./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product24.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_product24.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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:30:43,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:30:43,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:30:43,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:30:43,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:30:43,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:30:43,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:30:43,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:30:43,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:30:43,645 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:30:43,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:30:43,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:30:43,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:30:43,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:30:43,645 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:30:43,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:30:43,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:30:43,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:30:43,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:30:43,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:30:43,647 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 -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2025-02-05 15:30:43,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:30:43,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:30:43,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:30:43,867 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:30:43,867 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:30:43,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2025-02-05 15:30:45,092 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/357767571/dd77f1badc76449baad358c1770dacfe/FLAG51d1d767a [2025-02-05 15:30:45,459 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:30:45,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2025-02-05 15:30:45,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/357767571/dd77f1badc76449baad358c1770dacfe/FLAG51d1d767a [2025-02-05 15:30:45,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/357767571/dd77f1badc76449baad358c1770dacfe [2025-02-05 15:30:45,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:30:45,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:30:45,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:30:45,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:30:45,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:30:45,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:30:45" (1/1) ... [2025-02-05 15:30:45,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3febce7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:45, skipping insertion in model container [2025-02-05 15:30:45,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:30:45" (1/1) ... [2025-02-05 15:30:45,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:30:45,982 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_product24.cil.c[51490,51503] [2025-02-05 15:30:46,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:30:46,015 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:30:46,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [434] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2095] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2449] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2458] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2549] [2025-02-05 15:30:46,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3210] [2025-02-05 15:30:46,026 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3299] [2025-02-05 15:30:46,026 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3417] [2025-02-05 15:30:46,079 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_product24.cil.c[51490,51503] [2025-02-05 15:30:46,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:30:46,112 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:30:46,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46 WrapperNode [2025-02-05 15:30:46,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:30:46,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:30:46,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:30:46,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:30:46,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,177 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 890 [2025-02-05 15:30:46,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:30:46,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:30:46,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:30:46,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:30:46,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,216 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-02-05 15:30:46,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,236 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:30:46,246 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:30:46,246 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:30:46,246 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:30:46,247 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (1/1) ... [2025-02-05 15:30:46,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:30:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:46,274 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 15:30:46,276 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 15:30:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-02-05 15:30:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-02-05 15:30:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:30:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:30:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:30:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:30:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:30:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:30:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:30:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:30:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:30:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:30:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:30:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-02-05 15:30:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-02-05 15:30:46,417 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:30:46,419 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:30:46,489 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1377-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~15#1; [2025-02-05 15:30:46,490 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1405: #res#1 := ~retValue_acc~16#1; [2025-02-05 15:30:46,494 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: #res := ~retValue_acc~7; [2025-02-05 15:30:46,514 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3336: #res := ~retValue_acc~27; [2025-02-05 15:30:46,594 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2072: #res := ~retValue_acc~19; [2025-02-05 15:30:46,636 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2083: #res := ~retValue_acc~20; [2025-02-05 15:30:46,667 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1258-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~12#1; [2025-02-05 15:30:46,667 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1287: #res#1 := ~retValue_acc~13#1; [2025-02-05 15:30:46,667 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1321-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~14#1; [2025-02-05 15:30:46,673 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1450: #res := ~retValue_acc~18; [2025-02-05 15:30:46,702 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L690-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; [2025-02-05 15:30:46,740 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L853-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~9#1; [2025-02-05 15:30:46,740 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L866-1: isIdle_#res#1 := isIdle_~retValue_acc~10#1; [2025-02-05 15:30:46,744 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3207: #res := ~retValue_acc~26; [2025-02-05 15:30:46,753 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3414: #res := ~retValue_acc~29; [2025-02-05 15:30:46,755 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L528: #res := ~retValue_acc~3; [2025-02-05 15:30:46,757 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: #res := ~retValue_acc~4; [2025-02-05 15:30:46,859 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3375: #res := ~retValue_acc~28; [2025-02-05 15:30:46,873 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L724: #res := ~retValue_acc~6; [2025-02-05 15:30:46,929 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2896: #res := ~retValue_acc~25; [2025-02-05 15:30:47,012 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1218: #res := ~retValue_acc~11; [2025-02-05 15:30:47,054 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3449-1: valid_product_#res#1 := valid_product_~retValue_acc~31#1; [2025-02-05 15:30:47,055 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2446-1: main_#res#1 := main_~retValue_acc~23#1; [2025-02-05 15:30:47,063 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2660: #res := ~retValue_acc~24; [2025-02-05 15:30:47,131 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1436-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-02-05 15:30:47,267 INFO L? ?]: Removed 484 outVars from TransFormulas that were not future-live. [2025-02-05 15:30:47,267 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:30:47,281 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:30:47,281 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:30:47,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:30:47 BoogieIcfgContainer [2025-02-05 15:30:47,281 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:30:47,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:30:47,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:30:47,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:30:47,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:30:45" (1/3) ... [2025-02-05 15:30:47,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72581129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:30:47, skipping insertion in model container [2025-02-05 15:30:47,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:30:46" (2/3) ... [2025-02-05 15:30:47,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72581129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:30:47, skipping insertion in model container [2025-02-05 15:30:47,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:30:47" (3/3) ... [2025-02-05 15:30:47,287 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2025-02-05 15:30:47,296 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:30:47,298 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product24.cil.c that has 30 procedures, 628 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-05 15:30:47,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:30:47,345 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;@33ecbe7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:30:47,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:30:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 485 states have (on average 1.665979381443299) internal successors, (808), 508 states have internal predecessors, (808), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:30:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-05 15:30:47,358 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:47,358 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] [2025-02-05 15:30:47,359 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:47,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1424753532, now seen corresponding path program 1 times [2025-02-05 15:30:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:47,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739936405] [2025-02-05 15:30:47,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:47,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 15:30:47,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 15:30:47,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:47,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:47,793 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 15:30:47,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739936405] [2025-02-05 15:30:47,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739936405] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:47,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588022395] [2025-02-05 15:30:47,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:47,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:47,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:47,800 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 15:30:47,802 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 15:30:47,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 15:30:48,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 15:30:48,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 15:30:48,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:48,093 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 15:30:48,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588022395] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2025-02-05 15:30:48,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567267256] [2025-02-05 15:30:48,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:48,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:30:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:48,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:30:48,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:48,112 INFO L87 Difference]: Start difference. First operand has 629 states, 485 states have (on average 1.665979381443299) internal successors, (808), 508 states have internal predecessors, (808), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:48,174 INFO L93 Difference]: Finished difference Result 1236 states and 2039 transitions. [2025-02-05 15:30:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:30:48,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2025-02-05 15:30:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:48,189 INFO L225 Difference]: With dead ends: 1236 [2025-02-05 15:30:48,189 INFO L226 Difference]: Without dead ends: 616 [2025-02-05 15:30:48,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:48,198 INFO L435 NwaCegarLoop]: 1020 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, 1020 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 15:30:48,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2025-02-05 15:30:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2025-02-05 15:30:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 478 states have (on average 1.6527196652719665) internal successors, (790), 496 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 27 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-02-05 15:30:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1007 transitions. [2025-02-05 15:30:48,254 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1007 transitions. Word has length 83 [2025-02-05 15:30:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:48,255 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 1007 transitions. [2025-02-05 15:30:48,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1007 transitions. [2025-02-05 15:30:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-05 15:30:48,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:48,258 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] [2025-02-05 15:30:48,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:48,459 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 15:30:48,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1300280640, now seen corresponding path program 1 times [2025-02-05 15:30:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214047145] [2025-02-05 15:30:48,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:48,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-05 15:30:48,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-05 15:30:48,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,742 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 15:30:48,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:48,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214047145] [2025-02-05 15:30:48,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214047145] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:48,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437079436] [2025-02-05 15:30:48,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:48,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:48,745 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 15:30:48,746 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 15:30:48,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-05 15:30:48,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-05 15:30:48,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:48,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:48,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:48,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:49,024 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 15:30:49,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437079436] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 15:30:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001233187] [2025-02-05 15:30:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:49,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:49,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:49,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:30:49,026 INFO L87 Difference]: Start difference. First operand 616 states and 1007 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:49,121 INFO L93 Difference]: Finished difference Result 1233 states and 2022 transitions. [2025-02-05 15:30:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2025-02-05 15:30:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:49,128 INFO L225 Difference]: With dead ends: 1233 [2025-02-05 15:30:49,128 INFO L226 Difference]: Without dead ends: 625 [2025-02-05 15:30:49,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:49,133 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 17 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2974 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 15:30:49,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2974 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-02-05 15:30:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2025-02-05 15:30:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 486 states have (on average 1.654320987654321) internal successors, (804), 504 states have internal predecessors, (804), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-02-05 15:30:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1021 transitions. [2025-02-05 15:30:49,164 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1021 transitions. Word has length 85 [2025-02-05 15:30:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:49,164 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 1021 transitions. [2025-02-05 15:30:49,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1021 transitions. [2025-02-05 15:30:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-05 15:30:49,167 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:49,167 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:49,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:30:49,367 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 15:30:49,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:49,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2142045965, now seen corresponding path program 1 times [2025-02-05 15:30:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:49,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595387624] [2025-02-05 15:30:49,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:49,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-05 15:30:49,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-05 15:30:49,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:49,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:49,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595387624] [2025-02-05 15:30:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595387624] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216711622] [2025-02-05 15:30:49,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:49,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:49,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:49,582 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 15:30:49,585 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 15:30:49,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-05 15:30:49,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-05 15:30:49,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:49,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:49,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:49,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:49,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216711622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:49,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-02-05 15:30:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716485358] [2025-02-05 15:30:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:49,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:49,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:49,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:49,839 INFO L87 Difference]: Start difference. First operand 625 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:50,030 INFO L93 Difference]: Finished difference Result 1303 states and 2146 transitions. [2025-02-05 15:30:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:50,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2025-02-05 15:30:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:50,036 INFO L225 Difference]: With dead ends: 1303 [2025-02-05 15:30:50,036 INFO L226 Difference]: Without dead ends: 688 [2025-02-05 15:30:50,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 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 15:30:50,039 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 122 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2869 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 15:30:50,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2869 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-02-05 15:30:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 670. [2025-02-05 15:30:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 530 states have (on average 1.6754716981132076) internal successors, (888), 548 states have internal predecessors, (888), 110 states have call successors, (110), 31 states have call predecessors, (110), 29 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-02-05 15:30:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1105 transitions. [2025-02-05 15:30:50,074 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1105 transitions. Word has length 103 [2025-02-05 15:30:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:50,074 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 1105 transitions. [2025-02-05 15:30:50,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1105 transitions. [2025-02-05 15:30:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-05 15:30:50,076 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:50,076 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] [2025-02-05 15:30:50,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:30:50,276 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 15:30:50,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:50,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1741974298, now seen corresponding path program 1 times [2025-02-05 15:30:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059803922] [2025-02-05 15:30:50,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:50,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-05 15:30:50,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-05 15:30:50,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:50,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,423 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 15:30:50,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059803922] [2025-02-05 15:30:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059803922] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003676019] [2025-02-05 15:30:50,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:50,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:50,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:50,425 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 15:30:50,434 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 15:30:50,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-05 15:30:50,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-05 15:30:50,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:50,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:50,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:50,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:50,697 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 15:30:50,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003676019] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942500558] [2025-02-05 15:30:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:50,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:50,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:50,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:50,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:50,701 INFO L87 Difference]: Start difference. First operand 670 states and 1105 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:50,801 INFO L93 Difference]: Finished difference Result 1355 states and 2237 transitions. [2025-02-05 15:30:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2025-02-05 15:30:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:50,807 INFO L225 Difference]: With dead ends: 1355 [2025-02-05 15:30:50,807 INFO L226 Difference]: Without dead ends: 695 [2025-02-05 15:30:50,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 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 15:30:50,809 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 89 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5876 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 15:30:50,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5876 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2025-02-05 15:30:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 683. [2025-02-05 15:30:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 540 states have (on average 1.6722222222222223) internal successors, (903), 560 states have internal predecessors, (903), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2025-02-05 15:30:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1126 transitions. [2025-02-05 15:30:50,856 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1126 transitions. Word has length 89 [2025-02-05 15:30:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:50,856 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1126 transitions. [2025-02-05 15:30:50,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1126 transitions. [2025-02-05 15:30:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-05 15:30:50,861 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:50,862 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:50,868 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 15:30:51,062 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 15:30:51,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash 953641123, now seen corresponding path program 1 times [2025-02-05 15:30:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064527425] [2025-02-05 15:30:51,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:51,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:30:51,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:30:51,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:51,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:30:51,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064527425] [2025-02-05 15:30:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064527425] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539278699] [2025-02-05 15:30:51,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:51,137 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 15:30:51,139 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 15:30:51,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:30:51,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:30:51,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:51,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:51,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:51,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:30:51,402 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539278699] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191600498] [2025-02-05 15:30:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:51,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:51,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:51,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:51,404 INFO L87 Difference]: Start difference. First operand 683 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:51,466 INFO L93 Difference]: Finished difference Result 1369 states and 2258 transitions. [2025-02-05 15:30:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2025-02-05 15:30:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:51,472 INFO L225 Difference]: With dead ends: 1369 [2025-02-05 15:30:51,472 INFO L226 Difference]: Without dead ends: 694 [2025-02-05 15:30:51,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 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 15:30:51,476 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 12 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2976 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 15:30:51,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2976 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-02-05 15:30:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 692. [2025-02-05 15:30:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6642335766423357) internal successors, (912), 568 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1134 transitions. [2025-02-05 15:30:51,508 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1134 transitions. Word has length 106 [2025-02-05 15:30:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:51,508 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1134 transitions. [2025-02-05 15:30:51,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1134 transitions. [2025-02-05 15:30:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-05 15:30:51,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:51,510 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:51,520 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 15:30:51,711 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 15:30:51,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:51,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash 757219591, now seen corresponding path program 1 times [2025-02-05 15:30:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:51,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069898085] [2025-02-05 15:30:51,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:51,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:30:51,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:30:51,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:51,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069898085] [2025-02-05 15:30:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069898085] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796148806] [2025-02-05 15:30:51,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:51,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:51,855 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 15:30:51,855 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 15:30:51,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:30:52,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:30:52,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:52,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:52,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796148806] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791335786] [2025-02-05 15:30:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:52,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:52,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:52,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:52,128 INFO L87 Difference]: Start difference. First operand 692 states and 1134 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:52,256 INFO L93 Difference]: Finished difference Result 1384 states and 2271 transitions. [2025-02-05 15:30:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2025-02-05 15:30:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:52,261 INFO L225 Difference]: With dead ends: 1384 [2025-02-05 15:30:52,261 INFO L226 Difference]: Without dead ends: 715 [2025-02-05 15:30:52,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 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 15:30:52,264 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 100 mSDsluCounter, 4866 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:52,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5860 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2025-02-05 15:30:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 692. [2025-02-05 15:30:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6642335766423357) internal successors, (912), 568 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1134 transitions. [2025-02-05 15:30:52,288 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1134 transitions. Word has length 106 [2025-02-05 15:30:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:52,289 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1134 transitions. [2025-02-05 15:30:52,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1134 transitions. [2025-02-05 15:30:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 15:30:52,291 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:52,291 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:52,298 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 15:30:52,491 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 15:30:52,492 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:52,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1234829077, now seen corresponding path program 1 times [2025-02-05 15:30:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421931685] [2025-02-05 15:30:52,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:52,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:30:52,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:30:52,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:52,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421931685] [2025-02-05 15:30:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421931685] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589345360] [2025-02-05 15:30:52,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:52,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:52,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:52,619 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 15:30:52,627 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 15:30:52,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:30:52,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:30:52,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:52,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:52,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:52,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:52,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589345360] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:52,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:52,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-05 15:30:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427669138] [2025-02-05 15:30:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:52,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:52,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:52,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:30:52,958 INFO L87 Difference]: Start difference. First operand 692 states and 1134 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:53,054 INFO L93 Difference]: Finished difference Result 1384 states and 2271 transitions. [2025-02-05 15:30:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2025-02-05 15:30:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:53,060 INFO L225 Difference]: With dead ends: 1384 [2025-02-05 15:30:53,060 INFO L226 Difference]: Without dead ends: 715 [2025-02-05 15:30:53,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 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 15:30:53,063 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 111 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5848 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:53,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5848 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2025-02-05 15:30:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 692. [2025-02-05 15:30:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6642335766423357) internal successors, (912), 568 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1134 transitions. [2025-02-05 15:30:53,104 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1134 transitions. Word has length 107 [2025-02-05 15:30:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:53,104 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1134 transitions. [2025-02-05 15:30:53,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:53,104 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1134 transitions. [2025-02-05 15:30:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 15:30:53,108 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:53,109 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:53,116 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 15:30:53,309 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 15:30:53,310 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:53,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2140582302, now seen corresponding path program 1 times [2025-02-05 15:30:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888159049] [2025-02-05 15:30:53,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:53,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:30:53,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:30:53,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:53,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888159049] [2025-02-05 15:30:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888159049] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477954123] [2025-02-05 15:30:53,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:53,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:53,445 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 15:30:53,449 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 15:30:53,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:30:53,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:30:53,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:53,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:53,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:53,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:53,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477954123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:53,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:30:53,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878669355] [2025-02-05 15:30:53,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:53,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:53,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:53,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:30:53,739 INFO L87 Difference]: Start difference. First operand 692 states and 1134 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:53,874 INFO L93 Difference]: Finished difference Result 1387 states and 2275 transitions. [2025-02-05 15:30:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2025-02-05 15:30:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:53,879 INFO L225 Difference]: With dead ends: 1387 [2025-02-05 15:30:53,879 INFO L226 Difference]: Without dead ends: 718 [2025-02-05 15:30:53,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 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 15:30:53,881 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 95 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6791 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 15:30:53,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6791 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-02-05 15:30:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 692. [2025-02-05 15:30:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6642335766423357) internal successors, (912), 568 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1134 transitions. [2025-02-05 15:30:53,903 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1134 transitions. Word has length 107 [2025-02-05 15:30:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:53,903 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1134 transitions. [2025-02-05 15:30:53,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1134 transitions. [2025-02-05 15:30:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-05 15:30:53,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:53,905 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:53,914 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 15:30:54,106 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 15:30:54,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:54,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2143048652, now seen corresponding path program 1 times [2025-02-05 15:30:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965251537] [2025-02-05 15:30:54,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:54,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-05 15:30:54,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-05 15:30:54,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:30:54,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965251537] [2025-02-05 15:30:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965251537] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134330464] [2025-02-05 15:30:54,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:54,230 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 15:30:54,233 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 15:30:54,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-05 15:30:54,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-05 15:30:54,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:54,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:54,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134330464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:54,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:30:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440507404] [2025-02-05 15:30:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:54,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:54,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:54,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:30:54,512 INFO L87 Difference]: Start difference. First operand 692 states and 1134 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:54,637 INFO L93 Difference]: Finished difference Result 1387 states and 2275 transitions. [2025-02-05 15:30:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:54,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2025-02-05 15:30:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:54,643 INFO L225 Difference]: With dead ends: 1387 [2025-02-05 15:30:54,643 INFO L226 Difference]: Without dead ends: 718 [2025-02-05 15:30:54,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 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 15:30:54,646 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 105 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6779 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 15:30:54,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6779 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-02-05 15:30:54,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 692. [2025-02-05 15:30:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6642335766423357) internal successors, (912), 568 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1134 transitions. [2025-02-05 15:30:54,666 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1134 transitions. Word has length 108 [2025-02-05 15:30:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:54,667 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1134 transitions. [2025-02-05 15:30:54,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1134 transitions. [2025-02-05 15:30:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-05 15:30:54,668 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:54,668 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] [2025-02-05 15:30:54,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 15:30:54,869 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 15:30:54,869 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:54,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash 136792417, now seen corresponding path program 1 times [2025-02-05 15:30:54,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477209802] [2025-02-05 15:30:54,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:54,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-05 15:30:54,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-05 15:30:54,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:54,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:54,919 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 15:30:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477209802] [2025-02-05 15:30:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477209802] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207199168] [2025-02-05 15:30:54,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:54,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:54,921 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 15:30:54,923 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 15:30:55,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-05 15:30:55,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-05 15:30:55,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:55,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:55,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:55,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:55,126 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 15:30:55,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207199168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:55,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:55,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:55,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064622856] [2025-02-05 15:30:55,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:55,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:55,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:55,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:55,128 INFO L87 Difference]: Start difference. First operand 692 states and 1134 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:55,188 INFO L93 Difference]: Finished difference Result 1350 states and 2220 transitions. [2025-02-05 15:30:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:55,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2025-02-05 15:30:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:55,193 INFO L225 Difference]: With dead ends: 1350 [2025-02-05 15:30:55,193 INFO L226 Difference]: Without dead ends: 692 [2025-02-05 15:30:55,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 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 15:30:55,196 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2970 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 15:30:55,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2970 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-02-05 15:30:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2025-02-05 15:30:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.655109489051095) internal successors, (907), 568 states have internal predecessors, (907), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2025-02-05 15:30:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1129 transitions. [2025-02-05 15:30:55,214 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1129 transitions. Word has length 93 [2025-02-05 15:30:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:55,214 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1129 transitions. [2025-02-05 15:30:55,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1129 transitions. [2025-02-05 15:30:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-05 15:30:55,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:55,216 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:55,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 15:30:55,416 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 15:30:55,417 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:55,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1715471156, now seen corresponding path program 1 times [2025-02-05 15:30:55,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162566540] [2025-02-05 15:30:55,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:55,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 15:30:55,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 15:30:55,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:55,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:30:55,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:55,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162566540] [2025-02-05 15:30:55,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162566540] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:55,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72843035] [2025-02-05 15:30:55,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:55,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:55,505 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 15:30:55,506 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 15:30:55,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 15:30:55,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 15:30:55,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:55,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:55,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:55,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 15:30:55,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72843035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:55,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:55,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654059266] [2025-02-05 15:30:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:55,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:55,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:55,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:55,739 INFO L87 Difference]: Start difference. First operand 692 states and 1129 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:55,868 INFO L93 Difference]: Finished difference Result 1379 states and 2260 transitions. [2025-02-05 15:30:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:30:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2025-02-05 15:30:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:55,872 INFO L225 Difference]: With dead ends: 1379 [2025-02-05 15:30:55,872 INFO L226 Difference]: Without dead ends: 779 [2025-02-05 15:30:55,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 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 15:30:55,874 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 171 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2842 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 15:30:55,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2842 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2025-02-05 15:30:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 737. [2025-02-05 15:30:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 592 states have (on average 1.6739864864864864) internal successors, (991), 612 states have internal predecessors, (991), 111 states have call successors, (111), 33 states have call predecessors, (111), 33 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2025-02-05 15:30:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1212 transitions. [2025-02-05 15:30:55,890 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1212 transitions. Word has length 110 [2025-02-05 15:30:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:55,890 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1212 transitions. [2025-02-05 15:30:55,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1212 transitions. [2025-02-05 15:30:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-05 15:30:55,891 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:55,891 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] [2025-02-05 15:30:55,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:56,092 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 15:30:56,092 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:56,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash -15950505, now seen corresponding path program 1 times [2025-02-05 15:30:56,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:56,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60536553] [2025-02-05 15:30:56,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:56,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-05 15:30:56,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-05 15:30:56,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,134 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 15:30:56,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60536553] [2025-02-05 15:30:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60536553] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866295639] [2025-02-05 15:30:56,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:56,136 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 15:30:56,141 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 15:30:56,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-05 15:30:56,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-05 15:30:56,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:56,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:56,382 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 15:30:56,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:56,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866295639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:56,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:56,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:30:56,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882680255] [2025-02-05 15:30:56,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:56,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:56,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:56,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:56,384 INFO L87 Difference]: Start difference. First operand 737 states and 1212 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:56,457 INFO L93 Difference]: Finished difference Result 1372 states and 2247 transitions. [2025-02-05 15:30:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2025-02-05 15:30:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:56,462 INFO L225 Difference]: With dead ends: 1372 [2025-02-05 15:30:56,462 INFO L226 Difference]: Without dead ends: 772 [2025-02-05 15:30:56,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 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 15:30:56,465 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 89 mSDsluCounter, 4895 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5892 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 15:30:56,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5892 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-02-05 15:30:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 750. [2025-02-05 15:30:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 602 states have (on average 1.6710963455149501) internal successors, (1006), 624 states have internal predecessors, (1006), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2025-02-05 15:30:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1231 transitions. [2025-02-05 15:30:56,484 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1231 transitions. Word has length 95 [2025-02-05 15:30:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:56,484 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1231 transitions. [2025-02-05 15:30:56,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1231 transitions. [2025-02-05 15:30:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 15:30:56,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:56,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:56,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 15:30:56,686 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 15:30:56,687 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:56,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1439075937, now seen corresponding path program 1 times [2025-02-05 15:30:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:56,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938333744] [2025-02-05 15:30:56,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:56,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:56,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:56,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:30:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938333744] [2025-02-05 15:30:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938333744] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837183004] [2025-02-05 15:30:56,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:56,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:56,770 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 15:30:56,773 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 15:30:56,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:56,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:56,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:56,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:56,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:30:56,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 15:30:57,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837183004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:57,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:30:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259402969] [2025-02-05 15:30:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:57,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:30:57,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:57,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:30:57,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:30:57,017 INFO L87 Difference]: Start difference. First operand 750 states and 1231 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:57,062 INFO L93 Difference]: Finished difference Result 1426 states and 2343 transitions. [2025-02-05 15:30:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:30:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2025-02-05 15:30:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:57,066 INFO L225 Difference]: With dead ends: 1426 [2025-02-05 15:30:57,066 INFO L226 Difference]: Without dead ends: 750 [2025-02-05 15:30:57,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 15:30:57,068 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 2 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2979 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 15:30:57,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2979 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2025-02-05 15:30:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2025-02-05 15:30:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 602 states have (on average 1.6661129568106312) internal successors, (1003), 624 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2025-02-05 15:30:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1228 transitions. [2025-02-05 15:30:57,087 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1228 transitions. Word has length 112 [2025-02-05 15:30:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:57,087 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1228 transitions. [2025-02-05 15:30:57,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:30:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1228 transitions. [2025-02-05 15:30:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 15:30:57,088 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:57,088 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:57,101 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 15:30:57,293 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 15:30:57,293 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:57,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash 644796900, now seen corresponding path program 1 times [2025-02-05 15:30:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844455977] [2025-02-05 15:30:57,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:57,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:57,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:57,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:57,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:30:57,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844455977] [2025-02-05 15:30:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844455977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802985757] [2025-02-05 15:30:57,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:57,353 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 15:30:57,356 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 15:30:57,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:57,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:57,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:57,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:57,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:30:57,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:30:57,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:57,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802985757] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:57,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:57,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:30:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800754238] [2025-02-05 15:30:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:57,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:30:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:57,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:30:57,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:30:57,619 INFO L87 Difference]: Start difference. First operand 750 states and 1228 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:57,694 INFO L93 Difference]: Finished difference Result 1381 states and 2258 transitions. [2025-02-05 15:30:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:30:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2025-02-05 15:30:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:57,699 INFO L225 Difference]: With dead ends: 1381 [2025-02-05 15:30:57,699 INFO L226 Difference]: Without dead ends: 781 [2025-02-05 15:30:57,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 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 15:30:57,702 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 100 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5854 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 15:30:57,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5854 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:30:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2025-02-05 15:30:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 750. [2025-02-05 15:30:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 602 states have (on average 1.6661129568106312) internal successors, (1003), 624 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2025-02-05 15:30:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1228 transitions. [2025-02-05 15:30:57,721 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1228 transitions. Word has length 112 [2025-02-05 15:30:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:57,722 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1228 transitions. [2025-02-05 15:30:57,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1228 transitions. [2025-02-05 15:30:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 15:30:57,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:57,723 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:30:57,735 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 15:30:57,924 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 15:30:57,924 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:57,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1557389651, now seen corresponding path program 1 times [2025-02-05 15:30:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813216252] [2025-02-05 15:30:57,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:57,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:57,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:57,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:57,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:30:58,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:58,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813216252] [2025-02-05 15:30:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813216252] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:58,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109091807] [2025-02-05 15:30:58,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:58,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:58,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:58,012 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 15:30:58,014 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 15:30:58,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:30:58,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:30:58,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:58,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:58,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:30:58,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109091807] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:30:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880426572] [2025-02-05 15:30:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:58,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:58,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:58,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:30:58,277 INFO L87 Difference]: Start difference. First operand 750 states and 1228 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:58,392 INFO L93 Difference]: Finished difference Result 1384 states and 2261 transitions. [2025-02-05 15:30:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:58,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2025-02-05 15:30:58,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:58,397 INFO L225 Difference]: With dead ends: 1384 [2025-02-05 15:30:58,397 INFO L226 Difference]: Without dead ends: 784 [2025-02-05 15:30:58,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 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 15:30:58,400 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 96 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6783 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 15:30:58,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6783 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2025-02-05 15:30:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 750. [2025-02-05 15:30:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 602 states have (on average 1.6661129568106312) internal successors, (1003), 624 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2025-02-05 15:30:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1228 transitions. [2025-02-05 15:30:58,418 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1228 transitions. Word has length 112 [2025-02-05 15:30:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:58,418 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1228 transitions. [2025-02-05 15:30:58,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:30:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1228 transitions. [2025-02-05 15:30:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-05 15:30:58,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:58,419 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] [2025-02-05 15:30:58,427 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 15:30:58,620 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 15:30:58,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:58,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1966847752, now seen corresponding path program 1 times [2025-02-05 15:30:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094619174] [2025-02-05 15:30:58,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:58,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-05 15:30:58,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-05 15:30:58,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:58,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,667 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 15:30:58,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094619174] [2025-02-05 15:30:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094619174] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930136507] [2025-02-05 15:30:58,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:58,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:58,671 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 15:30:58,673 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 15:30:58,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-05 15:30:58,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-05 15:30:58,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:58,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:58,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:30:58,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:58,910 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 15:30:58,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:58,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930136507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:58,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:58,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:30:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111435510] [2025-02-05 15:30:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:58,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:30:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:58,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:30:58,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:30:58,912 INFO L87 Difference]: Start difference. First operand 750 states and 1228 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:59,020 INFO L93 Difference]: Finished difference Result 1375 states and 2247 transitions. [2025-02-05 15:30:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:30:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2025-02-05 15:30:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:59,024 INFO L225 Difference]: With dead ends: 1375 [2025-02-05 15:30:59,024 INFO L226 Difference]: Without dead ends: 775 [2025-02-05 15:30:59,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 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 15:30:59,027 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 106 mSDsluCounter, 5789 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6771 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 15:30:59,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6771 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2025-02-05 15:30:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 750. [2025-02-05 15:30:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 602 states have (on average 1.6661129568106312) internal successors, (1003), 624 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2025-02-05 15:30:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1228 transitions. [2025-02-05 15:30:59,075 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1228 transitions. Word has length 97 [2025-02-05 15:30:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:59,076 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1228 transitions. [2025-02-05 15:30:59,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:30:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1228 transitions. [2025-02-05 15:30:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-05 15:30:59,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:59,077 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] [2025-02-05 15:30:59,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-05 15:30:59,278 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 15:30:59,278 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:30:59,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:30:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2076641122, now seen corresponding path program 1 times [2025-02-05 15:30:59,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:30:59,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909702983] [2025-02-05 15:30:59,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:59,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:30:59,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-05 15:30:59,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-05 15:30:59,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:59,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:59,336 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 15:30:59,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:30:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909702983] [2025-02-05 15:30:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909702983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:30:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924554177] [2025-02-05 15:30:59,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:30:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:30:59,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:30:59,342 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 15:30:59,351 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 15:30:59,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-05 15:30:59,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-05 15:30:59,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:30:59,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:30:59,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:30:59,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:30:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:30:59,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:30:59,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924554177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:30:59,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:30:59,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-02-05 15:30:59,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194824193] [2025-02-05 15:30:59,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:30:59,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:30:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:30:59,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:30:59,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:30:59,754 INFO L87 Difference]: Start difference. First operand 750 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:30:59,846 INFO L93 Difference]: Finished difference Result 1938 states and 3194 transitions. [2025-02-05 15:30:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:30:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2025-02-05 15:30:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:30:59,855 INFO L225 Difference]: With dead ends: 1938 [2025-02-05 15:30:59,855 INFO L226 Difference]: Without dead ends: 1342 [2025-02-05 15:30:59,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 15:30:59,858 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 936 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:30:59,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2023 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:30:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2025-02-05 15:30:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1277. [2025-02-05 15:30:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1025 states have (on average 1.6682926829268292) internal successors, (1710), 1056 states have internal predecessors, (1710), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2025-02-05 15:30:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 2105 transitions. [2025-02-05 15:30:59,895 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 2105 transitions. Word has length 98 [2025-02-05 15:30:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:30:59,896 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 2105 transitions. [2025-02-05 15:30:59,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:30:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 2105 transitions. [2025-02-05 15:30:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-05 15:30:59,899 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:30:59,900 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, 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 15:30:59,907 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 15:31:00,100 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 15:31:00,100 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:00,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash 488738801, now seen corresponding path program 1 times [2025-02-05 15:31:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367429248] [2025-02-05 15:31:00,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:00,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:00,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-05 15:31:00,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 15:31:00,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:00,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 15:31:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367429248] [2025-02-05 15:31:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367429248] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402783348] [2025-02-05 15:31:00,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:00,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:00,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:00,161 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 15:31:00,162 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 15:31:00,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-05 15:31:00,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 15:31:00,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:00,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:00,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:31:00,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:31:00,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402783348] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:00,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:00,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:31:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674112886] [2025-02-05 15:31:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:00,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:00,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:00,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:00,484 INFO L87 Difference]: Start difference. First operand 1277 states and 2105 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:00,570 INFO L93 Difference]: Finished difference Result 3139 states and 5170 transitions. [2025-02-05 15:31:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:00,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2025-02-05 15:31:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:00,577 INFO L225 Difference]: With dead ends: 3139 [2025-02-05 15:31:00,578 INFO L226 Difference]: Without dead ends: 2016 [2025-02-05 15:31:00,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:31:00,581 INFO L435 NwaCegarLoop]: 1341 mSDtfsCounter, 956 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:00,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 4608 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2025-02-05 15:31:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2012. [2025-02-05 15:31:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1615 states have (on average 1.646439628482972) internal successors, (2659), 1649 states have internal predecessors, (2659), 303 states have call successors, (303), 94 states have call predecessors, (303), 93 states have return successors, (335), 284 states have call predecessors, (335), 297 states have call successors, (335) [2025-02-05 15:31:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3297 transitions. [2025-02-05 15:31:00,630 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3297 transitions. Word has length 152 [2025-02-05 15:31:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:00,631 INFO L471 AbstractCegarLoop]: Abstraction has 2012 states and 3297 transitions. [2025-02-05 15:31:00,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3297 transitions. [2025-02-05 15:31:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2025-02-05 15:31:00,635 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:00,636 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:00,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 15:31:00,836 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 15:31:00,836 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:00,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -989539743, now seen corresponding path program 1 times [2025-02-05 15:31:00,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169679601] [2025-02-05 15:31:00,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:00,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 224 statements into 1 equivalence classes. [2025-02-05 15:31:00,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 224 of 224 statements. [2025-02-05 15:31:00,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:00,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2025-02-05 15:31:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169679601] [2025-02-05 15:31:00,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169679601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474103888] [2025-02-05 15:31:00,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:00,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:00,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:00,916 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 15:31:00,921 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 15:31:01,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 224 statements into 1 equivalence classes. [2025-02-05 15:31:01,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 224 of 224 statements. [2025-02-05 15:31:01,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:01,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:01,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:01,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 15:31:01,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474103888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:01,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:01,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:31:01,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258093838] [2025-02-05 15:31:01,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:01,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:01,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:01,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:01,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:01,301 INFO L87 Difference]: Start difference. First operand 2012 states and 3297 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-05 15:31:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:01,747 INFO L93 Difference]: Finished difference Result 3902 states and 6530 transitions. [2025-02-05 15:31:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 224 [2025-02-05 15:31:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:01,755 INFO L225 Difference]: With dead ends: 3902 [2025-02-05 15:31:01,756 INFO L226 Difference]: Without dead ends: 2044 [2025-02-05 15:31:01,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:01,763 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 956 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:01,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2530 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:31:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2025-02-05 15:31:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2025-02-05 15:31:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1643 states have (on average 1.6475958612294583) internal successors, (2707), 1677 states have internal predecessors, (2707), 303 states have call successors, (303), 98 states have call predecessors, (303), 97 states have return successors, (339), 284 states have call predecessors, (339), 297 states have call successors, (339) [2025-02-05 15:31:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3349 transitions. [2025-02-05 15:31:01,823 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3349 transitions. Word has length 224 [2025-02-05 15:31:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:01,824 INFO L471 AbstractCegarLoop]: Abstraction has 2044 states and 3349 transitions. [2025-02-05 15:31:01,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-05 15:31:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3349 transitions. [2025-02-05 15:31:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 15:31:01,829 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:01,829 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, 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 15:31:01,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 15:31:02,031 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 15:31:02,031 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:02,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash 700352149, now seen corresponding path program 1 times [2025-02-05 15:31:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916362427] [2025-02-05 15:31:02,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:02,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:02,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:31:02,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:31:02,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:02,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916362427] [2025-02-05 15:31:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916362427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992672905] [2025-02-05 15:31:02,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:02,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:02,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:02,089 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:02,093 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 15:31:02,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:31:02,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:31:02,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:02,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:02,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:02,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:31:02,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992672905] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:31:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672829620] [2025-02-05 15:31:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:02,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:02,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:02,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:02,421 INFO L87 Difference]: Start difference. First operand 2044 states and 3349 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:03,099 INFO L93 Difference]: Finished difference Result 3966 states and 6622 transitions. [2025-02-05 15:31:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2025-02-05 15:31:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:03,107 INFO L225 Difference]: With dead ends: 3966 [2025-02-05 15:31:03,107 INFO L226 Difference]: Without dead ends: 2076 [2025-02-05 15:31:03,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:03,114 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 940 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:03,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2527 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:31:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2025-02-05 15:31:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2076. [2025-02-05 15:31:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1671 states have (on average 1.6487133453022143) internal successors, (2755), 1705 states have internal predecessors, (2755), 303 states have call successors, (303), 102 states have call predecessors, (303), 101 states have return successors, (343), 284 states have call predecessors, (343), 297 states have call successors, (343) [2025-02-05 15:31:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3401 transitions. [2025-02-05 15:31:03,156 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3401 transitions. Word has length 155 [2025-02-05 15:31:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:03,156 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 3401 transitions. [2025-02-05 15:31:03,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3401 transitions. [2025-02-05 15:31:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-05 15:31:03,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:03,160 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, 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 15:31:03,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 15:31:03,361 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 15:31:03,361 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1482387637, now seen corresponding path program 1 times [2025-02-05 15:31:03,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:03,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178296541] [2025-02-05 15:31:03,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:03,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:31:03,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:31:03,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:03,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:31:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178296541] [2025-02-05 15:31:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178296541] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561813351] [2025-02-05 15:31:03,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:03,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:03,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:03,440 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 15:31:03,443 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 15:31:03,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:31:03,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:31:03,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:03,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:03,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:03,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:31:03,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561813351] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:03,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:03,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:31:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119689711] [2025-02-05 15:31:03,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:03,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:03,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:03,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:03,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:03,753 INFO L87 Difference]: Start difference. First operand 2076 states and 3401 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:04,140 INFO L93 Difference]: Finished difference Result 4030 states and 6714 transitions. [2025-02-05 15:31:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:04,143 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2025-02-05 15:31:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:04,151 INFO L225 Difference]: With dead ends: 4030 [2025-02-05 15:31:04,151 INFO L226 Difference]: Without dead ends: 2108 [2025-02-05 15:31:04,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:04,157 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 931 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:04,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 2524 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:31:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2025-02-05 15:31:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2025-02-05 15:31:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1699 states have (on average 1.6497939964685109) internal successors, (2803), 1733 states have internal predecessors, (2803), 303 states have call successors, (303), 106 states have call predecessors, (303), 105 states have return successors, (347), 284 states have call predecessors, (347), 297 states have call successors, (347) [2025-02-05 15:31:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3453 transitions. [2025-02-05 15:31:04,232 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3453 transitions. Word has length 157 [2025-02-05 15:31:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:04,233 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 3453 transitions. [2025-02-05 15:31:04,233 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3453 transitions. [2025-02-05 15:31:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-05 15:31:04,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:04,238 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, 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 15:31:04,248 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 15:31:04,438 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 15:31:04,439 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:04,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:04,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2077934875, now seen corresponding path program 1 times [2025-02-05 15:31:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22989320] [2025-02-05 15:31:04,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:04,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 15:31:04,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 15:31:04,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:04,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 15:31:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:04,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22989320] [2025-02-05 15:31:04,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22989320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320843986] [2025-02-05 15:31:04,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:04,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:04,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:04,516 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 15:31:04,518 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 15:31:04,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 15:31:04,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 15:31:04,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:04,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:04,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:04,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:31:04,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320843986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:04,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-05 15:31:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312079107] [2025-02-05 15:31:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:04,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:04,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:04,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:04,854 INFO L87 Difference]: Start difference. First operand 2108 states and 3453 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:05,260 INFO L93 Difference]: Finished difference Result 4094 states and 6806 transitions. [2025-02-05 15:31:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2025-02-05 15:31:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:05,273 INFO L225 Difference]: With dead ends: 4094 [2025-02-05 15:31:05,274 INFO L226 Difference]: Without dead ends: 2140 [2025-02-05 15:31:05,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:05,281 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 938 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:05,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 2521 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:31:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2025-02-05 15:31:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2025-02-05 15:31:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1727 states have (on average 1.650839606253619) internal successors, (2851), 1761 states have internal predecessors, (2851), 303 states have call successors, (303), 110 states have call predecessors, (303), 109 states have return successors, (351), 284 states have call predecessors, (351), 297 states have call successors, (351) [2025-02-05 15:31:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3505 transitions. [2025-02-05 15:31:05,336 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3505 transitions. Word has length 159 [2025-02-05 15:31:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:05,336 INFO L471 AbstractCegarLoop]: Abstraction has 2140 states and 3505 transitions. [2025-02-05 15:31:05,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:31:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3505 transitions. [2025-02-05 15:31:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-05 15:31:05,340 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:05,340 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, 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 15:31:05,351 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 15:31:05,540 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 15:31:05,541 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:05,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash 851775211, now seen corresponding path program 1 times [2025-02-05 15:31:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:05,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761901380] [2025-02-05 15:31:05,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:05,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:05,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-05 15:31:05,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-05 15:31:05,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:05,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761901380] [2025-02-05 15:31:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761901380] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903441278] [2025-02-05 15:31:05,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:05,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:05,628 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 15:31:05,629 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 15:31:05,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-05 15:31:05,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-05 15:31:05,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:05,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:05,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:31:05,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:31:05,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903441278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:05,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:05,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:31:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786454479] [2025-02-05 15:31:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:05,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:31:05,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:05,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:31:05,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:31:05,890 INFO L87 Difference]: Start difference. First operand 2140 states and 3505 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:05,943 INFO L93 Difference]: Finished difference Result 4210 states and 6935 transitions. [2025-02-05 15:31:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2025-02-05 15:31:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:05,952 INFO L225 Difference]: With dead ends: 4210 [2025-02-05 15:31:05,952 INFO L226 Difference]: Without dead ends: 2224 [2025-02-05 15:31:05,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 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 15:31:05,957 INFO L435 NwaCegarLoop]: 1026 mSDtfsCounter, 53 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3016 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 15:31:05,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3016 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2025-02-05 15:31:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2224. [2025-02-05 15:31:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1807 states have (on average 1.6485888212506918) internal successors, (2979), 1841 states have internal predecessors, (2979), 303 states have call successors, (303), 114 states have call predecessors, (303), 113 states have return successors, (351), 284 states have call predecessors, (351), 297 states have call successors, (351) [2025-02-05 15:31:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3633 transitions. [2025-02-05 15:31:05,998 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3633 transitions. Word has length 161 [2025-02-05 15:31:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:05,998 INFO L471 AbstractCegarLoop]: Abstraction has 2224 states and 3633 transitions. [2025-02-05 15:31:05,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3633 transitions. [2025-02-05 15:31:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 15:31:06,002 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:06,002 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:06,014 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 15:31:06,203 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 15:31:06,203 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:06,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1047631058, now seen corresponding path program 1 times [2025-02-05 15:31:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:06,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014332996] [2025-02-05 15:31:06,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:06,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:06,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:06,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:06,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014332996] [2025-02-05 15:31:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014332996] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362055690] [2025-02-05 15:31:06,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:06,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:06,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:06,260 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 15:31:06,264 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 15:31:06,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:06,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:06,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:06,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:06,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:06,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:06,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362055690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:06,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568166184] [2025-02-05 15:31:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:06,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:06,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:06,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:06,538 INFO L87 Difference]: Start difference. First operand 2224 states and 3633 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:07,445 INFO L93 Difference]: Finished difference Result 8071 states and 13550 transitions. [2025-02-05 15:31:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2025-02-05 15:31:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:07,471 INFO L225 Difference]: With dead ends: 8071 [2025-02-05 15:31:07,471 INFO L226 Difference]: Without dead ends: 6002 [2025-02-05 15:31:07,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 15:31:07,482 INFO L435 NwaCegarLoop]: 1709 mSDtfsCounter, 1991 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:07,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 4539 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 15:31:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2025-02-05 15:31:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5986. [2025-02-05 15:31:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5986 states, 4829 states have (on average 1.6233174570304412) internal successors, (7839), 4919 states have internal predecessors, (7839), 835 states have call successors, (835), 330 states have call predecessors, (835), 321 states have return successors, (1230), 784 states have call predecessors, (1230), 821 states have call successors, (1230) [2025-02-05 15:31:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5986 states to 5986 states and 9904 transitions. [2025-02-05 15:31:07,616 INFO L78 Accepts]: Start accepts. Automaton has 5986 states and 9904 transitions. Word has length 165 [2025-02-05 15:31:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:07,617 INFO L471 AbstractCegarLoop]: Abstraction has 5986 states and 9904 transitions. [2025-02-05 15:31:07,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5986 states and 9904 transitions. [2025-02-05 15:31:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 15:31:07,623 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:07,623 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:07,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-05 15:31:07,824 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 15:31:07,825 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:07,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash 413948941, now seen corresponding path program 1 times [2025-02-05 15:31:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131581335] [2025-02-05 15:31:07,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:07,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:07,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:07,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:07,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:07,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131581335] [2025-02-05 15:31:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131581335] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697320605] [2025-02-05 15:31:07,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:07,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:07,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:07,938 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 15:31:07,941 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 15:31:08,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:08,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:08,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:08,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:08,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:31:08,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-05 15:31:08,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697320605] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:08,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:08,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 15:31:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388823969] [2025-02-05 15:31:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:08,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:31:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:08,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:31:08,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:31:08,393 INFO L87 Difference]: Start difference. First operand 5986 states and 9904 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:08,566 INFO L93 Difference]: Finished difference Result 15784 states and 26482 transitions. [2025-02-05 15:31:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:31:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2025-02-05 15:31:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:08,606 INFO L225 Difference]: With dead ends: 15784 [2025-02-05 15:31:08,606 INFO L226 Difference]: Without dead ends: 9953 [2025-02-05 15:31:08,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 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 15:31:08,632 INFO L435 NwaCegarLoop]: 1104 mSDtfsCounter, 1002 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:08,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2025-02-05 15:31:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 9885. [2025-02-05 15:31:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9885 states, 7989 states have (on average 1.6272374514958068) internal successors, (13000), 8124 states have internal predecessors, (13000), 1350 states have call successors, (1350), 556 states have call predecessors, (1350), 545 states have return successors, (2019), 1281 states have call predecessors, (2019), 1330 states have call successors, (2019) [2025-02-05 15:31:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9885 states to 9885 states and 16369 transitions. [2025-02-05 15:31:09,045 INFO L78 Accepts]: Start accepts. Automaton has 9885 states and 16369 transitions. Word has length 165 [2025-02-05 15:31:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:09,048 INFO L471 AbstractCegarLoop]: Abstraction has 9885 states and 16369 transitions. [2025-02-05 15:31:09,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9885 states and 16369 transitions. [2025-02-05 15:31:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 15:31:09,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:09,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:09,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-05 15:31:09,257 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 15:31:09,257 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:09,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1521711346, now seen corresponding path program 1 times [2025-02-05 15:31:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458391200] [2025-02-05 15:31:09,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:09,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:09,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:09,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:09,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:09,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:09,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:09,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458391200] [2025-02-05 15:31:09,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458391200] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676539142] [2025-02-05 15:31:09,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:09,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:09,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:09,319 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 15:31:09,319 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 15:31:09,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:31:09,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:31:09,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:09,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:09,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:31:09,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:09,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676539142] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:09,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:31:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839504380] [2025-02-05 15:31:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:09,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:31:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:09,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:31:09,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:31:09,660 INFO L87 Difference]: Start difference. First operand 9885 states and 16369 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-05 15:31:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:13,691 INFO L93 Difference]: Finished difference Result 28097 states and 47571 transitions. [2025-02-05 15:31:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:31:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 165 [2025-02-05 15:31:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:13,768 INFO L225 Difference]: With dead ends: 28097 [2025-02-05 15:31:13,768 INFO L226 Difference]: Without dead ends: 19065 [2025-02-05 15:31:13,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:31:13,815 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 2881 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 6993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:13,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 2190 Invalid, 6993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 6324 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-05 15:31:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19065 states. [2025-02-05 15:31:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19065 to 17843. [2025-02-05 15:31:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17843 states, 14209 states have (on average 1.5774509113941868) internal successors, (22414), 14460 states have internal predecessors, (22414), 2532 states have call successors, (2532), 1088 states have call predecessors, (2532), 1101 states have return successors, (4130), 2411 states have call predecessors, (4130), 2500 states have call successors, (4130) [2025-02-05 15:31:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17843 states to 17843 states and 29076 transitions. [2025-02-05 15:31:14,538 INFO L78 Accepts]: Start accepts. Automaton has 17843 states and 29076 transitions. Word has length 165 [2025-02-05 15:31:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:14,538 INFO L471 AbstractCegarLoop]: Abstraction has 17843 states and 29076 transitions. [2025-02-05 15:31:14,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-05 15:31:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 17843 states and 29076 transitions. [2025-02-05 15:31:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 15:31:14,542 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:14,542 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, 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 15:31:14,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-05 15:31:14,747 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 15:31:14,748 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:14,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -582625162, now seen corresponding path program 1 times [2025-02-05 15:31:14,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:14,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642131766] [2025-02-05 15:31:14,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:14,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:14,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 15:31:14,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 15:31:14,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:14,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642131766] [2025-02-05 15:31:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642131766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592220830] [2025-02-05 15:31:14,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:14,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:14,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:14,813 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 15:31:14,817 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 15:31:14,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 15:31:15,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 15:31:15,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:15,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:15,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:15,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:15,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592220830] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169879645] [2025-02-05 15:31:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:15,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:15,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:15,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:15,107 INFO L87 Difference]: Start difference. First operand 17843 states and 29076 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:16,927 INFO L93 Difference]: Finished difference Result 49930 states and 83031 transitions. [2025-02-05 15:31:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:31:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2025-02-05 15:31:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:17,243 INFO L225 Difference]: With dead ends: 49930 [2025-02-05 15:31:17,243 INFO L226 Difference]: Without dead ends: 32197 [2025-02-05 15:31:17,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 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 15:31:17,337 INFO L435 NwaCegarLoop]: 1153 mSDtfsCounter, 2470 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2473 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:17,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2473 Valid, 3448 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 15:31:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32197 states. [2025-02-05 15:31:18,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32197 to 32007. [2025-02-05 15:31:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32007 states, 25403 states have (on average 1.568869818525371) internal successors, (39854), 25888 states have internal predecessors, (39854), 4608 states have call successors, (4608), 1960 states have call predecessors, (4608), 1995 states have return successors, (7828), 4379 states have call predecessors, (7828), 4562 states have call successors, (7828) [2025-02-05 15:31:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32007 states to 32007 states and 52290 transitions. [2025-02-05 15:31:18,745 INFO L78 Accepts]: Start accepts. Automaton has 32007 states and 52290 transitions. Word has length 167 [2025-02-05 15:31:18,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:18,746 INFO L471 AbstractCegarLoop]: Abstraction has 32007 states and 52290 transitions. [2025-02-05 15:31:18,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 32007 states and 52290 transitions. [2025-02-05 15:31:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 15:31:18,751 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:18,751 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, 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] [2025-02-05 15:31:18,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-05 15:31:18,951 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 15:31:18,952 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:18,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash 800393752, now seen corresponding path program 1 times [2025-02-05 15:31:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597692692] [2025-02-05 15:31:18,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:18,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:31:18,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:31:18,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:18,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597692692] [2025-02-05 15:31:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597692692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668074055] [2025-02-05 15:31:19,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:19,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:19,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:19,034 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:19,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-05 15:31:19,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:31:19,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:31:19,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:19,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:19,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1662 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:31:19,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:19,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668074055] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:19,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:19,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291309729] [2025-02-05 15:31:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:19,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:19,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:19,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:19,384 INFO L87 Difference]: Start difference. First operand 32007 states and 52290 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:21,299 INFO L93 Difference]: Finished difference Result 62307 states and 101979 transitions. [2025-02-05 15:31:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:21,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2025-02-05 15:31:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:21,451 INFO L225 Difference]: With dead ends: 62307 [2025-02-05 15:31:21,452 INFO L226 Difference]: Without dead ends: 32007 [2025-02-05 15:31:21,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 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 15:31:21,761 INFO L435 NwaCegarLoop]: 1704 mSDtfsCounter, 1990 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:21,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 3891 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 15:31:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32007 states. [2025-02-05 15:31:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32007 to 31959. [2025-02-05 15:31:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31959 states, 25355 states have (on average 1.5661605206073752) internal successors, (39710), 25840 states have internal predecessors, (39710), 4608 states have call successors, (4608), 1960 states have call predecessors, (4608), 1995 states have return successors, (7828), 4379 states have call predecessors, (7828), 4562 states have call successors, (7828) [2025-02-05 15:31:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31959 states to 31959 states and 52146 transitions. [2025-02-05 15:31:22,755 INFO L78 Accepts]: Start accepts. Automaton has 31959 states and 52146 transitions. Word has length 168 [2025-02-05 15:31:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:22,756 INFO L471 AbstractCegarLoop]: Abstraction has 31959 states and 52146 transitions. [2025-02-05 15:31:22,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 31959 states and 52146 transitions. [2025-02-05 15:31:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 15:31:22,760 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:22,760 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:22,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-05 15:31:22,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 15:31:22,961 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:22,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -102649248, now seen corresponding path program 1 times [2025-02-05 15:31:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895300270] [2025-02-05 15:31:22,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:22,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:31:22,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:31:22,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:22,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895300270] [2025-02-05 15:31:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895300270] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133327413] [2025-02-05 15:31:23,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:23,016 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:23,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-05 15:31:23,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:31:23,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:31:23,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:23,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:23,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:31:23,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:23,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133327413] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:23,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:23,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:31:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423340328] [2025-02-05 15:31:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:23,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:31:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:23,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:31:23,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:23,291 INFO L87 Difference]: Start difference. First operand 31959 states and 52146 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:24,660 INFO L93 Difference]: Finished difference Result 64064 states and 105444 transitions. [2025-02-05 15:31:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:31:24,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-02-05 15:31:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:25,065 INFO L225 Difference]: With dead ends: 64064 [2025-02-05 15:31:25,066 INFO L226 Difference]: Without dead ends: 32263 [2025-02-05 15:31:25,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 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 15:31:25,195 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 0 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:25,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3992 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:31:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32263 states. [2025-02-05 15:31:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32263 to 32231. [2025-02-05 15:31:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32231 states, 25577 states have (on average 1.561246432341557) internal successors, (39932), 26026 states have internal predecessors, (39932), 4608 states have call successors, (4608), 1960 states have call predecessors, (4608), 2045 states have return successors, (8000), 4465 states have call predecessors, (8000), 4562 states have call successors, (8000) [2025-02-05 15:31:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32231 states to 32231 states and 52540 transitions. [2025-02-05 15:31:26,444 INFO L78 Accepts]: Start accepts. Automaton has 32231 states and 52540 transitions. Word has length 170 [2025-02-05 15:31:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:26,445 INFO L471 AbstractCegarLoop]: Abstraction has 32231 states and 52540 transitions. [2025-02-05 15:31:26,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:31:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 32231 states and 52540 transitions. [2025-02-05 15:31:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-02-05 15:31:26,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:26,450 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:26,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-05 15:31:26,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-05 15:31:26,654 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:26,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1992913174, now seen corresponding path program 1 times [2025-02-05 15:31:26,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:26,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937645585] [2025-02-05 15:31:26,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:26,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:26,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-05 15:31:26,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-05 15:31:26,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:26,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 15:31:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937645585] [2025-02-05 15:31:26,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937645585] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423273082] [2025-02-05 15:31:26,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:26,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:26,709 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:26,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-05 15:31:26,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-05 15:31:26,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-05 15:31:26,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:26,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:26,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 15:31:26,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-05 15:31:27,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423273082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:27,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:27,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-02-05 15:31:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635195553] [2025-02-05 15:31:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:27,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:31:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:27,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:31:27,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:31:27,077 INFO L87 Difference]: Start difference. First operand 32231 states and 52540 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:29,317 INFO L93 Difference]: Finished difference Result 74784 states and 122753 transitions. [2025-02-05 15:31:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:31:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 171 [2025-02-05 15:31:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:29,525 INFO L225 Difference]: With dead ends: 74784 [2025-02-05 15:31:29,525 INFO L226 Difference]: Without dead ends: 42696 [2025-02-05 15:31:29,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 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 15:31:29,751 INFO L435 NwaCegarLoop]: 1358 mSDtfsCounter, 1706 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 5822 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:29,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 5822 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:31:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42696 states. [2025-02-05 15:31:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42696 to 41809. [2025-02-05 15:31:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41809 states, 33775 states have (on average 1.5586972612879348) internal successors, (52645), 34280 states have internal predecessors, (52645), 5186 states have call successors, (5186), 2646 states have call predecessors, (5186), 2847 states have return successors, (9821), 5103 states have call predecessors, (9821), 5125 states have call successors, (9821) [2025-02-05 15:31:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41809 states to 41809 states and 67652 transitions. [2025-02-05 15:31:31,594 INFO L78 Accepts]: Start accepts. Automaton has 41809 states and 67652 transitions. Word has length 171 [2025-02-05 15:31:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:31,594 INFO L471 AbstractCegarLoop]: Abstraction has 41809 states and 67652 transitions. [2025-02-05 15:31:31,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 41809 states and 67652 transitions. [2025-02-05 15:31:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-02-05 15:31:31,599 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:31,599 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, 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] [2025-02-05 15:31:31,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-05 15:31:31,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:31,800 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:31,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1166485068, now seen corresponding path program 1 times [2025-02-05 15:31:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828666397] [2025-02-05 15:31:31,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:31,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-05 15:31:31,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-05 15:31:31,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:31,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 15:31:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828666397] [2025-02-05 15:31:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828666397] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020963418] [2025-02-05 15:31:31,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:31,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:31,861 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:31,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-05 15:31:31,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-05 15:31:32,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-05 15:31:32,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:32,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:32,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:31:32,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:31:32,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:31:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-05 15:31:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020963418] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:31:32,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:31:32,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 12 [2025-02-05 15:31:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541368235] [2025-02-05 15:31:32,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:31:32,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:31:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:32,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:31:32,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:31:32,370 INFO L87 Difference]: Start difference. First operand 41809 states and 67652 transitions. Second operand has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 4 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2025-02-05 15:31:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:38,198 INFO L93 Difference]: Finished difference Result 138478 states and 230329 transitions. [2025-02-05 15:31:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 15:31:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 4 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 175 [2025-02-05 15:31:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:38,724 INFO L225 Difference]: With dead ends: 138478 [2025-02-05 15:31:38,724 INFO L226 Difference]: Without dead ends: 96573 [2025-02-05 15:31:39,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2025-02-05 15:31:39,185 INFO L435 NwaCegarLoop]: 1990 mSDtfsCounter, 5255 mSDsluCounter, 9089 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 11079 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-05 15:31:39,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 11079 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-05 15:31:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96573 states. [2025-02-05 15:31:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96573 to 94234. [2025-02-05 15:31:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94234 states, 76350 states have (on average 1.5454223968565814) internal successors, (117993), 77622 states have internal predecessors, (117993), 11579 states have call successors, (11579), 5829 states have call predecessors, (11579), 6304 states have return successors, (22393), 11315 states have call predecessors, (22393), 11510 states have call successors, (22393) [2025-02-05 15:31:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94234 states to 94234 states and 151965 transitions. [2025-02-05 15:31:43,961 INFO L78 Accepts]: Start accepts. Automaton has 94234 states and 151965 transitions. Word has length 175 [2025-02-05 15:31:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:43,961 INFO L471 AbstractCegarLoop]: Abstraction has 94234 states and 151965 transitions. [2025-02-05 15:31:43,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 4 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2025-02-05 15:31:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 94234 states and 151965 transitions. [2025-02-05 15:31:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-02-05 15:31:43,968 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:43,969 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:43,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-02-05 15:31:44,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:44,170 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:44,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1884541638, now seen corresponding path program 1 times [2025-02-05 15:31:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:44,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383515020] [2025-02-05 15:31:44,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:44,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-02-05 15:31:44,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-02-05 15:31:44,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:44,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-05 15:31:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383515020] [2025-02-05 15:31:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383515020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747117971] [2025-02-05 15:31:44,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:44,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:44,472 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:44,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-05 15:31:44,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-02-05 15:31:44,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-02-05 15:31:44,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:44,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:44,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:31:44,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-05 15:31:45,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:45,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747117971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:45,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:45,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:31:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604973491] [2025-02-05 15:31:45,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:45,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:31:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:45,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:31:45,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:31:45,048 INFO L87 Difference]: Start difference. First operand 94234 states and 151965 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:31:49,686 INFO L93 Difference]: Finished difference Result 189184 states and 304974 transitions. [2025-02-05 15:31:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:31:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 192 [2025-02-05 15:31:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:31:50,179 INFO L225 Difference]: With dead ends: 189184 [2025-02-05 15:31:50,180 INFO L226 Difference]: Without dead ends: 94980 [2025-02-05 15:31:50,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 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 15:31:50,657 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 113 mSDsluCounter, 5761 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6741 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 15:31:50,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6741 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:31:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94980 states. [2025-02-05 15:31:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94980 to 94234. [2025-02-05 15:31:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94234 states, 76350 states have (on average 1.5454092992796333) internal successors, (117992), 77622 states have internal predecessors, (117992), 11579 states have call successors, (11579), 5829 states have call predecessors, (11579), 6304 states have return successors, (22393), 11315 states have call predecessors, (22393), 11510 states have call successors, (22393) [2025-02-05 15:31:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94234 states to 94234 states and 151964 transitions. [2025-02-05 15:31:55,281 INFO L78 Accepts]: Start accepts. Automaton has 94234 states and 151964 transitions. Word has length 192 [2025-02-05 15:31:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:31:55,282 INFO L471 AbstractCegarLoop]: Abstraction has 94234 states and 151964 transitions. [2025-02-05 15:31:55,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:31:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 94234 states and 151964 transitions. [2025-02-05 15:31:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-02-05 15:31:55,288 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:31:55,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:31:55,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-05 15:31:55,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-05 15:31:55,493 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:31:55,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:31:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1550178308, now seen corresponding path program 1 times [2025-02-05 15:31:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:31:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032681870] [2025-02-05 15:31:55,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:55,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:31:55,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-02-05 15:31:55,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-02-05 15:31:55,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:55,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-05 15:31:55,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:31:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032681870] [2025-02-05 15:31:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032681870] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:31:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070446305] [2025-02-05 15:31:55,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:31:55,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:31:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:31:55,583 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:31:55,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-05 15:31:55,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-02-05 15:31:55,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-02-05 15:31:55,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:31:55,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:31:55,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 15:31:55,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:31:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-05 15:31:55,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:31:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070446305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:31:55,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:31:55,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-02-05 15:31:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053655692] [2025-02-05 15:31:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:31:55,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:31:55,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:31:55,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:31:55,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:31:55,858 INFO L87 Difference]: Start difference. First operand 94234 states and 151964 transitions. Second operand has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:32:00,613 INFO L93 Difference]: Finished difference Result 189059 states and 304849 transitions. [2025-02-05 15:32:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:32:00,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 193 [2025-02-05 15:32:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:32:01,296 INFO L225 Difference]: With dead ends: 189059 [2025-02-05 15:32:01,297 INFO L226 Difference]: Without dead ends: 94842 [2025-02-05 15:32:01,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:32:01,835 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 122 mSDsluCounter, 4824 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5814 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 15:32:01,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5814 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:32:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94842 states. [2025-02-05 15:32:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94842 to 94227. [2025-02-05 15:32:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94227 states, 76343 states have (on average 1.5453545184234312) internal successors, (117977), 77615 states have internal predecessors, (117977), 11579 states have call successors, (11579), 5829 states have call predecessors, (11579), 6304 states have return successors, (22393), 11315 states have call predecessors, (22393), 11510 states have call successors, (22393) [2025-02-05 15:32:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94227 states to 94227 states and 151949 transitions. [2025-02-05 15:32:05,988 INFO L78 Accepts]: Start accepts. Automaton has 94227 states and 151949 transitions. Word has length 193 [2025-02-05 15:32:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:32:05,988 INFO L471 AbstractCegarLoop]: Abstraction has 94227 states and 151949 transitions. [2025-02-05 15:32:05,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:32:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 94227 states and 151949 transitions. [2025-02-05 15:32:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-02-05 15:32:05,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:32:05,996 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:32:06,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-02-05 15:32:06,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:32:06,201 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:32:06,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:32:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1858776341, now seen corresponding path program 1 times [2025-02-05 15:32:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:32:06,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047227558] [2025-02-05 15:32:06,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:32:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:32:06,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-02-05 15:32:06,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-02-05 15:32:06,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:32:06,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:32:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-02-05 15:32:06,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:32:06,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047227558] [2025-02-05 15:32:06,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047227558] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:32:06,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:32:06,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:32:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130525435] [2025-02-05 15:32:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:32:06,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:32:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:32:06,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:32:06,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:32:06,283 INFO L87 Difference]: Start difference. First operand 94227 states and 151949 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)