16,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6412 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:31:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25582 states. [2025-02-05 15:31:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25582 to 25320. [2025-02-05 15:31:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25320 states, 20342 states have (on average 1.5828827057319832) internal successors, (32199), 20932 states have internal predecessors, (32199), 3717 states have call successors, (3717), 1185 states have call predecessors, (3717), 1260 states have return successors, (5355), 3696 states have call predecessors, (5355), 3692 states have call successors, (5355) [2025-02-05 15:31:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25320 states to 25320 states and 41271 transitions. [2025-02-05 15:31:17,604 INFO L78 Accepts]: Start accepts. Automaton has 25320 states and 41271 transitions. Word has length 160 [2025-02-05 15:31:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:17,605 INFO L471 AbstractCegarLoop]: Abstraction has 25320 states and 41271 transitions. [2025-02-05 15:31:17,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 25320 states and 41271 transitions. [2025-02-05 15:31:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-05 15:31:17,612 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:17,612 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2025-02-05 15:31:17,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-05 15:31:17,818 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,SelfDestructingSolverStorable25 [2025-02-05 15:31:17,819 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:17,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2057373253, now seen corresponding path program 1 times [2025-02-05 15:31:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:17,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73805355] [2025-02-05 15:31:17,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:17,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-05 15:31:17,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-05 15:31:17,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:17,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:31:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73805355] [2025-02-05 15:31:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73805355] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966559889] [2025-02-05 15:31:17,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:17,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:17,911 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 15:31:17,912 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 15:31:18,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-05 15:31:18,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-05 15:31:18,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:18,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:18,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 15:31:18,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:31:18,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966559889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-02-05 15:31:18,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088467826] [2025-02-05 15:31:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:18,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:31:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:18,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:31:18,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:18,158 INFO L87 Difference]: Start difference. First operand 25320 states and 41271 transitions. Second operand has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:19,000 INFO L93 Difference]: Finished difference Result 50835 states and 82847 transitions. [2025-02-05 15:31:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:31:19,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 161 [2025-02-05 15:31:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:19,119 INFO L225 Difference]: With dead ends: 50835 [2025-02-05 15:31:19,120 INFO L226 Difference]: Without dead ends: 25532 [2025-02-05 15:31:19,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 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 15:31:19,207 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 122 mSDsluCounter, 4589 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:19,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5532 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25532 states. [2025-02-05 15:31:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25532 to 25313. [2025-02-05 15:31:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25313 states, 20335 states have (on average 1.5826899434472583) internal successors, (32184), 20925 states have internal predecessors, (32184), 3717 states have call successors, (3717), 1185 states have call predecessors, (3717), 1260 states have return successors, (5355), 3696 states have call predecessors, (5355), 3692 states have call successors, (5355) [2025-02-05 15:31:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25313 states to 25313 states and 41256 transitions. [2025-02-05 15:31:20,055 INFO L78 Accepts]: Start accepts. Automaton has 25313 states and 41256 transitions. Word has length 161 [2025-02-05 15:31:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:20,055 INFO L471 AbstractCegarLoop]: Abstraction has 25313 states and 41256 transitions. [2025-02-05 15:31:20,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 25313 states and 41256 transitions. [2025-02-05 15:31:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-05 15:31:20,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:20,061 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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 15:31:20,069 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 15:31:20,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-05 15:31:20,262 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:20,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:20,263 INFO L85 PathProgramCache]: Analyzing trace with hash -685495687, now seen corresponding path program 1 times [2025-02-05 15:31:20,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:20,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40496239] [2025-02-05 15:31:20,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:20,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:31:20,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:31:20,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:20,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-05 15:31:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40496239] [2025-02-05 15:31:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40496239] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:31:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:31:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262730729] [2025-02-05 15:31:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:31:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:20,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:31:20,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:20,321 INFO L87 Difference]: Start difference. First operand 25313 states and 41256 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:31:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:21,452 INFO L93 Difference]: Finished difference Result 50581 states and 82457 transitions. [2025-02-05 15:31:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2025-02-05 15:31:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:21,699 INFO L225 Difference]: With dead ends: 50581 [2025-02-05 15:31:21,700 INFO L226 Difference]: Without dead ends: 25285 [2025-02-05 15:31:21,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 15:31:21,850 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 8 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:21,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2829 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25285 states. [2025-02-05 15:31:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25285 to 25285. [2025-02-05 15:31:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25285 states, 20310 states have (on average 1.582520925652388) internal successors, (32141), 20898 states have internal predecessors, (32141), 3716 states have call successors, (3716), 1185 states have call predecessors, (3716), 1258 states have return successors, (5352), 3695 states have call predecessors, (5352), 3691 states have call successors, (5352) [2025-02-05 15:31:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25285 states to 25285 states and 41209 transitions. [2025-02-05 15:31:22,573 INFO L78 Accepts]: Start accepts. Automaton has 25285 states and 41209 transitions. Word has length 162 [2025-02-05 15:31:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:22,573 INFO L471 AbstractCegarLoop]: Abstraction has 25285 states and 41209 transitions. [2025-02-05 15:31:22,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-05 15:31:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25285 states and 41209 transitions. [2025-02-05 15:31:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-05 15:31:22,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:22,578 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2025-02-05 15:31:22,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-05 15:31:22,579 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:22,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 850744348, now seen corresponding path program 1 times [2025-02-05 15:31:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:22,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627576979] [2025-02-05 15:31:22,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:22,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:22,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:31:22,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:31:22,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:22,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:31:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627576979] [2025-02-05 15:31:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627576979] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:31:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:31:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992856897] [2025-02-05 15:31:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:22,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:31:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:22,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:31:22,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:22,665 INFO L87 Difference]: Start difference. First operand 25285 states and 41209 transitions. Second operand has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:23,408 INFO L93 Difference]: Finished difference Result 50706 states and 82646 transitions. [2025-02-05 15:31:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:31:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 162 [2025-02-05 15:31:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:23,508 INFO L225 Difference]: With dead ends: 50706 [2025-02-05 15:31:23,508 INFO L226 Difference]: Without dead ends: 25478 [2025-02-05 15:31:23,751 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 15:31:23,751 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 126 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5539 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:23,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5539 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25478 states. [2025-02-05 15:31:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25478 to 25271. [2025-02-05 15:31:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25271 states, 20296 states have (on average 1.5823314938904218) internal successors, (32115), 20884 states have internal predecessors, (32115), 3716 states have call successors, (3716), 1185 states have call predecessors, (3716), 1258 states have return successors, (5352), 3695 states have call predecessors, (5352), 3691 states have call successors, (5352) [2025-02-05 15:31:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25271 states to 25271 states and 41183 transitions. [2025-02-05 15:31:24,467 INFO L78 Accepts]: Start accepts. Automaton has 25271 states and 41183 transitions. Word has length 162 [2025-02-05 15:31:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:24,468 INFO L471 AbstractCegarLoop]: Abstraction has 25271 states and 41183 transitions. [2025-02-05 15:31:24,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-05 15:31:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25271 states and 41183 transitions. [2025-02-05 15:31:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-05 15:31:24,472 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:24,473 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2025-02-05 15:31:24,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-05 15:31:24,473 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:24,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash 362387254, now seen corresponding path program 1 times [2025-02-05 15:31:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:24,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68801542] [2025-02-05 15:31:24,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:24,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:24,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-05 15:31:24,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-05 15:31:24,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:24,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-05 15:31:24,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68801542] [2025-02-05 15:31:24,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68801542] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:24,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:31:24,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:31:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006252892] [2025-02-05 15:31:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:24,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:31:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:24,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:31:24,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:24,538 INFO L87 Difference]: Start difference. First operand 25271 states and 41183 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:26,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:26,792 INFO L93 Difference]: Finished difference Result 73479 states and 122912 transitions. [2025-02-05 15:31:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:31:26,796 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 163 [2025-02-05 15:31:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:26,982 INFO L225 Difference]: With dead ends: 73479 [2025-02-05 15:31:26,982 INFO L226 Difference]: Without dead ends: 48283 [2025-02-05 15:31:27,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:27,167 INFO L435 NwaCegarLoop]: 1840 mSDtfsCounter, 1819 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:27,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3286 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:31:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48283 states. [2025-02-05 15:31:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48283 to 48209. [2025-02-05 15:31:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48209 states, 38689 states have (on average 1.561374033963142) internal successors, (60408), 39882 states have internal predecessors, (60408), 7042 states have call successors, (7042), 2318 states have call predecessors, (7042), 2477 states have return successors, (10714), 6996 states have call predecessors, (10714), 7005 states have call successors, (10714) [2025-02-05 15:31:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48209 states to 48209 states and 78164 transitions. [2025-02-05 15:31:29,041 INFO L78 Accepts]: Start accepts. Automaton has 48209 states and 78164 transitions. Word has length 163 [2025-02-05 15:31:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:29,041 INFO L471 AbstractCegarLoop]: Abstraction has 48209 states and 78164 transitions. [2025-02-05 15:31:29,041 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 48209 states and 78164 transitions. [2025-02-05 15:31:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 15:31:29,046 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:29,046 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2025-02-05 15:31:29,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-05 15:31:29,047 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:29,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash 757087433, now seen corresponding path program 1 times [2025-02-05 15:31:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:29,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805208562] [2025-02-05 15:31:29,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:29,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 15:31:29,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 15:31:29,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:29,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-05 15:31:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805208562] [2025-02-05 15:31:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805208562] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:29,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:31:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:31:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280916062] [2025-02-05 15:31:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:29,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:31:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:29,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:31:29,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:29,131 INFO L87 Difference]: Start difference. First operand 48209 states and 78164 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:33,879 INFO L93 Difference]: Finished difference Result 142659 states and 238196 transitions. [2025-02-05 15:31:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:31:33,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 164 [2025-02-05 15:31:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:34,406 INFO L225 Difference]: With dead ends: 142659 [2025-02-05 15:31:34,406 INFO L226 Difference]: Without dead ends: 94525 [2025-02-05 15:31:34,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:34,670 INFO L435 NwaCegarLoop]: 1849 mSDtfsCounter, 1828 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:34,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 3302 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 15:31:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94525 states. [2025-02-05 15:31:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94525 to 94417. [2025-02-05 15:31:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94417 states, 75728 states have (on average 1.5462576589900696) internal successors, (117095), 78131 states have internal predecessors, (117095), 13773 states have call successors, (13773), 4584 states have call predecessors, (13773), 4915 states have return successors, (22408), 13677 states have call predecessors, (22408), 13712 states have call successors, (22408) [2025-02-05 15:31:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94417 states to 94417 states and 153276 transitions. [2025-02-05 15:31:38,932 INFO L78 Accepts]: Start accepts. Automaton has 94417 states and 153276 transitions. Word has length 164 [2025-02-05 15:31:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:38,932 INFO L471 AbstractCegarLoop]: Abstraction has 94417 states and 153276 transitions. [2025-02-05 15:31:38,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-05 15:31:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 94417 states and 153276 transitions. [2025-02-05 15:31:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 15:31:38,939 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:38,939 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2025-02-05 15:31:38,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-05 15:31:38,939 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:38,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2103960059, now seen corresponding path program 1 times [2025-02-05 15:31:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472169290] [2025-02-05 15:31:38,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:38,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:38,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:38,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:38,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-05 15:31:39,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472169290] [2025-02-05 15:31:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472169290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:31:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:31:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109057343] [2025-02-05 15:31:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:39,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:31:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:39,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:31:39,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:31:39,032 INFO L87 Difference]: Start difference. First operand 94417 states and 153276 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)