./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product20.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_product20.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 b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:46:33,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:46:33,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:46:33,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:46:33,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:46:33,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:46:33,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:46:33,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:46:33,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:46:33,096 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:46:33,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:46:33,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:46:33,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:46:33,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:46:33,096 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:46:33,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:46:33,097 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:46:33,098 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:33,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:46:33,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:33,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:46:33,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:46:33,099 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 -> b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 [2025-01-09 03:46:33,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:46:33,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:46:33,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:46:33,308 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:46:33,308 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:46:33,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2025-01-09 03:46:34,468 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b462f783f/6ccb7fda63184aa8831c2715f51f8b64/FLAG627f6333f [2025-01-09 03:46:34,841 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:46:34,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2025-01-09 03:46:34,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b462f783f/6ccb7fda63184aa8831c2715f51f8b64/FLAG627f6333f [2025-01-09 03:46:35,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b462f783f/6ccb7fda63184aa8831c2715f51f8b64 [2025-01-09 03:46:35,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:46:35,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:46:35,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:46:35,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:46:35,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:46:35,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8ce6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35, skipping insertion in model container [2025-01-09 03:46:35,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:46:35,464 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_product20.cil.c[62576,62589] [2025-01-09 03:46:35,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:46:35,499 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:46:35,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2025-01-09 03:46:35,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [151] [2025-01-09 03:46:35,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [818] [2025-01-09 03:46:35,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2396] [2025-01-09 03:46:35,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2762] [2025-01-09 03:46:35,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2780] [2025-01-09 03:46:35,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2818] [2025-01-09 03:46:35,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2827] [2025-01-09 03:46:35,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3175] [2025-01-09 03:46:35,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3293] [2025-01-09 03:46:35,612 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_product20.cil.c[62576,62589] [2025-01-09 03:46:35,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:46:35,668 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:46:35,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35 WrapperNode [2025-01-09 03:46:35,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:46:35,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:46:35,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:46:35,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:46:35,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,758 INFO L138 Inliner]: procedures = 94, calls = 352, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 1108 [2025-01-09 03:46:35,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:46:35,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:46:35,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:46:35,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:46:35,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,789 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-01-09 03:46:35,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,801 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:46:35,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:46:35,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:46:35,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:46:35,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (1/1) ... [2025-01-09 03:46:35,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:46:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:35,845 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 03:46:35,863 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 03:46:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:46:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-01-09 03:46:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-01-09 03:46:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-01-09 03:46:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-01-09 03:46:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-01-09 03:46:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-01-09 03:46:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-01-09 03:46:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-01-09 03:46:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-01-09 03:46:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-01-09 03:46:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-01-09 03:46:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-01-09 03:46:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-01-09 03:46:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-01-09 03:46:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-01-09 03:46:36,022 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:46:36,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:46:37,079 INFO L? ?]: Removed 461 outVars from TransFormulas that were not future-live. [2025-01-09 03:46:37,080 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:46:37,094 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:46:37,095 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 03:46:37,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:46:37 BoogieIcfgContainer [2025-01-09 03:46:37,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:46:37,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:46:37,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:46:37,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:46:37,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:46:35" (1/3) ... [2025-01-09 03:46:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565999f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:46:37, skipping insertion in model container [2025-01-09 03:46:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:46:35" (2/3) ... [2025-01-09 03:46:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565999f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:46:37, skipping insertion in model container [2025-01-09 03:46:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:46:37" (3/3) ... [2025-01-09 03:46:37,102 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2025-01-09 03:46:37,116 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:46:37,119 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product20.cil.c that has 29 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 03:46:37,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:46:37,171 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;@16fbcda1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:46:37,171 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:46:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 476 states have internal predecessors, (759), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2025-01-09 03:46:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 03:46:37,183 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:37,183 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:37,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1794592618, now seen corresponding path program 1 times [2025-01-09 03:46:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493470219] [2025-01-09 03:46:37,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:37,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 03:46:37,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 03:46:37,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:37,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:37,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493470219] [2025-01-09 03:46:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493470219] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197844926] [2025-01-09 03:46:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:37,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:37,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:37,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:37,746 INFO L87 Difference]: Start difference. First operand has 596 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 476 states have internal predecessors, (759), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:37,959 INFO L93 Difference]: Finished difference Result 1189 states and 1970 transitions. [2025-01-09 03:46:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-01-09 03:46:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:37,973 INFO L225 Difference]: With dead ends: 1189 [2025-01-09 03:46:37,973 INFO L226 Difference]: Without dead ends: 601 [2025-01-09 03:46:37,980 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 03:46:37,982 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 91 mSDsluCounter, 4730 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5693 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 03:46:37,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5693 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-01-09 03:46:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2025-01-09 03:46:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 459 states have (on average 1.6579520697167756) internal successors, (761), 479 states have internal predecessors, (761), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2025-01-09 03:46:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 982 transitions. [2025-01-09 03:46:38,056 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 982 transitions. Word has length 67 [2025-01-09 03:46:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:38,056 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 982 transitions. [2025-01-09 03:46:38,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 982 transitions. [2025-01-09 03:46:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 03:46:38,059 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:38,060 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:38,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:46:38,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:38,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash 29773758, now seen corresponding path program 1 times [2025-01-09 03:46:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:38,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714572227] [2025-01-09 03:46:38,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:38,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 03:46:38,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 03:46:38,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:38,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:38,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714572227] [2025-01-09 03:46:38,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714572227] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:38,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:38,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509581996] [2025-01-09 03:46:38,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:38,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:38,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:38,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:38,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:38,361 INFO L87 Difference]: Start difference. First operand 599 states and 982 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:38,532 INFO L93 Difference]: Finished difference Result 1193 states and 1967 transitions. [2025-01-09 03:46:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2025-01-09 03:46:38,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:38,540 INFO L225 Difference]: With dead ends: 1193 [2025-01-09 03:46:38,541 INFO L226 Difference]: Without dead ends: 610 [2025-01-09 03:46:38,544 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 03:46:38,544 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 90 mSDsluCounter, 4724 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5688 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:38,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5688 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-01-09 03:46:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 599. [2025-01-09 03:46:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 459 states have (on average 1.6579520697167756) internal successors, (761), 479 states have internal predecessors, (761), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2025-01-09 03:46:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 982 transitions. [2025-01-09 03:46:38,596 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 982 transitions. Word has length 68 [2025-01-09 03:46:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:38,597 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 982 transitions. [2025-01-09 03:46:38,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 982 transitions. [2025-01-09 03:46:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 03:46:38,606 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:38,606 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:38,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:46:38,606 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:38,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 256095776, now seen corresponding path program 1 times [2025-01-09 03:46:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220775083] [2025-01-09 03:46:38,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:38,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 03:46:38,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 03:46:38,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:38,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:38,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220775083] [2025-01-09 03:46:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220775083] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:38,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:38,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:38,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041015042] [2025-01-09 03:46:38,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:38,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:38,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:38,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:38,756 INFO L87 Difference]: Start difference. First operand 599 states and 982 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:38,835 INFO L93 Difference]: Finished difference Result 1180 states and 1945 transitions. [2025-01-09 03:46:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-01-09 03:46:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:38,841 INFO L225 Difference]: With dead ends: 1180 [2025-01-09 03:46:38,841 INFO L226 Difference]: Without dead ends: 569 [2025-01-09 03:46:38,843 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 03:46:38,846 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 14 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2851 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 03:46:38,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2851 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-01-09 03:46:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-01-09 03:46:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 432 states have (on average 1.6412037037037037) internal successors, (709), 450 states have internal predecessors, (709), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2025-01-09 03:46:38,873 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 68 [2025-01-09 03:46:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:38,875 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2025-01-09 03:46:38,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2025-01-09 03:46:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-09 03:46:38,876 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:38,876 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:38,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:46:38,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:38,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -213737030, now seen corresponding path program 1 times [2025-01-09 03:46:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085081878] [2025-01-09 03:46:38,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:38,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 03:46:38,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 03:46:38,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:38,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085081878] [2025-01-09 03:46:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085081878] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101048422] [2025-01-09 03:46:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:39,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:39,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:39,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:39,066 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:39,126 INFO L93 Difference]: Finished difference Result 1131 states and 1851 transitions. [2025-01-09 03:46:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:39,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-01-09 03:46:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:39,131 INFO L225 Difference]: With dead ends: 1131 [2025-01-09 03:46:39,131 INFO L226 Difference]: Without dead ends: 563 [2025-01-09 03:46:39,133 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 03:46:39,134 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 63 mSDsluCounter, 4522 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5438 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 03:46:39,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5438 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-01-09 03:46:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2025-01-09 03:46:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 426 states have (on average 1.6338028169014085) internal successors, (696), 444 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 913 transitions. [2025-01-09 03:46:39,152 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 913 transitions. Word has length 69 [2025-01-09 03:46:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:39,152 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 913 transitions. [2025-01-09 03:46:39,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 913 transitions. [2025-01-09 03:46:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 03:46:39,154 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:39,154 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:39,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 03:46:39,154 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:39,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -136930462, now seen corresponding path program 1 times [2025-01-09 03:46:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761870893] [2025-01-09 03:46:39,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:39,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 03:46:39,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 03:46:39,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:39,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:39,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761870893] [2025-01-09 03:46:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761870893] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782556931] [2025-01-09 03:46:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:39,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:39,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:39,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:39,312 INFO L87 Difference]: Start difference. First operand 563 states and 913 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:39,370 INFO L93 Difference]: Finished difference Result 1119 states and 1825 transitions. [2025-01-09 03:46:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-01-09 03:46:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:39,374 INFO L225 Difference]: With dead ends: 1119 [2025-01-09 03:46:39,374 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:39,376 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 03:46:39,377 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 49 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5378 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 03:46:39,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5378 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:39,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6261904761904762) internal successors, (683), 438 states have internal predecessors, (683), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 900 transitions. [2025-01-09 03:46:39,396 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 900 transitions. Word has length 70 [2025-01-09 03:46:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:39,397 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 900 transitions. [2025-01-09 03:46:39,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 900 transitions. [2025-01-09 03:46:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 03:46:39,398 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:39,398 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:39,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:46:39,398 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:39,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 757959331, now seen corresponding path program 1 times [2025-01-09 03:46:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362904297] [2025-01-09 03:46:39,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:39,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 03:46:39,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 03:46:39,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:39,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362904297] [2025-01-09 03:46:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362904297] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 03:46:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839783769] [2025-01-09 03:46:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:39,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:46:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:39,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:46:39,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:46:39,572 INFO L87 Difference]: Start difference. First operand 557 states and 900 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:39,649 INFO L93 Difference]: Finished difference Result 1107 states and 1799 transitions. [2025-01-09 03:46:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:46:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-01-09 03:46:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:39,654 INFO L225 Difference]: With dead ends: 1107 [2025-01-09 03:46:39,654 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:39,656 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 03:46:39,657 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 24 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5330 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 03:46:39,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5330 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6238095238095238) internal successors, (682), 438 states have internal predecessors, (682), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 899 transitions. [2025-01-09 03:46:39,681 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 899 transitions. Word has length 70 [2025-01-09 03:46:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:39,682 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 899 transitions. [2025-01-09 03:46:39,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 899 transitions. [2025-01-09 03:46:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 03:46:39,683 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:39,683 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:39,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 03:46:39,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:39,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1279779550, now seen corresponding path program 1 times [2025-01-09 03:46:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52833388] [2025-01-09 03:46:39,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:39,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 03:46:39,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 03:46:39,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:39,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52833388] [2025-01-09 03:46:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52833388] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294087276] [2025-01-09 03:46:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:39,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:39,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:39,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:39,777 INFO L87 Difference]: Start difference. First operand 557 states and 899 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:39,819 INFO L93 Difference]: Finished difference Result 1098 states and 1784 transitions. [2025-01-09 03:46:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:39,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2025-01-09 03:46:39,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:39,824 INFO L225 Difference]: With dead ends: 1098 [2025-01-09 03:46:39,824 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:39,826 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 03:46:39,826 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 15 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2637 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 03:46:39,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2637 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6214285714285714) internal successors, (681), 438 states have internal predecessors, (681), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 898 transitions. [2025-01-09 03:46:39,843 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 898 transitions. Word has length 71 [2025-01-09 03:46:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:39,843 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 898 transitions. [2025-01-09 03:46:39,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 898 transitions. [2025-01-09 03:46:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 03:46:39,844 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:39,844 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:39,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 03:46:39,844 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:39,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash 958682050, now seen corresponding path program 1 times [2025-01-09 03:46:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064633708] [2025-01-09 03:46:39,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:39,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 03:46:39,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 03:46:39,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:39,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:39,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064633708] [2025-01-09 03:46:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064633708] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672532964] [2025-01-09 03:46:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:39,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:39,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:39,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:39,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:39,932 INFO L87 Difference]: Start difference. First operand 557 states and 898 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:39,981 INFO L93 Difference]: Finished difference Result 1098 states and 1782 transitions. [2025-01-09 03:46:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2025-01-09 03:46:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:39,986 INFO L225 Difference]: With dead ends: 1098 [2025-01-09 03:46:39,987 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:39,989 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 03:46:39,990 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 14 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2639 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 03:46:39,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2639 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.619047619047619) internal successors, (680), 438 states have internal predecessors, (680), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 897 transitions. [2025-01-09 03:46:40,012 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 897 transitions. Word has length 72 [2025-01-09 03:46:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:40,012 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 897 transitions. [2025-01-09 03:46:40,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 897 transitions. [2025-01-09 03:46:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-09 03:46:40,013 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:40,013 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:40,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 03:46:40,016 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:40,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash -723856477, now seen corresponding path program 1 times [2025-01-09 03:46:40,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:40,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290178473] [2025-01-09 03:46:40,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:40,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:40,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 03:46:40,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 03:46:40,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:40,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:40,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:40,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290178473] [2025-01-09 03:46:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290178473] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:40,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506922471] [2025-01-09 03:46:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:40,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:40,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:40,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:40,100 INFO L87 Difference]: Start difference. First operand 557 states and 897 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:40,144 INFO L93 Difference]: Finished difference Result 1098 states and 1780 transitions. [2025-01-09 03:46:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2025-01-09 03:46:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:40,151 INFO L225 Difference]: With dead ends: 1098 [2025-01-09 03:46:40,151 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:40,154 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 03:46:40,154 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 13 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2641 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 03:46:40,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2641 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6166666666666667) internal successors, (679), 438 states have internal predecessors, (679), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 896 transitions. [2025-01-09 03:46:40,174 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 896 transitions. Word has length 73 [2025-01-09 03:46:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:40,174 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 896 transitions. [2025-01-09 03:46:40,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 896 transitions. [2025-01-09 03:46:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-09 03:46:40,176 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:40,176 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:40,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 03:46:40,176 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:40,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1661393881, now seen corresponding path program 1 times [2025-01-09 03:46:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989558550] [2025-01-09 03:46:40,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:40,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-09 03:46:40,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 03:46:40,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:40,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:40,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989558550] [2025-01-09 03:46:40,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989558550] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:40,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393431470] [2025-01-09 03:46:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:40,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:40,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:40,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:40,276 INFO L87 Difference]: Start difference. First operand 557 states and 896 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:40,316 INFO L93 Difference]: Finished difference Result 1098 states and 1778 transitions. [2025-01-09 03:46:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:46:40,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2025-01-09 03:46:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:40,321 INFO L225 Difference]: With dead ends: 1098 [2025-01-09 03:46:40,321 INFO L226 Difference]: Without dead ends: 557 [2025-01-09 03:46:40,323 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 03:46:40,323 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 12 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2643 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 03:46:40,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2643 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-01-09 03:46:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-01-09 03:46:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6142857142857143) internal successors, (678), 438 states have internal predecessors, (678), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-01-09 03:46:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 895 transitions. [2025-01-09 03:46:40,339 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 895 transitions. Word has length 74 [2025-01-09 03:46:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:40,340 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 895 transitions. [2025-01-09 03:46:40,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:46:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 895 transitions. [2025-01-09 03:46:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-09 03:46:40,341 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:40,341 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:40,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 03:46:40,341 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:40,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash -978732952, now seen corresponding path program 1 times [2025-01-09 03:46:40,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:40,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835407104] [2025-01-09 03:46:40,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:40,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-09 03:46:40,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 03:46:40,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:40,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:46:40,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:40,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835407104] [2025-01-09 03:46:40,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835407104] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:40,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307136222] [2025-01-09 03:46:40,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:40,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:40,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:40,523 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 03:46:40,524 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 03:46:40,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-09 03:46:40,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 03:46:40,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:40,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:40,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 03:46:40,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:46:40,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307136222] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-01-09 03:46:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264249747] [2025-01-09 03:46:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:40,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:40,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:40,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:46:40,919 INFO L87 Difference]: Start difference. First operand 557 states and 895 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:41,047 INFO L93 Difference]: Finished difference Result 1582 states and 2573 transitions. [2025-01-09 03:46:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:41,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-01-09 03:46:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:41,066 INFO L225 Difference]: With dead ends: 1582 [2025-01-09 03:46:41,066 INFO L226 Difference]: Without dead ends: 1043 [2025-01-09 03:46:41,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 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 03:46:41,074 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 857 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:41,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2303 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:46:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2025-01-09 03:46:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1028. [2025-01-09 03:46:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 782 states have (on average 1.6265984654731458) internal successors, (1272), 817 states have internal predecessors, (1272), 195 states have call successors, (195), 51 states have call predecessors, (195), 50 states have return successors, (197), 187 states have call predecessors, (197), 192 states have call successors, (197) [2025-01-09 03:46:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1664 transitions. [2025-01-09 03:46:41,116 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1664 transitions. Word has length 75 [2025-01-09 03:46:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:41,116 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1664 transitions. [2025-01-09 03:46:41,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1664 transitions. [2025-01-09 03:46:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-09 03:46:41,117 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:41,117 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:41,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:46:41,321 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 03:46:41,321 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:41,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1549900035, now seen corresponding path program 1 times [2025-01-09 03:46:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404719743] [2025-01-09 03:46:41,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:41,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-09 03:46:41,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-09 03:46:41,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:41,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:46:41,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404719743] [2025-01-09 03:46:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404719743] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274335151] [2025-01-09 03:46:41,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:41,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:41,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:41,508 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 03:46:41,513 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 03:46:41,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-09 03:46:41,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-09 03:46:41,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:41,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:41,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 03:46:41,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:46:41,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274335151] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-01-09 03:46:41,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195423440] [2025-01-09 03:46:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:41,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:46:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:41,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:46:41,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:46:41,808 INFO L87 Difference]: Start difference. First operand 1028 states and 1664 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:41,882 INFO L93 Difference]: Finished difference Result 2524 states and 4113 transitions. [2025-01-09 03:46:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:46:41,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2025-01-09 03:46:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:41,892 INFO L225 Difference]: With dead ends: 2524 [2025-01-09 03:46:41,892 INFO L226 Difference]: Without dead ends: 1514 [2025-01-09 03:46:41,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 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 03:46:41,897 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 854 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2367 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 03:46:41,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2367 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2025-01-09 03:46:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1466. [2025-01-09 03:46:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1117 states have (on average 1.6383169203222918) internal successors, (1830), 1169 states have internal predecessors, (1830), 277 states have call successors, (277), 71 states have call predecessors, (277), 71 states have return successors, (284), 267 states have call predecessors, (284), 274 states have call successors, (284) [2025-01-09 03:46:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2391 transitions. [2025-01-09 03:46:41,956 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2391 transitions. Word has length 76 [2025-01-09 03:46:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:41,956 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 2391 transitions. [2025-01-09 03:46:41,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 03:46:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2391 transitions. [2025-01-09 03:46:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-01-09 03:46:41,958 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:41,959 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:41,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 03:46:42,159 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 03:46:42,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:42,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -981265415, now seen corresponding path program 1 times [2025-01-09 03:46:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564522131] [2025-01-09 03:46:42,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:42,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-01-09 03:46:42,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 03:46:42,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:42,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564522131] [2025-01-09 03:46:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564522131] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:42,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717847316] [2025-01-09 03:46:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:42,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:42,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:42,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:42,319 INFO L87 Difference]: Start difference. First operand 1466 states and 2391 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 03:46:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:42,916 INFO L93 Difference]: Finished difference Result 4334 states and 7198 transitions. [2025-01-09 03:46:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:42,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2025-01-09 03:46:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:42,939 INFO L225 Difference]: With dead ends: 4334 [2025-01-09 03:46:42,939 INFO L226 Difference]: Without dead ends: 2886 [2025-01-09 03:46:42,948 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 03:46:42,948 INFO L435 NwaCegarLoop]: 1031 mSDtfsCounter, 883 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 4723 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:42,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 4723 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:46:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2025-01-09 03:46:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2839. [2025-01-09 03:46:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2167 states have (on average 1.641439778495616) internal successors, (3557), 2267 states have internal predecessors, (3557), 533 states have call successors, (533), 136 states have call predecessors, (533), 138 states have return successors, (621), 519 states have call predecessors, (621), 529 states have call successors, (621) [2025-01-09 03:46:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4711 transitions. [2025-01-09 03:46:43,126 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4711 transitions. Word has length 78 [2025-01-09 03:46:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:43,127 INFO L471 AbstractCegarLoop]: Abstraction has 2839 states and 4711 transitions. [2025-01-09 03:46:43,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 03:46:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4711 transitions. [2025-01-09 03:46:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 03:46:43,128 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:43,128 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:43,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 03:46:43,130 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:43,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -791396832, now seen corresponding path program 1 times [2025-01-09 03:46:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:43,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941151933] [2025-01-09 03:46:43,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:43,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 03:46:43,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 03:46:43,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:43,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:46:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941151933] [2025-01-09 03:46:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941151933] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766591748] [2025-01-09 03:46:43,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:43,292 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 03:46:43,295 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 03:46:43,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 03:46:43,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 03:46:43,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:43,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:43,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:46:43,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:46:43,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766591748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-01-09 03:46:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135807116] [2025-01-09 03:46:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:43,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:43,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:43,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:46:43,676 INFO L87 Difference]: Start difference. First operand 2839 states and 4711 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:46:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:44,438 INFO L93 Difference]: Finished difference Result 7682 states and 12936 transitions. [2025-01-09 03:46:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2025-01-09 03:46:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:44,477 INFO L225 Difference]: With dead ends: 7682 [2025-01-09 03:46:44,477 INFO L226 Difference]: Without dead ends: 4861 [2025-01-09 03:46:44,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 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 03:46:44,496 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 753 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:44,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 4035 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:46:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2025-01-09 03:46:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 4818. [2025-01-09 03:46:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 3672 states have (on average 1.593681917211329) internal successors, (5852), 3838 states have internal predecessors, (5852), 894 states have call successors, (894), 244 states have call predecessors, (894), 251 states have return successors, (1150), 875 states have call predecessors, (1150), 888 states have call successors, (1150) [2025-01-09 03:46:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7896 transitions. [2025-01-09 03:46:44,745 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7896 transitions. Word has length 79 [2025-01-09 03:46:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:44,746 INFO L471 AbstractCegarLoop]: Abstraction has 4818 states and 7896 transitions. [2025-01-09 03:46:44,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:46:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7896 transitions. [2025-01-09 03:46:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 03:46:44,747 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:44,747 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:44,757 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 03:46:44,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:44,951 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:44,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2023846388, now seen corresponding path program 1 times [2025-01-09 03:46:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:44,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39548931] [2025-01-09 03:46:44,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:44,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:44,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 03:46:44,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 03:46:44,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:44,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:46:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:45,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39548931] [2025-01-09 03:46:45,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39548931] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:45,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:45,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:45,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310695316] [2025-01-09 03:46:45,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:45,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:45,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:45,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:45,029 INFO L87 Difference]: Start difference. First operand 4818 states and 7896 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 03:46:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:45,234 INFO L93 Difference]: Finished difference Result 9642 states and 15957 transitions. [2025-01-09 03:46:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:45,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-01-09 03:46:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:45,270 INFO L225 Difference]: With dead ends: 9642 [2025-01-09 03:46:45,270 INFO L226 Difference]: Without dead ends: 4842 [2025-01-09 03:46:45,296 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 03:46:45,296 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 12 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:45,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2609 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2025-01-09 03:46:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4826. [2025-01-09 03:46:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 3678 states have (on average 1.5921696574225122) internal successors, (5856), 3844 states have internal predecessors, (5856), 894 states have call successors, (894), 248 states have call predecessors, (894), 253 states have return successors, (1137), 873 states have call predecessors, (1137), 888 states have call successors, (1137) [2025-01-09 03:46:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7887 transitions. [2025-01-09 03:46:45,559 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7887 transitions. Word has length 79 [2025-01-09 03:46:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:45,561 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 7887 transitions. [2025-01-09 03:46:45,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 03:46:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7887 transitions. [2025-01-09 03:46:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 03:46:45,562 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:45,562 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-01-09 03:46:45,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 03:46:45,563 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:45,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1516429889, now seen corresponding path program 1 times [2025-01-09 03:46:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729567823] [2025-01-09 03:46:45,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:45,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 03:46:45,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 03:46:45,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:45,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 03:46:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729567823] [2025-01-09 03:46:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729567823] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:45,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:45,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755824999] [2025-01-09 03:46:45,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:45,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:45,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:45,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:45,711 INFO L87 Difference]: Start difference. First operand 4826 states and 7887 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 03:46:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:46,389 INFO L93 Difference]: Finished difference Result 14429 states and 24389 transitions. [2025-01-09 03:46:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2025-01-09 03:46:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:46,466 INFO L225 Difference]: With dead ends: 14429 [2025-01-09 03:46:46,467 INFO L226 Difference]: Without dead ends: 9621 [2025-01-09 03:46:46,489 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 03:46:46,491 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 880 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:46,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 4470 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:46:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9621 states. [2025-01-09 03:46:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9621 to 9552. [2025-01-09 03:46:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9552 states, 7286 states have (on average 1.5897611858358496) internal successors, (11583), 7612 states have internal predecessors, (11583), 1760 states have call successors, (1760), 490 states have call predecessors, (1760), 505 states have return successors, (2681), 1729 states have call predecessors, (2681), 1750 states have call successors, (2681) [2025-01-09 03:46:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 16024 transitions. [2025-01-09 03:46:46,939 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 16024 transitions. Word has length 87 [2025-01-09 03:46:46,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:46,940 INFO L471 AbstractCegarLoop]: Abstraction has 9552 states and 16024 transitions. [2025-01-09 03:46:46,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 03:46:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 16024 transitions. [2025-01-09 03:46:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-09 03:46:46,941 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:46,941 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:46,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 03:46:46,942 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:46,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1330288372, now seen corresponding path program 1 times [2025-01-09 03:46:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:46,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426874549] [2025-01-09 03:46:46,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:46,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:46,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-09 03:46:46,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 03:46:46,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:46,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:46:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426874549] [2025-01-09 03:46:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426874549] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:47,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:47,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249767186] [2025-01-09 03:46:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:47,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:47,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:47,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:47,007 INFO L87 Difference]: Start difference. First operand 9552 states and 16024 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 03:46:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:47,422 INFO L93 Difference]: Finished difference Result 19158 states and 32601 transitions. [2025-01-09 03:46:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-01-09 03:46:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:47,490 INFO L225 Difference]: With dead ends: 19158 [2025-01-09 03:46:47,490 INFO L226 Difference]: Without dead ends: 9624 [2025-01-09 03:46:47,529 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 03:46:47,530 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 12 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2603 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 03:46:47,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2603 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2025-01-09 03:46:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9592. [2025-01-09 03:46:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 7322 states have (on average 1.587407812073204) internal successors, (11623), 7640 states have internal predecessors, (11623), 1760 states have call successors, (1760), 506 states have call predecessors, (1760), 509 states have return successors, (2661), 1725 states have call predecessors, (2661), 1750 states have call successors, (2661) [2025-01-09 03:46:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 16044 transitions. [2025-01-09 03:46:48,036 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 16044 transitions. Word has length 88 [2025-01-09 03:46:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:48,038 INFO L471 AbstractCegarLoop]: Abstraction has 9592 states and 16044 transitions. [2025-01-09 03:46:48,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 03:46:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 16044 transitions. [2025-01-09 03:46:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-09 03:46:48,040 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:48,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:48,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-09 03:46:48,040 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:48,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1084630094, now seen corresponding path program 1 times [2025-01-09 03:46:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747338676] [2025-01-09 03:46:48,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:48,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-01-09 03:46:48,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-01-09 03:46:48,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:48,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:46:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747338676] [2025-01-09 03:46:48,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747338676] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:48,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:46:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390949982] [2025-01-09 03:46:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:48,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:46:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:48,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:46:48,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:46:48,193 INFO L87 Difference]: Start difference. First operand 9592 states and 16044 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 03:46:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:49,332 INFO L93 Difference]: Finished difference Result 28799 states and 50625 transitions. [2025-01-09 03:46:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:46:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2025-01-09 03:46:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:49,456 INFO L225 Difference]: With dead ends: 28799 [2025-01-09 03:46:49,456 INFO L226 Difference]: Without dead ends: 19225 [2025-01-09 03:46:49,504 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 03:46:49,505 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 875 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:49,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 4604 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:46:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19225 states. [2025-01-09 03:46:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19225 to 19124. [2025-01-09 03:46:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19124 states, 14604 states have (on average 1.584565872363736) internal successors, (23141), 15234 states have internal predecessors, (23141), 3498 states have call successors, (3498), 1006 states have call predecessors, (3498), 1021 states have return successors, (6642), 3443 states have call predecessors, (6642), 3480 states have call successors, (6642) [2025-01-09 03:46:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19124 states to 19124 states and 33281 transitions. [2025-01-09 03:46:50,495 INFO L78 Accepts]: Start accepts. Automaton has 19124 states and 33281 transitions. Word has length 97 [2025-01-09 03:46:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:50,495 INFO L471 AbstractCegarLoop]: Abstraction has 19124 states and 33281 transitions. [2025-01-09 03:46:50,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 03:46:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19124 states and 33281 transitions. [2025-01-09 03:46:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-01-09 03:46:50,496 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:50,497 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:50,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 03:46:50,497 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:50,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1489106411, now seen corresponding path program 1 times [2025-01-09 03:46:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458783259] [2025-01-09 03:46:50,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:50,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-01-09 03:46:50,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-01-09 03:46:50,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:50,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:46:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458783259] [2025-01-09 03:46:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458783259] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:50,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:46:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:46:50,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39517703] [2025-01-09 03:46:50,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:50,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:46:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:50,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:46:50,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:46:50,571 INFO L87 Difference]: Start difference. First operand 19124 states and 33281 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-01-09 03:46:51,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:51,368 INFO L93 Difference]: Finished difference Result 38374 states and 68306 transitions. [2025-01-09 03:46:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:46:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-01-09 03:46:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:51,495 INFO L225 Difference]: With dead ends: 38374 [2025-01-09 03:46:51,496 INFO L226 Difference]: Without dead ends: 19268 [2025-01-09 03:46:51,586 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 03:46:51,586 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 11 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2603 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 03:46:51,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2603 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:46:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2025-01-09 03:46:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 19204. [2025-01-09 03:46:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19204 states, 14676 states have (on average 1.582243118015808) internal successors, (23221), 15306 states have internal predecessors, (23221), 3498 states have call successors, (3498), 1022 states have call predecessors, (3498), 1029 states have return successors, (6614), 3435 states have call predecessors, (6614), 3480 states have call successors, (6614) [2025-01-09 03:46:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19204 states to 19204 states and 33333 transitions. [2025-01-09 03:46:52,558 INFO L78 Accepts]: Start accepts. Automaton has 19204 states and 33333 transitions. Word has length 98 [2025-01-09 03:46:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:46:52,559 INFO L471 AbstractCegarLoop]: Abstraction has 19204 states and 33333 transitions. [2025-01-09 03:46:52,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-01-09 03:46:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19204 states and 33333 transitions. [2025-01-09 03:46:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 03:46:52,561 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:46:52,562 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:46:52,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-09 03:46:52,562 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:46:52,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:46:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2123399663, now seen corresponding path program 1 times [2025-01-09 03:46:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:46:52,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686460258] [2025-01-09 03:46:52,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:46:52,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 03:46:52,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 03:46:52,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:52,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 03:46:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:46:52,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686460258] [2025-01-09 03:46:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686460258] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:46:52,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892780093] [2025-01-09 03:46:52,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:46:52,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:46:52,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:46:52,804 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 03:46:52,806 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 03:46:52,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 03:46:53,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 03:46:53,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:46:53,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:46:53,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:46:53,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:46:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-09 03:46:53,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:46:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892780093] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:46:53,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:46:53,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-01-09 03:46:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379879657] [2025-01-09 03:46:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:46:53,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:46:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:46:53,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:46:53,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:46:53,268 INFO L87 Difference]: Start difference. First operand 19204 states and 33333 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 03:46:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:46:58,326 INFO L93 Difference]: Finished difference Result 68517 states and 126293 transitions. [2025-01-09 03:46:58,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:46:58,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 136 [2025-01-09 03:46:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:46:58,892 INFO L225 Difference]: With dead ends: 68517 [2025-01-09 03:46:58,893 INFO L226 Difference]: Without dead ends: 49331 [2025-01-09 03:46:59,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:46:59,062 INFO L435 NwaCegarLoop]: 637 mSDtfsCounter, 2548 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 6533 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 7075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 6533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:46:59,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 2473 Invalid, 7075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 6533 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-01-09 03:46:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49331 states. [2025-01-09 03:47:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49331 to 48670. [2025-01-09 03:47:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48670 states, 37236 states have (on average 1.5764045547319798) internal successors, (58699), 38762 states have internal predecessors, (58699), 8756 states have call successors, (8756), 2534 states have call predecessors, (8756), 2677 states have return successors, (20245), 8741 states have call predecessors, (20245), 8722 states have call successors, (20245) [2025-01-09 03:47:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48670 states to 48670 states and 87700 transitions. [2025-01-09 03:47:02,114 INFO L78 Accepts]: Start accepts. Automaton has 48670 states and 87700 transitions. Word has length 136 [2025-01-09 03:47:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:47:02,115 INFO L471 AbstractCegarLoop]: Abstraction has 48670 states and 87700 transitions. [2025-01-09 03:47:02,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 03:47:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 48670 states and 87700 transitions. [2025-01-09 03:47:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-01-09 03:47:02,117 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:47:02,117 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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 03:47:02,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 03:47:02,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:47:02,322 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:47:02,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:47:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1589355160, now seen corresponding path program 1 times [2025-01-09 03:47:02,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:47:02,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785923093] [2025-01-09 03:47:02,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:47:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:47:02,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-01-09 03:47:02,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-01-09 03:47:02,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:47:02,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:47:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-09 03:47:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:47:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785923093] [2025-01-09 03:47:02,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785923093] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:47:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:47:02,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:47:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128382239] [2025-01-09 03:47:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:47:02,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:47:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:47:02,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:47:02,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:47:02,475 INFO L87 Difference]: Start difference. First operand 48670 states and 87700 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-01-09 03:47:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:47:07,154 INFO L93 Difference]: Finished difference Result 146439 states and 289885 transitions. [2025-01-09 03:47:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:47:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2025-01-09 03:47:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:47:08,162 INFO L225 Difference]: With dead ends: 146439 [2025-01-09 03:47:08,162 INFO L226 Difference]: Without dead ends: 97787 [2025-01-09 03:47:08,760 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 03:47:08,761 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 871 mSDsluCounter, 3611 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 4606 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:47:08,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 4606 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:47:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97787 states. [2025-01-09 03:47:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97787 to 97430. [2025-01-09 03:47:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97430 states, 74552 states have (on average 1.573706942805022) internal successors, (117323), 77590 states have internal predecessors, (117323), 17480 states have call successors, (17480), 5062 states have call predecessors, (17480), 5397 states have return successors, (53720), 17513 states have call predecessors, (53720), 17414 states have call successors, (53720) [2025-01-09 03:47:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97430 states to 97430 states and 188523 transitions. [2025-01-09 03:47:14,269 INFO L78 Accepts]: Start accepts. Automaton has 97430 states and 188523 transitions. Word has length 108 [2025-01-09 03:47:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:47:14,270 INFO L471 AbstractCegarLoop]: Abstraction has 97430 states and 188523 transitions. [2025-01-09 03:47:14,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-01-09 03:47:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 97430 states and 188523 transitions. [2025-01-09 03:47:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-01-09 03:47:14,271 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:47:14,271 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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 03:47:14,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 03:47:14,272 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:47:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:47:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2085169859, now seen corresponding path program 1 times [2025-01-09 03:47:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:47:14,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113290840] [2025-01-09 03:47:14,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:47:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:47:14,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-01-09 03:47:14,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-01-09 03:47:14,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:47:14,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:47:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:47:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:47:14,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113290840] [2025-01-09 03:47:14,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113290840] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:47:14,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:47:14,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:47:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118916584] [2025-01-09 03:47:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:47:14,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:47:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:47:14,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:47:14,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:47:14,351 INFO L87 Difference]: Start difference. First operand 97430 states and 188523 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-01-09 03:47:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:47:20,291 INFO L93 Difference]: Finished difference Result 195738 states and 396369 transitions. [2025-01-09 03:47:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:47:20,292 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-01-09 03:47:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:47:21,667 INFO L225 Difference]: With dead ends: 195738 [2025-01-09 03:47:21,667 INFO L226 Difference]: Without dead ends: 98326 [2025-01-09 03:47:22,446 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 03:47:22,452 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 10 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2603 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 03:47:22,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2603 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:47:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states.