./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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_spec3_product03.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:46:04,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:46:04,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:46:04,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:46:04,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:46:04,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:46:04,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:46:04,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:46:04,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:46:04,097 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:46:04,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:46:04,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:46:04,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:46:04,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:46:04,098 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:46:04,099 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:04,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:46:04,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:04,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:46:04,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:46:04,100 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 -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2025-01-09 03:46:04,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:46:04,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:46:04,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:46:04,352 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:46:04,353 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:46:04,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2025-01-09 03:46:05,518 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3ccfcfb8/44b3135b6fe64eb9a63563a786fb0e5e/FLAGaa69084d4 [2025-01-09 03:46:05,878 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:46:05,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2025-01-09 03:46:05,904 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3ccfcfb8/44b3135b6fe64eb9a63563a786fb0e5e/FLAGaa69084d4 [2025-01-09 03:46:06,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3ccfcfb8/44b3135b6fe64eb9a63563a786fb0e5e [2025-01-09 03:46:06,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:46:06,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:46:06,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:46:06,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:46:06,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:46:06,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06, skipping insertion in model container [2025-01-09 03:46:06,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:46:06,429 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_spec3_product03.cil.c[33356,33369] [2025-01-09 03:46:06,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:46:06,521 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:46:06,528 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2025-01-09 03:46:06,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2025-01-09 03:46:06,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [514] [2025-01-09 03:46:06,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [704] [2025-01-09 03:46:06,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1371] [2025-01-09 03:46:06,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1389] [2025-01-09 03:46:06,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1427] [2025-01-09 03:46:06,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1436] [2025-01-09 03:46:06,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2938] [2025-01-09 03:46:06,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3057] [2025-01-09 03:46:06,586 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_spec3_product03.cil.c[33356,33369] [2025-01-09 03:46:06,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:46:06,661 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:46:06,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06 WrapperNode [2025-01-09 03:46:06,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:46:06,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:46:06,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:46:06,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:46:06,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,742 INFO L138 Inliner]: procedures = 90, calls = 342, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 1039 [2025-01-09 03:46:06,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:46:06,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:46:06,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:46:06,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:46:06,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,787 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]. [2025-01-09 03:46:06,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,803 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:46:06,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:46:06,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:46:06,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:46:06,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (1/1) ... [2025-01-09 03:46:06,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:06,869 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) [2025-01-09 03:46:06,872 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 [2025-01-09 03:46:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:46:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-01-09 03:46:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-01-09 03:46:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-01-09 03:46:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-01-09 03:46:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-01-09 03:46:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-01-09 03:46:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-01-09 03:46:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-01-09 03:46:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-01-09 03:46:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-01-09 03:46:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-01-09 03:46:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-01-09 03:46:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-01-09 03:46:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-01-09 03:46:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-01-09 03:46:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-01-09 03:46:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-01-09 03:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:46:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-01-09 03:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-01-09 03:46:07,044 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:46:07,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:46:07,943 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2025-01-09 03:46:07,943 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:46:07,963 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:46:07,963 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 03:46:07,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:46:07 BoogieIcfgContainer [2025-01-09 03:46:07,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:46:07,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:46:07,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:46:07,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:46:07,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:46:06" (1/3) ... [2025-01-09 03:46:07,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abbf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:46:07, skipping insertion in model container [2025-01-09 03:46:07,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:06" (2/3) ... [2025-01-09 03:46:07,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abbf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:46:07, skipping insertion in model container [2025-01-09 03:46:07,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:46:07" (3/3) ... [2025-01-09 03:46:07,970 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2025-01-09 03:46:07,980 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:46:07,982 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product03.cil.c that has 27 procedures, 573 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 03:46:08,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:46:08,042 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;@1b7e9079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:46:08,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:46:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 573 states, 439 states have (on average 1.671981776765376) internal successors, (734), 457 states have internal predecessors, (734), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2025-01-09 03:46:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-01-09 03:46:08,072 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:08,074 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:08,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:08,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 30758244, now seen corresponding path program 1 times [2025-01-09 03:46:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452762693] [2025-01-09 03:46:08,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:08,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:08,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-01-09 03:46:08,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-01-09 03:46:08,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:08,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:08,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452762693] [2025-01-09 03:46:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452762693] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:08,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089533770] [2025-01-09 03:46:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:08,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:08,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:08,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:08,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:08,749 INFO L87 Difference]: Start difference. First operand has 573 states, 439 states have (on average 1.671981776765376) internal successors, (734), 457 states have internal predecessors, (734), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:08,937 INFO L93 Difference]: Finished difference Result 1143 states and 1904 transitions. [2025-01-09 03:46:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:08,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2025-01-09 03:46:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:08,960 INFO L225 Difference]: With dead ends: 1143 [2025-01-09 03:46:08,961 INFO L226 Difference]: Without dead ends: 578 [2025-01-09 03:46:08,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:46:08,969 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 91 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:08,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5500 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-01-09 03:46:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 576. [2025-01-09 03:46:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 442 states have (on average 1.665158371040724) internal successors, (736), 460 states have internal predecessors, (736), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2025-01-09 03:46:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 949 transitions. [2025-01-09 03:46:09,056 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 949 transitions. Word has length 113 [2025-01-09 03:46:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:09,057 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 949 transitions. [2025-01-09 03:46:09,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 949 transitions. [2025-01-09 03:46:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-09 03:46:09,062 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:09,062 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:09,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:46:09,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:09,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1929290732, now seen corresponding path program 1 times [2025-01-09 03:46:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:09,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962497663] [2025-01-09 03:46:09,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:09,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-01-09 03:46:09,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 03:46:09,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:09,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:09,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962497663] [2025-01-09 03:46:09,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962497663] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:09,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:09,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:09,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636211791] [2025-01-09 03:46:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:09,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:09,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:09,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:09,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:09,234 INFO L87 Difference]: Start difference. First operand 576 states and 949 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:09,309 INFO L93 Difference]: Finished difference Result 1134 states and 1879 transitions. [2025-01-09 03:46:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2025-01-09 03:46:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:09,316 INFO L225 Difference]: With dead ends: 1134 [2025-01-09 03:46:09,317 INFO L226 Difference]: Without dead ends: 552 [2025-01-09 03:46:09,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:46:09,320 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 14 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:09,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2752 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-01-09 03:46:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-01-09 03:46:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 421 states have (on average 1.655581947743468) internal successors, (697), 437 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 906 transitions. [2025-01-09 03:46:09,352 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 906 transitions. Word has length 114 [2025-01-09 03:46:09,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:09,353 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 906 transitions. [2025-01-09 03:46:09,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 906 transitions. [2025-01-09 03:46:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-09 03:46:09,359 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:09,359 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:09,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:46:09,359 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:09,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1049164654, now seen corresponding path program 1 times [2025-01-09 03:46:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:09,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329765818] [2025-01-09 03:46:09,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:09,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-01-09 03:46:09,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 03:46:09,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:09,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:09,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329765818] [2025-01-09 03:46:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329765818] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:09,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007286627] [2025-01-09 03:46:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:09,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:09,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:09,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:09,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:09,624 INFO L87 Difference]: Start difference. First operand 552 states and 906 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:09,715 INFO L93 Difference]: Finished difference Result 1097 states and 1811 transitions. [2025-01-09 03:46:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:09,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2025-01-09 03:46:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:09,721 INFO L225 Difference]: With dead ends: 1097 [2025-01-09 03:46:09,721 INFO L226 Difference]: Without dead ends: 546 [2025-01-09 03:46:09,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:46:09,725 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 77 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:09,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5300 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2025-01-09 03:46:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2025-01-09 03:46:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 415 states have (on average 1.6481927710843374) internal successors, (684), 431 states have internal predecessors, (684), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 893 transitions. [2025-01-09 03:46:09,749 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 893 transitions. Word has length 114 [2025-01-09 03:46:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:09,749 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 893 transitions. [2025-01-09 03:46:09,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 893 transitions. [2025-01-09 03:46:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-09 03:46:09,753 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:09,753 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:09,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:46:09,753 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:09,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 591954888, now seen corresponding path program 1 times [2025-01-09 03:46:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065943270] [2025-01-09 03:46:09,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:09,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 03:46:09,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 03:46:09,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:09,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065943270] [2025-01-09 03:46:09,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065943270] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:09,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:09,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896032415] [2025-01-09 03:46:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:09,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:09,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:09,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:09,956 INFO L87 Difference]: Start difference. First operand 546 states and 893 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:10,043 INFO L93 Difference]: Finished difference Result 1085 states and 1785 transitions. [2025-01-09 03:46:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2025-01-09 03:46:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:10,050 INFO L225 Difference]: With dead ends: 1085 [2025-01-09 03:46:10,050 INFO L226 Difference]: Without dead ends: 540 [2025-01-09 03:46:10,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:46:10,053 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 63 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5240 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:10,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5240 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-01-09 03:46:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2025-01-09 03:46:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 409 states have (on average 1.6405867970660146) internal successors, (671), 425 states have internal predecessors, (671), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 880 transitions. [2025-01-09 03:46:10,076 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 880 transitions. Word has length 115 [2025-01-09 03:46:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:10,076 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 880 transitions. [2025-01-09 03:46:10,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 880 transitions. [2025-01-09 03:46:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-01-09 03:46:10,080 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:10,080 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:10,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 03:46:10,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:10,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1635283922, now seen corresponding path program 1 times [2025-01-09 03:46:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:10,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386267279] [2025-01-09 03:46:10,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:10,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-01-09 03:46:10,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-01-09 03:46:10,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:10,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386267279] [2025-01-09 03:46:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386267279] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928535486] [2025-01-09 03:46:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:10,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:10,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:10,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:10,267 INFO L87 Difference]: Start difference. First operand 540 states and 880 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:10,333 INFO L93 Difference]: Finished difference Result 1073 states and 1759 transitions. [2025-01-09 03:46:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2025-01-09 03:46:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:10,338 INFO L225 Difference]: With dead ends: 1073 [2025-01-09 03:46:10,338 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:10,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:46:10,342 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 49 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:10,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5180 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6327543424317619) internal successors, (658), 419 states have internal predecessors, (658), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 867 transitions. [2025-01-09 03:46:10,366 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 867 transitions. Word has length 116 [2025-01-09 03:46:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:10,367 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 867 transitions. [2025-01-09 03:46:10,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 867 transitions. [2025-01-09 03:46:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-01-09 03:46:10,369 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:10,369 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:10,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:46:10,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:10,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1912022701, now seen corresponding path program 1 times [2025-01-09 03:46:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558245225] [2025-01-09 03:46:10,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:10,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-01-09 03:46:10,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-01-09 03:46:10,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:10,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558245225] [2025-01-09 03:46:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558245225] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:10,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:10,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656606160] [2025-01-09 03:46:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:10,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:10,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:10,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:10,521 INFO L87 Difference]: Start difference. First operand 534 states and 867 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:10,577 INFO L93 Difference]: Finished difference Result 1061 states and 1733 transitions. [2025-01-09 03:46:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2025-01-09 03:46:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:10,580 INFO L225 Difference]: With dead ends: 1061 [2025-01-09 03:46:10,580 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:10,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:46:10,584 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 24 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5132 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:10,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5132 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.630272952853598) internal successors, (657), 419 states have internal predecessors, (657), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 866 transitions. [2025-01-09 03:46:10,603 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 866 transitions. Word has length 116 [2025-01-09 03:46:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:10,603 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 866 transitions. [2025-01-09 03:46:10,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 866 transitions. [2025-01-09 03:46:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 03:46:10,605 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:10,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:10,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 03:46:10,605 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:10,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1950675500, now seen corresponding path program 1 times [2025-01-09 03:46:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14293295] [2025-01-09 03:46:10,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:10,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 03:46:10,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 03:46:10,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:10,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:10,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14293295] [2025-01-09 03:46:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14293295] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:10,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:10,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:10,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068340588] [2025-01-09 03:46:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:10,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:10,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:10,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:10,719 INFO L87 Difference]: Start difference. First operand 534 states and 866 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:10,768 INFO L93 Difference]: Finished difference Result 1052 states and 1718 transitions. [2025-01-09 03:46:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2025-01-09 03:46:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:10,772 INFO L225 Difference]: With dead ends: 1052 [2025-01-09 03:46:10,772 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:10,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:10,780 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 15 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:10,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2538 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6277915632754343) internal successors, (656), 419 states have internal predecessors, (656), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 865 transitions. [2025-01-09 03:46:10,805 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 865 transitions. Word has length 117 [2025-01-09 03:46:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:10,806 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 865 transitions. [2025-01-09 03:46:10,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 865 transitions. [2025-01-09 03:46:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 03:46:10,809 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:10,809 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:10,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 03:46:10,810 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:10,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -940539918, now seen corresponding path program 1 times [2025-01-09 03:46:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002372634] [2025-01-09 03:46:10,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:10,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 03:46:10,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 03:46:10,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:10,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:10,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:10,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002372634] [2025-01-09 03:46:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002372634] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:10,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830284299] [2025-01-09 03:46:10,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:10,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:10,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:10,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:10,923 INFO L87 Difference]: Start difference. First operand 534 states and 865 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:10,966 INFO L93 Difference]: Finished difference Result 1052 states and 1716 transitions. [2025-01-09 03:46:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:10,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2025-01-09 03:46:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:10,973 INFO L225 Difference]: With dead ends: 1052 [2025-01-09 03:46:10,973 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:10,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:10,976 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 14 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:10,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2540 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6253101736972704) internal successors, (655), 419 states have internal predecessors, (655), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 864 transitions. [2025-01-09 03:46:10,994 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 864 transitions. Word has length 118 [2025-01-09 03:46:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:10,994 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 864 transitions. [2025-01-09 03:46:10,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 864 transitions. [2025-01-09 03:46:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-09 03:46:10,996 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:10,996 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:10,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 03:46:10,996 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:10,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2125148559, now seen corresponding path program 1 times [2025-01-09 03:46:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:10,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501425793] [2025-01-09 03:46:10,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:11,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-01-09 03:46:11,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 03:46:11,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:11,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501425793] [2025-01-09 03:46:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501425793] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702204253] [2025-01-09 03:46:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:11,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:11,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:11,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:11,103 INFO L87 Difference]: Start difference. First operand 534 states and 864 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:11,138 INFO L93 Difference]: Finished difference Result 1052 states and 1714 transitions. [2025-01-09 03:46:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2025-01-09 03:46:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:11,144 INFO L225 Difference]: With dead ends: 1052 [2025-01-09 03:46:11,144 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:11,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:11,147 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 13 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:11,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2542 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6228287841191067) internal successors, (654), 419 states have internal predecessors, (654), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 863 transitions. [2025-01-09 03:46:11,164 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 863 transitions. Word has length 119 [2025-01-09 03:46:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:11,165 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 863 transitions. [2025-01-09 03:46:11,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 863 transitions. [2025-01-09 03:46:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-01-09 03:46:11,167 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:11,167 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:11,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 03:46:11,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:11,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1944554665, now seen corresponding path program 1 times [2025-01-09 03:46:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:11,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242491237] [2025-01-09 03:46:11,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:11,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-01-09 03:46:11,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-01-09 03:46:11,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:11,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242491237] [2025-01-09 03:46:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242491237] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205279020] [2025-01-09 03:46:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:11,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:11,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:11,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:11,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:11,257 INFO L87 Difference]: Start difference. First operand 534 states and 863 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:11,294 INFO L93 Difference]: Finished difference Result 1052 states and 1712 transitions. [2025-01-09 03:46:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:11,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2025-01-09 03:46:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:11,298 INFO L225 Difference]: With dead ends: 1052 [2025-01-09 03:46:11,299 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 03:46:11,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:11,301 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 12 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:11,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 03:46:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-01-09 03:46:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.620347394540943) internal successors, (653), 419 states have internal predecessors, (653), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2025-01-09 03:46:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 862 transitions. [2025-01-09 03:46:11,320 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 862 transitions. Word has length 120 [2025-01-09 03:46:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 862 transitions. [2025-01-09 03:46:11,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 03:46:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 862 transitions. [2025-01-09 03:46:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-01-09 03:46:11,322 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:11,322 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:11,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 03:46:11,322 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:11,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1902612150, now seen corresponding path program 1 times [2025-01-09 03:46:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:11,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524928499] [2025-01-09 03:46:11,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:11,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 03:46:11,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 03:46:11,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:11,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:46:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524928499] [2025-01-09 03:46:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524928499] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858193834] [2025-01-09 03:46:11,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:11,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:11,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:11,512 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) [2025-01-09 03:46:11,513 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 [2025-01-09 03:46:11,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 03:46:11,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 03:46:11,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:11,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:11,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 03:46:11,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:46:11,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858193834] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:11,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:11,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-01-09 03:46:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636742851] [2025-01-09 03:46:11,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:11,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:11,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:11,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:11,931 INFO L87 Difference]: Start difference. First operand 534 states and 862 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:11,985 INFO L93 Difference]: Finished difference Result 1513 states and 2474 transitions. [2025-01-09 03:46:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2025-01-09 03:46:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:11,991 INFO L225 Difference]: With dead ends: 1513 [2025-01-09 03:46:11,991 INFO L226 Difference]: Without dead ends: 997 [2025-01-09 03:46:11,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:11,994 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 786 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:11,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2283 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2025-01-09 03:46:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 982. [2025-01-09 03:46:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 748 states have (on average 1.6336898395721926) internal successors, (1222), 779 states have internal predecessors, (1222), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2025-01-09 03:46:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1598 transitions. [2025-01-09 03:46:12,030 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1598 transitions. Word has length 121 [2025-01-09 03:46:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:12,031 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1598 transitions. [2025-01-09 03:46:12,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1598 transitions. [2025-01-09 03:46:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-09 03:46:12,035 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:12,035 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:12,066 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 [2025-01-09 03:46:12,239 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,SelfDestructingSolverStorable10 [2025-01-09 03:46:12,240 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:12,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1347206015, now seen corresponding path program 1 times [2025-01-09 03:46:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648405894] [2025-01-09 03:46:12,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:12,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 03:46:12,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 03:46:12,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:12,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:46:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648405894] [2025-01-09 03:46:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648405894] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242874512] [2025-01-09 03:46:12,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:12,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:12,406 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) [2025-01-09 03:46:12,407 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 [2025-01-09 03:46:12,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 03:46:12,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 03:46:12,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:12,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:12,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 03:46:12,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:46:12,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242874512] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:12,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-01-09 03:46:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122363982] [2025-01-09 03:46:12,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:12,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:12,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:12,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:12,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:12,828 INFO L87 Difference]: Start difference. First operand 982 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:12,929 INFO L93 Difference]: Finished difference Result 2409 states and 3948 transitions. [2025-01-09 03:46:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:12,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2025-01-09 03:46:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:12,941 INFO L225 Difference]: With dead ends: 2409 [2025-01-09 03:46:12,942 INFO L226 Difference]: Without dead ends: 1445 [2025-01-09 03:46:12,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:12,949 INFO L435 NwaCegarLoop]: 1461 mSDtfsCounter, 786 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:12,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2218 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2025-01-09 03:46:13,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1397. [2025-01-09 03:46:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1066 states have (on average 1.646341463414634) internal successors, (1755), 1112 states have internal predecessors, (1755), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2025-01-09 03:46:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2292 transitions. [2025-01-09 03:46:13,020 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2292 transitions. Word has length 122 [2025-01-09 03:46:13,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:13,020 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2292 transitions. [2025-01-09 03:46:13,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 03:46:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2292 transitions. [2025-01-09 03:46:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 03:46:13,026 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:13,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:13,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:46:13,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:13,227 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:13,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1266616979, now seen corresponding path program 1 times [2025-01-09 03:46:13,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:13,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349075527] [2025-01-09 03:46:13,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:13,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 03:46:13,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 03:46:13,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:13,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349075527] [2025-01-09 03:46:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349075527] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393266551] [2025-01-09 03:46:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:13,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:13,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:13,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:13,389 INFO L87 Difference]: Start difference. First operand 1397 states and 2292 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:46:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:13,934 INFO L93 Difference]: Finished difference Result 4127 states and 6877 transitions. [2025-01-09 03:46:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2025-01-09 03:46:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:13,952 INFO L225 Difference]: With dead ends: 4127 [2025-01-09 03:46:13,953 INFO L226 Difference]: Without dead ends: 2748 [2025-01-09 03:46:13,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:13,961 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 851 mSDsluCounter, 3460 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:13,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 4421 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:46:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2025-01-09 03:46:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2701. [2025-01-09 03:46:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2065 states have (on average 1.6498789346246974) internal successors, (3407), 2153 states have internal predecessors, (3407), 509 states have call successors, (509), 124 states have call predecessors, (509), 126 states have return successors, (585), 501 states have call predecessors, (585), 505 states have call successors, (585) [2025-01-09 03:46:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 4501 transitions. [2025-01-09 03:46:14,092 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 4501 transitions. Word has length 124 [2025-01-09 03:46:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:14,092 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 4501 transitions. [2025-01-09 03:46:14,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:46:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 4501 transitions. [2025-01-09 03:46:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-01-09 03:46:14,098 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:14,098 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:14,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 03:46:14,098 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:14,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2106639650, now seen corresponding path program 1 times [2025-01-09 03:46:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817000903] [2025-01-09 03:46:14,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:14,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 03:46:14,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 03:46:14,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:14,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:46:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817000903] [2025-01-09 03:46:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817000903] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556813784] [2025-01-09 03:46:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:14,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:14,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:14,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:14,180 INFO L87 Difference]: Start difference. First operand 2701 states and 4501 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-01-09 03:46:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:14,340 INFO L93 Difference]: Finished difference Result 5398 states and 9066 transitions. [2025-01-09 03:46:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2025-01-09 03:46:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:14,360 INFO L225 Difference]: With dead ends: 5398 [2025-01-09 03:46:14,360 INFO L226 Difference]: Without dead ends: 2715 [2025-01-09 03:46:14,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:46:14,402 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 12 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:14,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2510 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-01-09 03:46:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2705. [2025-01-09 03:46:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2068 states have (on average 1.6484526112185687) internal successors, (3409), 2156 states have internal predecessors, (3409), 509 states have call successors, (509), 126 states have call predecessors, (509), 127 states have return successors, (576), 500 states have call predecessors, (576), 505 states have call successors, (576) [2025-01-09 03:46:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4494 transitions. [2025-01-09 03:46:14,521 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4494 transitions. Word has length 125 [2025-01-09 03:46:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:14,521 INFO L471 AbstractCegarLoop]: Abstraction has 2705 states and 4494 transitions. [2025-01-09 03:46:14,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-01-09 03:46:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4494 transitions. [2025-01-09 03:46:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-01-09 03:46:14,527 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:14,527 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:14,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 03:46:14,527 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:14,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1279749570, now seen corresponding path program 1 times [2025-01-09 03:46:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163394989] [2025-01-09 03:46:14,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:14,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 03:46:14,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 03:46:14,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:14,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:46:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163394989] [2025-01-09 03:46:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163394989] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531076329] [2025-01-09 03:46:14,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:14,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:14,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:14,730 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) [2025-01-09 03:46:14,732 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 [2025-01-09 03:46:14,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 03:46:15,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 03:46:15,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:15,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:15,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:46:15,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:46:15,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531076329] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-01-09 03:46:15,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175786291] [2025-01-09 03:46:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:15,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:15,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:15,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:46:15,168 INFO L87 Difference]: Start difference. First operand 2705 states and 4494 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:46:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:15,461 INFO L93 Difference]: Finished difference Result 7825 states and 13187 transitions. [2025-01-09 03:46:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2025-01-09 03:46:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:15,498 INFO L225 Difference]: With dead ends: 7825 [2025-01-09 03:46:15,498 INFO L226 Difference]: Without dead ends: 5139 [2025-01-09 03:46:15,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:46:15,522 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 697 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:15,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1598 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2025-01-09 03:46:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 5102. [2025-01-09 03:46:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 3886 states have (on average 1.6150283067421514) internal successors, (6276), 4060 states have internal predecessors, (6276), 966 states have call successors, (966), 246 states have call predecessors, (966), 249 states have return successors, (1197), 951 states have call predecessors, (1197), 960 states have call successors, (1197) [2025-01-09 03:46:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8439 transitions. [2025-01-09 03:46:15,817 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8439 transitions. Word has length 125 [2025-01-09 03:46:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:15,818 INFO L471 AbstractCegarLoop]: Abstraction has 5102 states and 8439 transitions. [2025-01-09 03:46:15,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:46:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8439 transitions. [2025-01-09 03:46:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 03:46:15,823 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:15,823 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:15,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:46:16,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:16,023 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:16,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1201856320, now seen corresponding path program 1 times [2025-01-09 03:46:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:16,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080288571] [2025-01-09 03:46:16,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:16,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:16,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 03:46:16,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 03:46:16,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:16,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:46:16,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080288571] [2025-01-09 03:46:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080288571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096001825] [2025-01-09 03:46:16,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:16,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:16,248 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) [2025-01-09 03:46:16,250 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 [2025-01-09 03:46:16,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 03:46:16,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 03:46:16,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:16,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:16,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 03:46:16,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:46:16,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096001825] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:16,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:16,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2025-01-09 03:46:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306644459] [2025-01-09 03:46:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:16,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:16,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:16,526 INFO L87 Difference]: Start difference. First operand 5102 states and 8439 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 03:46:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:16,903 INFO L93 Difference]: Finished difference Result 15192 states and 25450 transitions. [2025-01-09 03:46:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2025-01-09 03:46:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:16,975 INFO L225 Difference]: With dead ends: 15192 [2025-01-09 03:46:16,976 INFO L226 Difference]: Without dead ends: 10111 [2025-01-09 03:46:17,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:17,005 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 847 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:17,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1758 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10111 states. [2025-01-09 03:46:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10111 to 10008. [2025-01-09 03:46:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10008 states, 7648 states have (on average 1.6185930962343096) internal successors, (12379), 7976 states have internal predecessors, (12379), 1872 states have call successors, (1872), 474 states have call predecessors, (1872), 487 states have return successors, (2388), 1863 states have call predecessors, (2388), 1862 states have call successors, (2388) [2025-01-09 03:46:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10008 states to 10008 states and 16639 transitions. [2025-01-09 03:46:17,415 INFO L78 Accepts]: Start accepts. Automaton has 10008 states and 16639 transitions. Word has length 127 [2025-01-09 03:46:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:17,415 INFO L471 AbstractCegarLoop]: Abstraction has 10008 states and 16639 transitions. [2025-01-09 03:46:17,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 03:46:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10008 states and 16639 transitions. [2025-01-09 03:46:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 03:46:17,421 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:17,421 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:17,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:46:17,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 03:46:17,621 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:17,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 190739070, now seen corresponding path program 1 times [2025-01-09 03:46:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:17,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483071885] [2025-01-09 03:46:17,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:17,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 03:46:17,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 03:46:17,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:17,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:46:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483071885] [2025-01-09 03:46:17,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483071885] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817894314] [2025-01-09 03:46:17,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:17,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:17,833 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) [2025-01-09 03:46:17,834 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 [2025-01-09 03:46:17,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 03:46:18,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 03:46:18,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:18,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:18,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:46:18,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:46:18,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817894314] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-01-09 03:46:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392962172] [2025-01-09 03:46:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:18,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:18,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:18,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:46:18,188 INFO L87 Difference]: Start difference. First operand 10008 states and 16639 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 03:46:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:19,214 INFO L93 Difference]: Finished difference Result 18933 states and 31554 transitions. [2025-01-09 03:46:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2025-01-09 03:46:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:19,288 INFO L225 Difference]: With dead ends: 18933 [2025-01-09 03:46:19,288 INFO L226 Difference]: Without dead ends: 8943 [2025-01-09 03:46:19,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:46:19,346 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 721 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:19,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 4151 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:46:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8943 states. [2025-01-09 03:46:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8943 to 8921. [2025-01-09 03:46:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 6837 states have (on average 1.6046511627906976) internal successors, (10971), 7112 states have internal predecessors, (10971), 1638 states have call successors, (1638), 434 states have call predecessors, (1638), 445 states have return successors, (2072), 1630 states have call predecessors, (2072), 1628 states have call successors, (2072) [2025-01-09 03:46:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 14681 transitions. [2025-01-09 03:46:19,772 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 14681 transitions. Word has length 127 [2025-01-09 03:46:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:19,773 INFO L471 AbstractCegarLoop]: Abstraction has 8921 states and 14681 transitions. [2025-01-09 03:46:19,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 03:46:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 14681 transitions. [2025-01-09 03:46:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-01-09 03:46:19,776 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:19,776 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:19,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:46:19,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 03:46:19,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:19,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1107609834, now seen corresponding path program 1 times [2025-01-09 03:46:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838040308] [2025-01-09 03:46:19,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:19,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-01-09 03:46:20,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-01-09 03:46:20,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:20,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 03:46:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838040308] [2025-01-09 03:46:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838040308] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425215372] [2025-01-09 03:46:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:20,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:20,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:20,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:20,130 INFO L87 Difference]: Start difference. First operand 8921 states and 14681 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-01-09 03:46:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:21,024 INFO L93 Difference]: Finished difference Result 26709 states and 45141 transitions. [2025-01-09 03:46:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:21,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2025-01-09 03:46:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:21,136 INFO L225 Difference]: With dead ends: 26709 [2025-01-09 03:46:21,136 INFO L226 Difference]: Without dead ends: 17806 [2025-01-09 03:46:21,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:21,184 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 846 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:21,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 4305 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:46:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17806 states. [2025-01-09 03:46:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17806 to 17705. [2025-01-09 03:46:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17705 states, 13580 states have (on average 1.6010309278350516) internal successors, (21742), 14121 states have internal predecessors, (21742), 3231 states have call successors, (3231), 862 states have call predecessors, (3231), 893 states have return successors, (4745), 3233 states have call predecessors, (4745), 3213 states have call successors, (4745) [2025-01-09 03:46:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17705 states to 17705 states and 29718 transitions. [2025-01-09 03:46:21,830 INFO L78 Accepts]: Start accepts. Automaton has 17705 states and 29718 transitions. Word has length 135 [2025-01-09 03:46:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:21,831 INFO L471 AbstractCegarLoop]: Abstraction has 17705 states and 29718 transitions. [2025-01-09 03:46:21,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-01-09 03:46:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17705 states and 29718 transitions. [2025-01-09 03:46:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 03:46:21,835 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:21,835 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:21,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 03:46:21,836 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:21,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1301186337, now seen corresponding path program 1 times [2025-01-09 03:46:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412063521] [2025-01-09 03:46:21,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:21,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:21,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 03:46:21,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 03:46:21,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:21,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:46:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:21,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412063521] [2025-01-09 03:46:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412063521] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:21,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:21,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715032765] [2025-01-09 03:46:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:21,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:21,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:21,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:21,908 INFO L87 Difference]: Start difference. First operand 17705 states and 29718 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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) [2025-01-09 03:46:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:22,877 INFO L93 Difference]: Finished difference Result 35536 states and 60651 transitions. [2025-01-09 03:46:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:22,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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 136 [2025-01-09 03:46:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:22,994 INFO L225 Difference]: With dead ends: 35536 [2025-01-09 03:46:22,995 INFO L226 Difference]: Without dead ends: 17849 [2025-01-09 03:46:23,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:46:23,102 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 12 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:23,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2504 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17849 states. [2025-01-09 03:46:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17849 to 17785. [2025-01-09 03:46:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17785 states, 13652 states have (on average 1.5984471139759742) internal successors, (21822), 14177 states have internal predecessors, (21822), 3231 states have call successors, (3231), 894 states have call predecessors, (3231), 901 states have return successors, (4705), 3225 states have call predecessors, (4705), 3213 states have call successors, (4705) [2025-01-09 03:46:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17785 states to 17785 states and 29758 transitions. [2025-01-09 03:46:23,848 INFO L78 Accepts]: Start accepts. Automaton has 17785 states and 29758 transitions. Word has length 136 [2025-01-09 03:46:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:23,849 INFO L471 AbstractCegarLoop]: Abstraction has 17785 states and 29758 transitions. [2025-01-09 03:46:23,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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) [2025-01-09 03:46:23,849 INFO L276 IsEmpty]: Start isEmpty. Operand 17785 states and 29758 transitions. [2025-01-09 03:46:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-01-09 03:46:23,853 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:23,853 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:23,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-09 03:46:23,853 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:23,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1237302464, now seen corresponding path program 1 times [2025-01-09 03:46:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22186780] [2025-01-09 03:46:23,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:23,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 03:46:23,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 03:46:23,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:23,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:46:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22186780] [2025-01-09 03:46:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22186780] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:23,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475494143] [2025-01-09 03:46:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:23,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:23,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:23,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:23,971 INFO L87 Difference]: Start difference. First operand 17785 states and 29758 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-01-09 03:46:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:25,552 INFO L93 Difference]: Finished difference Result 53441 states and 92918 transitions. [2025-01-09 03:46:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2025-01-09 03:46:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:25,776 INFO L225 Difference]: With dead ends: 53441 [2025-01-09 03:46:25,777 INFO L226 Difference]: Without dead ends: 35674 [2025-01-09 03:46:25,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:25,883 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 840 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:25,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 4284 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:46:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35674 states. [2025-01-09 03:46:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35674 to 35509. [2025-01-09 03:46:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35509 states, 27267 states have (on average 1.5948582535665823) internal successors, (43487), 28308 states have internal predecessors, (43487), 6428 states have call successors, (6428), 1782 states have call predecessors, (6428), 1813 states have return successors, (11267), 6442 states have call predecessors, (11267), 6394 states have call successors, (11267) [2025-01-09 03:46:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35509 states to 35509 states and 61182 transitions. [2025-01-09 03:46:27,981 INFO L78 Accepts]: Start accepts. Automaton has 35509 states and 61182 transitions. Word has length 145 [2025-01-09 03:46:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:27,981 INFO L471 AbstractCegarLoop]: Abstraction has 35509 states and 61182 transitions. [2025-01-09 03:46:27,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-01-09 03:46:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 35509 states and 61182 transitions. [2025-01-09 03:46:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-01-09 03:46:27,986 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:27,986 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-01-09 03:46:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 03:46:27,986 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:27,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1519289729, now seen corresponding path program 1 times [2025-01-09 03:46:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409723690] [2025-01-09 03:46:27,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:28,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-01-09 03:46:28,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-01-09 03:46:28,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:28,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:46:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409723690] [2025-01-09 03:46:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409723690] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:28,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:28,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216955616] [2025-01-09 03:46:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:28,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:28,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:28,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:28,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:28,060 INFO L87 Difference]: Start difference. First operand 35509 states and 61182 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-01-09 03:46:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:29,705 INFO L93 Difference]: Finished difference Result 71288 states and 126020 transitions. [2025-01-09 03:46:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:29,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2025-01-09 03:46:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:29,912 INFO L225 Difference]: With dead ends: 71288 [2025-01-09 03:46:29,913 INFO L226 Difference]: Without dead ends: 35797 [2025-01-09 03:46:30,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:46:30,119 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 11 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:30,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2504 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35797 states. [2025-01-09 03:46:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35797 to 35669. [2025-01-09 03:46:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35669 states, 27411 states have (on average 1.5923169530480463) internal successors, (43647), 28452 states have internal predecessors, (43647), 6428 states have call successors, (6428), 1814 states have call predecessors, (6428), 1829 states have return successors, (11211), 6426 states have call predecessors, (11211), 6394 states have call successors, (11211) [2025-01-09 03:46:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35669 states to 35669 states and 61286 transitions. [2025-01-09 03:46:32,011 INFO L78 Accepts]: Start accepts. Automaton has 35669 states and 61286 transitions. Word has length 146 [2025-01-09 03:46:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:32,011 INFO L471 AbstractCegarLoop]: Abstraction has 35669 states and 61286 transitions. [2025-01-09 03:46:32,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-01-09 03:46:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35669 states and 61286 transitions. [2025-01-09 03:46:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 03:46:32,017 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:32,017 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:32,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 03:46:32,017 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:32,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1798013533, now seen corresponding path program 1 times [2025-01-09 03:46:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426511950] [2025-01-09 03:46:32,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:32,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 03:46:32,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 03:46:32,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:32,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 03:46:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:32,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426511950] [2025-01-09 03:46:32,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426511950] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:32,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:32,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:32,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536291402] [2025-01-09 03:46:32,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:32,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:32,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:32,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:32,199 INFO L87 Difference]: Start difference. First operand 35669 states and 61286 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-01-09 03:46:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:35,638 INFO L93 Difference]: Finished difference Result 107329 states and 195298 transitions. [2025-01-09 03:46:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2025-01-09 03:46:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:36,355 INFO L225 Difference]: With dead ends: 107329 [2025-01-09 03:46:36,355 INFO L226 Difference]: Without dead ends: 71678 [2025-01-09 03:46:36,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:46:36,771 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 837 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:36,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 4426 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:46:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71678 states. [2025-01-09 03:46:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71678 to 71385. [2025-01-09 03:46:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71385 states, 54866 states have (on average 1.5896183428717239) internal successors, (87216), 56939 states have internal predecessors, (87216), 12833 states have call successors, (12833), 3622 states have call predecessors, (12833), 3685 states have return successors, (28065), 12871 states have call predecessors, (28065), 12767 states have call successors, (28065) [2025-01-09 03:46:40,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71385 states to 71385 states and 128114 transitions. [2025-01-09 03:46:40,338 INFO L78 Accepts]: Start accepts. Automaton has 71385 states and 128114 transitions. Word has length 156 [2025-01-09 03:46:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:40,339 INFO L471 AbstractCegarLoop]: Abstraction has 71385 states and 128114 transitions. [2025-01-09 03:46:40,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-01-09 03:46:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 71385 states and 128114 transitions. [2025-01-09 03:46:40,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 03:46:40,344 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:40,344 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2025-01-09 03:46:40,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-09 03:46:40,344 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:40,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -521468220, now seen corresponding path program 1 times [2025-01-09 03:46:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828826353] [2025-01-09 03:46:40,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:40,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 03:46:40,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 03:46:40,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:40,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-09 03:46:40,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:40,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828826353] [2025-01-09 03:46:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828826353] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:40,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708508754] [2025-01-09 03:46:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:40,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:40,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:40,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:40,415 INFO L87 Difference]: Start difference. First operand 71385 states and 128114 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 03:46:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:45,646 INFO L93 Difference]: Finished difference Result 143392 states and 267665 transitions. [2025-01-09 03:46:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2025-01-09 03:46:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:46,136 INFO L225 Difference]: With dead ends: 143392 [2025-01-09 03:46:46,136 INFO L226 Difference]: Without dead ends: 72025 [2025-01-09 03:46:46,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:46:46,932 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 10 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:46,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2504 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72025 states. [2025-01-09 03:46:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72025 to 71769. [2025-01-09 03:46:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71769 states, 55218 states have (on average 1.5864392046071933) internal successors, (87600), 57291 states have internal predecessors, (87600), 12833 states have call successors, (12833), 3686 states have call predecessors, (12833), 3717 states have return successors, (28001), 12839 states have call predecessors, (28001), 12767 states have call successors, (28001) [2025-01-09 03:46:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71769 states to 71769 states and 128434 transitions. [2025-01-09 03:46:50,719 INFO L78 Accepts]: Start accepts. Automaton has 71769 states and 128434 transitions. Word has length 157 [2025-01-09 03:46:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:50,719 INFO L471 AbstractCegarLoop]: Abstraction has 71769 states and 128434 transitions. [2025-01-09 03:46:50,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 03:46:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 71769 states and 128434 transitions. [2025-01-09 03:46:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-01-09 03:46:50,727 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:50,727 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:50,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-01-09 03:46:50,727 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:50,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1150260253, now seen corresponding path program 1 times [2025-01-09 03:46:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378410943] [2025-01-09 03:46:50,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:50,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-01-09 03:46:50,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-01-09 03:46:50,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:50,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-01-09 03:46:50,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378410943] [2025-01-09 03:46:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378410943] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316759975] [2025-01-09 03:46:50,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:50,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:50,899 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) [2025-01-09 03:46:50,901 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 [2025-01-09 03:46:51,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-01-09 03:46:51,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-01-09 03:46:51,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:51,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:51,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:46:51,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:46:51,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:51,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316759975] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:51,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:51,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-01-09 03:46:51,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888023747] [2025-01-09 03:46:51,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:51,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:51,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:51,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:46:51,261 INFO L87 Difference]: Start difference. First operand 71769 states and 128434 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)