./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:28:12,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:28:12,297 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:28:12,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:28:12,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:28:12,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:28:12,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:28:12,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:28:12,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:28:12,329 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:28:12,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:28:12,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:28:12,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:28:12,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:28:12,330 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:28:12,331 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:28:12,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:28:12,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:28:12,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:28:12,332 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/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 -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2025-03-08 05:28:12,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:28:12,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:28:12,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:28:12,582 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:28:12,582 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:28:12,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2025-03-08 05:28:13,817 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b79004cd/e5c2418287084d8d94597c9ed11f4ffa/FLAG14d845876 [2025-03-08 05:28:14,115 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:28:14,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2025-03-08 05:28:14,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b79004cd/e5c2418287084d8d94597c9ed11f4ffa/FLAG14d845876 [2025-03-08 05:28:14,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b79004cd/e5c2418287084d8d94597c9ed11f4ffa [2025-03-08 05:28:14,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:28:14,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:28:14,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:28:14,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:28:14,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:28:14,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a736df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14, skipping insertion in model container [2025-03-08 05:28:14,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:28:14,308 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2025-03-08 05:28:14,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:28:14,575 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:28:14,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [57] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [95] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [653] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [752] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [770] [2025-03-08 05:28:14,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1437] [2025-03-08 05:28:14,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1557] [2025-03-08 05:28:14,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3170] [2025-03-08 05:28:14,586 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2025-03-08 05:28:14,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:28:14,698 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:28:14,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14 WrapperNode [2025-03-08 05:28:14,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:28:14,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:28:14,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:28:14,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:28:14,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,772 INFO L138 Inliner]: procedures = 95, calls = 355, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 985 [2025-03-08 05:28:14,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:28:14,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:28:14,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:28:14,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:28:14,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,824 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-08 05:28:14,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,847 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:28:14,871 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:28:14,872 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:28:14,872 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:28:14,873 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:28:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:14,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 05:28:14,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 05:28:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:28:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:28:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:28:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-08 05:28:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-08 05:28:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:28:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:28:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:28:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:28:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-08 05:28:14,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-08 05:28:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:28:14,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:28:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:28:15,093 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:28:15,096 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:28:15,153 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2529: #res#1 := ~retValue_acc~24#1; [2025-03-08 05:28:15,153 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2501-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~23#1; [2025-03-08 05:28:15,158 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1857: #res := ~retValue_acc~15; [2025-03-08 05:28:15,175 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1476: #res := ~retValue_acc~8; [2025-03-08 05:28:15,206 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3158: #res := ~retValue_acc~28; [2025-03-08 05:28:15,266 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2445-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~22#1; [2025-03-08 05:28:15,269 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2382-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~20#1; [2025-03-08 05:28:15,270 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2411: #res#1 := ~retValue_acc~21#1; [2025-03-08 05:28:15,282 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2574: #res := ~retValue_acc~26; [2025-03-08 05:28:15,410 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2342: #res := ~retValue_acc~19; [2025-03-08 05:28:15,471 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1977-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~17#1; [2025-03-08 05:28:15,471 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1990-1: isIdle_#res#1 := isIdle_~retValue_acc~18#1; [2025-03-08 05:28:15,634 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2560-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-03-08 05:28:15,639 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1434: #res := ~retValue_acc~7; [2025-03-08 05:28:15,648 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1554: #res := ~retValue_acc~10; [2025-03-08 05:28:15,650 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1632: #res := ~retValue_acc~11; [2025-03-08 05:28:15,652 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1805: #res := ~retValue_acc~12; [2025-03-08 05:28:15,797 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1515: #res := ~retValue_acc~9; [2025-03-08 05:28:15,813 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1848: #res := ~retValue_acc~14; [2025-03-08 05:28:15,854 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1897-1: isEmpty_#res#1 := isEmpty_~retValue_acc~16#1; [2025-03-08 05:28:15,908 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1123: #res := ~retValue_acc~6; [2025-03-08 05:28:15,979 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3515-1: main_#res#1 := main_~retValue_acc~31#1; [2025-03-08 05:28:15,979 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-1: valid_product_#res#1 := valid_product_~retValue_acc~1#1; [2025-03-08 05:28:15,989 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: #res := ~retValue_acc~5; [2025-03-08 05:28:16,146 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2025-03-08 05:28:16,146 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:28:16,169 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:28:16,170 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:28:16,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:28:16 BoogieIcfgContainer [2025-03-08 05:28:16,171 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:28:16,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:28:16,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:28:16,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:28:16,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:28:14" (1/3) ... [2025-03-08 05:28:16,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba03ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:28:16, skipping insertion in model container [2025-03-08 05:28:16,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (2/3) ... [2025-03-08 05:28:16,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba03ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:28:16, skipping insertion in model container [2025-03-08 05:28:16,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:28:16" (3/3) ... [2025-03-08 05:28:16,179 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2025-03-08 05:28:16,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:28:16,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product31.cil.c that has 29 procedures, 619 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:28:16,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:28:16,256 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;@7780feb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:28:16,257 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:28:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 619 states, 476 states have (on average 1.6638655462184875) internal successors, (792), 494 states have internal predecessors, (792), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2025-03-08 05:28:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-08 05:28:16,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:16,283 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:16,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:16,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1363938199, now seen corresponding path program 1 times [2025-03-08 05:28:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:16,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643144] [2025-03-08 05:28:16,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:16,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-08 05:28:16,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-08 05:28:16,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:16,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643144] [2025-03-08 05:28:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:16,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:16,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662472025] [2025-03-08 05:28:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:16,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:16,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:16,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:16,977 INFO L87 Difference]: Start difference. First operand has 619 states, 476 states have (on average 1.6638655462184875) internal successors, (792), 494 states have internal predecessors, (792), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:17,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:17,179 INFO L93 Difference]: Finished difference Result 1235 states and 2048 transitions. [2025-03-08 05:28:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2025-03-08 05:28:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:17,199 INFO L225 Difference]: With dead ends: 1235 [2025-03-08 05:28:17,199 INFO L226 Difference]: Without dead ends: 624 [2025-03-08 05:28:17,206 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 [2025-03-08 05:28:17,208 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 91 mSDsluCounter, 4934 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5938 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 [2025-03-08 05:28:17,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5938 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:28:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2025-03-08 05:28:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 622. [2025-03-08 05:28:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 479 states have (on average 1.6576200417536535) internal successors, (794), 497 states have internal predecessors, (794), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2025-03-08 05:28:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1021 transitions. [2025-03-08 05:28:17,320 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1021 transitions. Word has length 115 [2025-03-08 05:28:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:17,322 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1021 transitions. [2025-03-08 05:28:17,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1021 transitions. [2025-03-08 05:28:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 05:28:17,330 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:17,330 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:17,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:28:17,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:17,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash -868772404, now seen corresponding path program 1 times [2025-03-08 05:28:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041442488] [2025-03-08 05:28:17,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:17,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 05:28:17,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 05:28:17,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:17,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:17,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041442488] [2025-03-08 05:28:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041442488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75491909] [2025-03-08 05:28:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:17,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:17,515 INFO L87 Difference]: Start difference. First operand 622 states and 1021 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:17,576 INFO L93 Difference]: Finished difference Result 1226 states and 2023 transitions. [2025-03-08 05:28:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:17,577 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2025-03-08 05:28:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:17,582 INFO L225 Difference]: With dead ends: 1226 [2025-03-08 05:28:17,582 INFO L226 Difference]: Without dead ends: 598 [2025-03-08 05:28:17,586 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 [2025-03-08 05:28:17,586 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 14 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2968 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 [2025-03-08 05:28:17,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2968 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-08 05:28:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2025-03-08 05:28:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 458 states have (on average 1.648471615720524) internal successors, (755), 474 states have internal predecessors, (755), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 978 transitions. [2025-03-08 05:28:17,646 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 978 transitions. Word has length 116 [2025-03-08 05:28:17,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:17,646 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 978 transitions. [2025-03-08 05:28:17,646 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 978 transitions. [2025-03-08 05:28:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 05:28:17,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:17,650 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:17,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 05:28:17,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:17,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash -194057917, now seen corresponding path program 1 times [2025-03-08 05:28:17,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:17,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252220539] [2025-03-08 05:28:17,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:17,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:17,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 05:28:17,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 05:28:17,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:17,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252220539] [2025-03-08 05:28:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252220539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499410299] [2025-03-08 05:28:17,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:17,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:17,943 INFO L87 Difference]: Start difference. First operand 598 states and 978 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,030 INFO L93 Difference]: Finished difference Result 1189 states and 1955 transitions. [2025-03-08 05:28:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:18,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2025-03-08 05:28:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,035 INFO L225 Difference]: With dead ends: 1189 [2025-03-08 05:28:18,036 INFO L226 Difference]: Without dead ends: 592 [2025-03-08 05:28:18,039 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 [2025-03-08 05:28:18,041 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 77 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5732 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5732 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-08 05:28:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2025-03-08 05:28:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 452 states have (on average 1.6415929203539823) internal successors, (742), 468 states have internal predecessors, (742), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 965 transitions. [2025-03-08 05:28:18,074 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 965 transitions. Word has length 116 [2025-03-08 05:28:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,075 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 965 transitions. [2025-03-08 05:28:18,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 965 transitions. [2025-03-08 05:28:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 05:28:18,082 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,083 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:18,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 05:28:18,084 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1128517635, now seen corresponding path program 1 times [2025-03-08 05:28:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784402605] [2025-03-08 05:28:18,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 05:28:18,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 05:28:18,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784402605] [2025-03-08 05:28:18,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784402605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605550403] [2025-03-08 05:28:18,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:18,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:18,313 INFO L87 Difference]: Start difference. First operand 592 states and 965 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,385 INFO L93 Difference]: Finished difference Result 1177 states and 1929 transitions. [2025-03-08 05:28:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2025-03-08 05:28:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,393 INFO L225 Difference]: With dead ends: 1177 [2025-03-08 05:28:18,394 INFO L226 Difference]: Without dead ends: 586 [2025-03-08 05:28:18,396 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 [2025-03-08 05:28:18,397 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 63 mSDsluCounter, 4717 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5672 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 [2025-03-08 05:28:18,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5672 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2025-03-08 05:28:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2025-03-08 05:28:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 446 states have (on average 1.6345291479820627) internal successors, (729), 462 states have internal predecessors, (729), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 952 transitions. [2025-03-08 05:28:18,463 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 952 transitions. Word has length 117 [2025-03-08 05:28:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,464 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 952 transitions. [2025-03-08 05:28:18,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 952 transitions. [2025-03-08 05:28:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-08 05:28:18,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,469 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:18,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 05:28:18,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1405288035, now seen corresponding path program 1 times [2025-03-08 05:28:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587388557] [2025-03-08 05:28:18,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 05:28:18,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 05:28:18,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587388557] [2025-03-08 05:28:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587388557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013695898] [2025-03-08 05:28:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:18,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:18,667 INFO L87 Difference]: Start difference. First operand 586 states and 952 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,731 INFO L93 Difference]: Finished difference Result 1165 states and 1903 transitions. [2025-03-08 05:28:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:18,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2025-03-08 05:28:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,735 INFO L225 Difference]: With dead ends: 1165 [2025-03-08 05:28:18,735 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:18,738 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 [2025-03-08 05:28:18,738 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 49 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5612 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 [2025-03-08 05:28:18,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5612 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.6272727272727272) internal successors, (716), 456 states have internal predecessors, (716), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 939 transitions. [2025-03-08 05:28:18,761 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 939 transitions. Word has length 118 [2025-03-08 05:28:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,762 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 939 transitions. [2025-03-08 05:28:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 939 transitions. [2025-03-08 05:28:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-08 05:28:18,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,765 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:18,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:28:18,765 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1510991403, now seen corresponding path program 1 times [2025-03-08 05:28:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277904320] [2025-03-08 05:28:18,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 05:28:18,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 05:28:18,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277904320] [2025-03-08 05:28:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277904320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002437731] [2025-03-08 05:28:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:18,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:18,945 INFO L87 Difference]: Start difference. First operand 580 states and 939 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,014 INFO L93 Difference]: Finished difference Result 1153 states and 1877 transitions. [2025-03-08 05:28:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2025-03-08 05:28:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,020 INFO L225 Difference]: With dead ends: 1153 [2025-03-08 05:28:19,020 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:19,023 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 [2025-03-08 05:28:19,024 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 24 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5564 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 [2025-03-08 05:28:19,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5564 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.625) internal successors, (715), 456 states have internal predecessors, (715), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 938 transitions. [2025-03-08 05:28:19,050 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 938 transitions. Word has length 118 [2025-03-08 05:28:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,051 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 938 transitions. [2025-03-08 05:28:19,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 938 transitions. [2025-03-08 05:28:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-08 05:28:19,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,054 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:19,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 05:28:19,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1067139997, now seen corresponding path program 1 times [2025-03-08 05:28:19,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18373413] [2025-03-08 05:28:19,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-08 05:28:19,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-08 05:28:19,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18373413] [2025-03-08 05:28:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18373413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:19,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320941981] [2025-03-08 05:28:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:19,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:19,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:19,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:19,203 INFO L87 Difference]: Start difference. First operand 580 states and 938 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,251 INFO L93 Difference]: Finished difference Result 1144 states and 1862 transitions. [2025-03-08 05:28:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 119 [2025-03-08 05:28:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,256 INFO L225 Difference]: With dead ends: 1144 [2025-03-08 05:28:19,256 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:19,259 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 [2025-03-08 05:28:19,261 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 15 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2754 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 [2025-03-08 05:28:19,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2754 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.6227272727272728) internal successors, (714), 456 states have internal predecessors, (714), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 937 transitions. [2025-03-08 05:28:19,286 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 937 transitions. Word has length 119 [2025-03-08 05:28:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,286 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 937 transitions. [2025-03-08 05:28:19,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 937 transitions. [2025-03-08 05:28:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-08 05:28:19,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,291 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:19,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 05:28:19,291 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2064288987, now seen corresponding path program 1 times [2025-03-08 05:28:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575492762] [2025-03-08 05:28:19,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-08 05:28:19,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-08 05:28:19,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575492762] [2025-03-08 05:28:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575492762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100740013] [2025-03-08 05:28:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:19,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:19,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:19,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:19,413 INFO L87 Difference]: Start difference. First operand 580 states and 937 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,459 INFO L93 Difference]: Finished difference Result 1144 states and 1860 transitions. [2025-03-08 05:28:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2025-03-08 05:28:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,463 INFO L225 Difference]: With dead ends: 1144 [2025-03-08 05:28:19,464 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:19,466 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 [2025-03-08 05:28:19,467 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 14 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2756 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 [2025-03-08 05:28:19,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2756 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.6204545454545454) internal successors, (713), 456 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 936 transitions. [2025-03-08 05:28:19,486 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 936 transitions. Word has length 120 [2025-03-08 05:28:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,487 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 936 transitions. [2025-03-08 05:28:19,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 936 transitions. [2025-03-08 05:28:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:28:19,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,490 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:19,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 05:28:19,490 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1800267744, now seen corresponding path program 1 times [2025-03-08 05:28:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307374810] [2025-03-08 05:28:19,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:28:19,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:28:19,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307374810] [2025-03-08 05:28:19,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307374810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:19,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:19,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:19,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455484741] [2025-03-08 05:28:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:19,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:19,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:19,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:19,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:19,599 INFO L87 Difference]: Start difference. First operand 580 states and 936 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,640 INFO L93 Difference]: Finished difference Result 1144 states and 1858 transitions. [2025-03-08 05:28:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2025-03-08 05:28:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,644 INFO L225 Difference]: With dead ends: 1144 [2025-03-08 05:28:19,645 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:19,647 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 [2025-03-08 05:28:19,648 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 13 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2758 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 [2025-03-08 05:28:19,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2758 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.6181818181818182) internal successors, (712), 456 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 935 transitions. [2025-03-08 05:28:19,667 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 935 transitions. Word has length 121 [2025-03-08 05:28:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,668 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 935 transitions. [2025-03-08 05:28:19,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 935 transitions. [2025-03-08 05:28:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-08 05:28:19,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,671 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:19,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 05:28:19,671 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash 643495432, now seen corresponding path program 1 times [2025-03-08 05:28:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841910150] [2025-03-08 05:28:19,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-08 05:28:19,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 05:28:19,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:19,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841910150] [2025-03-08 05:28:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841910150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:19,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515539515] [2025-03-08 05:28:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:19,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:19,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:19,797 INFO L87 Difference]: Start difference. First operand 580 states and 935 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,847 INFO L93 Difference]: Finished difference Result 1144 states and 1856 transitions. [2025-03-08 05:28:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:19,848 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2025-03-08 05:28:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,853 INFO L225 Difference]: With dead ends: 1144 [2025-03-08 05:28:19,853 INFO L226 Difference]: Without dead ends: 580 [2025-03-08 05:28:19,856 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 [2025-03-08 05:28:19,857 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 12 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2760 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 [2025-03-08 05:28:19,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2760 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-03-08 05:28:19,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2025-03-08 05:28:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 440 states have (on average 1.615909090909091) internal successors, (711), 456 states have internal predecessors, (711), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-08 05:28:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 934 transitions. [2025-03-08 05:28:19,881 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 934 transitions. Word has length 122 [2025-03-08 05:28:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 934 transitions. [2025-03-08 05:28:19,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:28:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 934 transitions. [2025-03-08 05:28:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-08 05:28:19,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,885 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:19,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 05:28:19,885 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1939781795, now seen corresponding path program 1 times [2025-03-08 05:28:19,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213940589] [2025-03-08 05:28:19,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-08 05:28:19,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 05:28:19,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:28:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213940589] [2025-03-08 05:28:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213940589] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694849218] [2025-03-08 05:28:20,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:20,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:20,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:20,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:28:20,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-08 05:28:20,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 05:28:20,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:20,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:20,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:28:20,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:28:20,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694849218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:20,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:20,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-08 05:28:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006379246] [2025-03-08 05:28:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:20,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:28:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:20,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:28:20,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:20,560 INFO L87 Difference]: Start difference. First operand 580 states and 934 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:20,618 INFO L93 Difference]: Finished difference Result 1651 states and 2690 transitions. [2025-03-08 05:28:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:28:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2025-03-08 05:28:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:20,626 INFO L225 Difference]: With dead ends: 1651 [2025-03-08 05:28:20,626 INFO L226 Difference]: Without dead ends: 1089 [2025-03-08 05:28:20,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:20,629 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 859 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:20,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2432 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2025-03-08 05:28:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1074. [2025-03-08 05:28:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 822 states have (on average 1.6277372262773722) internal successors, (1338), 853 states have internal predecessors, (1338), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2025-03-08 05:28:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1742 transitions. [2025-03-08 05:28:20,670 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1742 transitions. Word has length 123 [2025-03-08 05:28:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:20,671 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1742 transitions. [2025-03-08 05:28:20,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1742 transitions. [2025-03-08 05:28:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-08 05:28:20,675 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:20,676 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:20,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:28:20,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 05:28:20,880 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:20,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -57223892, now seen corresponding path program 1 times [2025-03-08 05:28:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018877966] [2025-03-08 05:28:20,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:20,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-08 05:28:20,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-08 05:28:20,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:20,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:28:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018877966] [2025-03-08 05:28:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018877966] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479655497] [2025-03-08 05:28:21,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:21,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:21,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:21,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:21,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:28:21,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-08 05:28:21,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-08 05:28:21,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:21,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:21,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:28:21,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:28:21,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479655497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-08 05:28:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562471549] [2025-03-08 05:28:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:21,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:28:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:21,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:28:21,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:21,482 INFO L87 Difference]: Start difference. First operand 1074 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:21,558 INFO L93 Difference]: Finished difference Result 2639 states and 4308 transitions. [2025-03-08 05:28:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:28:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2025-03-08 05:28:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:21,568 INFO L225 Difference]: With dead ends: 2639 [2025-03-08 05:28:21,568 INFO L226 Difference]: Without dead ends: 1583 [2025-03-08 05:28:21,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:21,575 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 860 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1820 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 [2025-03-08 05:28:21,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1820 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2025-03-08 05:28:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1535. [2025-03-08 05:28:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1177 states have (on average 1.638912489379779) internal successors, (1929), 1223 states have internal predecessors, (1929), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2025-03-08 05:28:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2508 transitions. [2025-03-08 05:28:21,631 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2508 transitions. Word has length 124 [2025-03-08 05:28:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:21,631 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 2508 transitions. [2025-03-08 05:28:21,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:28:21,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2508 transitions. [2025-03-08 05:28:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-08 05:28:21,637 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:21,637 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:21,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 05:28:21,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 05:28:21,841 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:21,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -189687862, now seen corresponding path program 1 times [2025-03-08 05:28:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:21,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541097730] [2025-03-08 05:28:21,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:21,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:21,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:28:21,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:28:21,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:21,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:22,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:22,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541097730] [2025-03-08 05:28:22,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541097730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:22,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:22,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:22,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135080575] [2025-03-08 05:28:22,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:22,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:22,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:22,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:22,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:22,005 INFO L87 Difference]: Start difference. First operand 1535 states and 2508 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-08 05:28:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:22,599 INFO L93 Difference]: Finished difference Result 4529 states and 7549 transitions. [2025-03-08 05:28:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:22,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2025-03-08 05:28:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:22,623 INFO L225 Difference]: With dead ends: 4529 [2025-03-08 05:28:22,624 INFO L226 Difference]: Without dead ends: 3012 [2025-03-08 05:28:22,633 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 [2025-03-08 05:28:22,635 INFO L435 NwaCegarLoop]: 1036 mSDtfsCounter, 930 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 4765 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:22,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 4765 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:28:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2025-03-08 05:28:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2965. [2025-03-08 05:28:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2275 states have (on average 1.6386813186813187) internal successors, (3728), 2363 states have internal predecessors, (3728), 551 states have call successors, (551), 136 states have call predecessors, (551), 138 states have return successors, (655), 543 states have call predecessors, (655), 547 states have call successors, (655) [2025-03-08 05:28:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4934 transitions. [2025-03-08 05:28:22,812 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4934 transitions. Word has length 126 [2025-03-08 05:28:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:22,812 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 4934 transitions. [2025-03-08 05:28:22,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-08 05:28:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4934 transitions. [2025-03-08 05:28:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 05:28:22,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:22,819 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:22,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 05:28:22,819 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:22,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1960299576, now seen corresponding path program 1 times [2025-03-08 05:28:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290390111] [2025-03-08 05:28:22,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:22,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:28:22,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:28:22,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:22,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:28:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290390111] [2025-03-08 05:28:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290390111] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563598774] [2025-03-08 05:28:22,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:22,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:22,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:23,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:28:23,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:28:23,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:28:23,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:23,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:23,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:28:23,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:28:23,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:23,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563598774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:23,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:23,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-08 05:28:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081968528] [2025-03-08 05:28:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:23,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:23,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:23,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:28:23,398 INFO L87 Difference]: Start difference. First operand 2965 states and 4934 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-08 05:28:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:24,116 INFO L93 Difference]: Finished difference Result 8042 states and 13594 transitions. [2025-03-08 05:28:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2025-03-08 05:28:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:24,150 INFO L225 Difference]: With dead ends: 8042 [2025-03-08 05:28:24,150 INFO L226 Difference]: Without dead ends: 5095 [2025-03-08 05:28:24,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:28:24,177 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 793 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 4076 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:24,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 4076 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 05:28:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2025-03-08 05:28:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5052. [2025-03-08 05:28:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 3870 states have (on average 1.5927648578811369) internal successors, (6164), 4016 states have internal predecessors, (6164), 930 states have call successors, (930), 246 states have call predecessors, (930), 251 states have return successors, (1213), 919 states have call predecessors, (1213), 924 states have call successors, (1213) [2025-03-08 05:28:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 8307 transitions. [2025-03-08 05:28:24,373 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 8307 transitions. Word has length 127 [2025-03-08 05:28:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:24,374 INFO L471 AbstractCegarLoop]: Abstraction has 5052 states and 8307 transitions. [2025-03-08 05:28:24,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-08 05:28:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 8307 transitions. [2025-03-08 05:28:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 05:28:24,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:24,378 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:24,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:28:24,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:24,579 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:24,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2015924293, now seen corresponding path program 1 times [2025-03-08 05:28:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732970760] [2025-03-08 05:28:24,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:24,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:28:24,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:28:24,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:24,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 05:28:24,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:24,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732970760] [2025-03-08 05:28:24,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732970760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:24,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:24,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:24,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075897] [2025-03-08 05:28:24,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:24,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:24,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:24,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:24,700 INFO L87 Difference]: Start difference. First operand 5052 states and 8307 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:28:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:24,989 INFO L93 Difference]: Finished difference Result 10110 states and 16789 transitions. [2025-03-08 05:28:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:24,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2025-03-08 05:28:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:25,027 INFO L225 Difference]: With dead ends: 10110 [2025-03-08 05:28:25,028 INFO L226 Difference]: Without dead ends: 5076 [2025-03-08 05:28:25,053 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 [2025-03-08 05:28:25,053 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 12 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:25,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2724 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2025-03-08 05:28:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 5060. [2025-03-08 05:28:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 3876 states have (on average 1.5913312693498451) internal successors, (6168), 4022 states have internal predecessors, (6168), 930 states have call successors, (930), 250 states have call predecessors, (930), 253 states have return successors, (1202), 917 states have call predecessors, (1202), 924 states have call successors, (1202) [2025-03-08 05:28:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 8300 transitions. [2025-03-08 05:28:25,266 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 8300 transitions. Word has length 127 [2025-03-08 05:28:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:25,266 INFO L471 AbstractCegarLoop]: Abstraction has 5060 states and 8300 transitions. [2025-03-08 05:28:25,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:28:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 8300 transitions. [2025-03-08 05:28:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 05:28:25,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:25,270 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:25,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 05:28:25,270 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:25,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2086299552, now seen corresponding path program 1 times [2025-03-08 05:28:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593878519] [2025-03-08 05:28:25,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:25,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:25,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 05:28:25,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 05:28:25,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:25,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:28:25,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593878519] [2025-03-08 05:28:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593878519] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:25,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:25,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:25,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936668337] [2025-03-08 05:28:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:25,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:25,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:25,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:25,393 INFO L87 Difference]: Start difference. First operand 5060 states and 8300 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:28:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:26,121 INFO L93 Difference]: Finished difference Result 15113 states and 25581 transitions. [2025-03-08 05:28:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2025-03-08 05:28:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:26,202 INFO L225 Difference]: With dead ends: 15113 [2025-03-08 05:28:26,202 INFO L226 Difference]: Without dead ends: 10071 [2025-03-08 05:28:26,234 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 [2025-03-08 05:28:26,235 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 923 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:26,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 4650 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:28:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2025-03-08 05:28:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10002. [2025-03-08 05:28:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10002 states, 7664 states have (on average 1.5872912317327765) internal successors, (12165), 7950 states have internal predecessors, (12165), 1832 states have call successors, (1832), 494 states have call predecessors, (1832), 505 states have return successors, (2816), 1817 states have call predecessors, (2816), 1822 states have call successors, (2816) [2025-03-08 05:28:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10002 states to 10002 states and 16813 transitions. [2025-03-08 05:28:26,674 INFO L78 Accepts]: Start accepts. Automaton has 10002 states and 16813 transitions. Word has length 135 [2025-03-08 05:28:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:26,674 INFO L471 AbstractCegarLoop]: Abstraction has 10002 states and 16813 transitions. [2025-03-08 05:28:26,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:28:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10002 states and 16813 transitions. [2025-03-08 05:28:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-08 05:28:26,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:26,680 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:26,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 05:28:26,680 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:26,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1115869291, now seen corresponding path program 1 times [2025-03-08 05:28:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:26,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698133942] [2025-03-08 05:28:26,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:26,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:26,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-08 05:28:26,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-08 05:28:26,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:26,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:28:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:26,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698133942] [2025-03-08 05:28:26,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698133942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:26,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:26,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622571483] [2025-03-08 05:28:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:26,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:26,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:26,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:26,757 INFO L87 Difference]: Start difference. First operand 10002 states and 16813 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:28:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:27,254 INFO L93 Difference]: Finished difference Result 20058 states and 34199 transitions. [2025-03-08 05:28:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:27,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2025-03-08 05:28:27,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:27,318 INFO L225 Difference]: With dead ends: 20058 [2025-03-08 05:28:27,318 INFO L226 Difference]: Without dead ends: 10074 [2025-03-08 05:28:27,377 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 [2025-03-08 05:28:27,378 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 12 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:27,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2715 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2025-03-08 05:28:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 10042. [2025-03-08 05:28:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10042 states, 7700 states have (on average 1.585064935064935) internal successors, (12205), 7978 states have internal predecessors, (12205), 1832 states have call successors, (1832), 510 states have call predecessors, (1832), 509 states have return successors, (2800), 1813 states have call predecessors, (2800), 1822 states have call successors, (2800) [2025-03-08 05:28:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10042 states to 10042 states and 16837 transitions. [2025-03-08 05:28:27,959 INFO L78 Accepts]: Start accepts. Automaton has 10042 states and 16837 transitions. Word has length 136 [2025-03-08 05:28:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:27,959 INFO L471 AbstractCegarLoop]: Abstraction has 10042 states and 16837 transitions. [2025-03-08 05:28:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:28:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10042 states and 16837 transitions. [2025-03-08 05:28:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-08 05:28:27,967 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:27,967 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:27,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 05:28:27,967 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:27,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1456755528, now seen corresponding path program 1 times [2025-03-08 05:28:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764541662] [2025-03-08 05:28:27,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:27,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:28:28,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:28:28,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:28,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:28:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764541662] [2025-03-08 05:28:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764541662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:28,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498822902] [2025-03-08 05:28:28,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:28,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:28,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:28,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:28,189 INFO L87 Difference]: Start difference. First operand 10042 states and 16837 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:28:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:29,422 INFO L93 Difference]: Finished difference Result 30137 states and 52834 transitions. [2025-03-08 05:28:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:29,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2025-03-08 05:28:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:29,659 INFO L225 Difference]: With dead ends: 30137 [2025-03-08 05:28:29,660 INFO L226 Difference]: Without dead ends: 20113 [2025-03-08 05:28:29,714 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 [2025-03-08 05:28:29,714 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 918 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 4667 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:29,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 4667 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:28:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20113 states. [2025-03-08 05:28:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20113 to 20012. [2025-03-08 05:28:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20012 states, 15348 states have (on average 1.5816393015376595) internal successors, (24275), 15898 states have internal predecessors, (24275), 3642 states have call successors, (3642), 1014 states have call predecessors, (3642), 1021 states have return successors, (6872), 3619 states have call predecessors, (6872), 3624 states have call successors, (6872) [2025-03-08 05:28:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20012 states to 20012 states and 34789 transitions. [2025-03-08 05:28:30,621 INFO L78 Accepts]: Start accepts. Automaton has 20012 states and 34789 transitions. Word has length 145 [2025-03-08 05:28:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:30,622 INFO L471 AbstractCegarLoop]: Abstraction has 20012 states and 34789 transitions. [2025-03-08 05:28:30,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:28:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 20012 states and 34789 transitions. [2025-03-08 05:28:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-08 05:28:30,628 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:30,628 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 05:28:30,628 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:30,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1583086026, now seen corresponding path program 1 times [2025-03-08 05:28:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559507202] [2025-03-08 05:28:30,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:30,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-08 05:28:30,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-08 05:28:30,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:30,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-08 05:28:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:30,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559507202] [2025-03-08 05:28:30,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559507202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:30,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:30,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486441376] [2025-03-08 05:28:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:30,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:30,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:30,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:30,702 INFO L87 Difference]: Start difference. First operand 20012 states and 34789 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:28:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:31,667 INFO L93 Difference]: Finished difference Result 40150 states and 71413 transitions. [2025-03-08 05:28:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2025-03-08 05:28:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:31,781 INFO L225 Difference]: With dead ends: 40150 [2025-03-08 05:28:31,781 INFO L226 Difference]: Without dead ends: 20156 [2025-03-08 05:28:31,941 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 [2025-03-08 05:28:31,941 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 11 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:31,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2715 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2025-03-08 05:28:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 20092. [2025-03-08 05:28:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 15420 states have (on average 1.5794422827496757) internal successors, (24355), 15970 states have internal predecessors, (24355), 3642 states have call successors, (3642), 1030 states have call predecessors, (3642), 1029 states have return successors, (6852), 3611 states have call predecessors, (6852), 3624 states have call successors, (6852) [2025-03-08 05:28:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 34849 transitions. [2025-03-08 05:28:32,899 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 34849 transitions. Word has length 146 [2025-03-08 05:28:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:32,900 INFO L471 AbstractCegarLoop]: Abstraction has 20092 states and 34849 transitions. [2025-03-08 05:28:32,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:28:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 34849 transitions. [2025-03-08 05:28:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 05:28:32,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:32,908 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:32,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 05:28:32,908 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:32,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -648746624, now seen corresponding path program 1 times [2025-03-08 05:28:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:32,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933805247] [2025-03-08 05:28:32,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:32,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 05:28:32,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 05:28:32,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:32,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-08 05:28:33,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:33,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933805247] [2025-03-08 05:28:33,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933805247] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:33,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:33,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010901876] [2025-03-08 05:28:33,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:33,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:33,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:33,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:33,085 INFO L87 Difference]: Start difference. First operand 20092 states and 34849 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:28:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:35,228 INFO L93 Difference]: Finished difference Result 60413 states and 112371 transitions. [2025-03-08 05:28:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2025-03-08 05:28:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:35,517 INFO L225 Difference]: With dead ends: 60413 [2025-03-08 05:28:35,517 INFO L226 Difference]: Without dead ends: 40339 [2025-03-08 05:28:35,704 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 [2025-03-08 05:28:35,706 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 915 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:35,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 4640 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:28:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40339 states. [2025-03-08 05:28:36,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40339 to 40174. [2025-03-08 05:28:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40174 states, 30836 states have (on average 1.5770203658062005) internal successors, (48629), 31930 states have internal predecessors, (48629), 7268 states have call successors, (7268), 2054 states have call predecessors, (7268), 2069 states have return successors, (17860), 7229 states have call predecessors, (17860), 7234 states have call successors, (17860) [2025-03-08 05:28:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40174 states to 40174 states and 73757 transitions. [2025-03-08 05:28:37,685 INFO L78 Accepts]: Start accepts. Automaton has 40174 states and 73757 transitions. Word has length 156 [2025-03-08 05:28:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:37,686 INFO L471 AbstractCegarLoop]: Abstraction has 40174 states and 73757 transitions. [2025-03-08 05:28:37,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:28:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 40174 states and 73757 transitions. [2025-03-08 05:28:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 05:28:37,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:37,693 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:37,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 05:28:37,694 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:37,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -754726247, now seen corresponding path program 1 times [2025-03-08 05:28:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679298173] [2025-03-08 05:28:37,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:37,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 05:28:37,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 05:28:37,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:37,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-08 05:28:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679298173] [2025-03-08 05:28:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679298173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919567475] [2025-03-08 05:28:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:37,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:37,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:37,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:37,786 INFO L87 Difference]: Start difference. First operand 40174 states and 73757 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:28:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:40,470 INFO L93 Difference]: Finished difference Result 80650 states and 153819 transitions. [2025-03-08 05:28:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2025-03-08 05:28:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:40,764 INFO L225 Difference]: With dead ends: 80650 [2025-03-08 05:28:40,764 INFO L226 Difference]: Without dead ends: 40494 [2025-03-08 05:28:41,397 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 [2025-03-08 05:28:41,399 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 10 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:41,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2715 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40494 states. [2025-03-08 05:28:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40494 to 40366. [2025-03-08 05:28:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40366 states, 31012 states have (on average 1.5742615761640655) internal successors, (48821), 32106 states have internal predecessors, (48821), 7268 states have call successors, (7268), 2086 states have call predecessors, (7268), 2085 states have return successors, (17844), 7213 states have call predecessors, (17844), 7234 states have call successors, (17844) [2025-03-08 05:28:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40366 states to 40366 states and 73933 transitions. [2025-03-08 05:28:43,493 INFO L78 Accepts]: Start accepts. Automaton has 40366 states and 73933 transitions. Word has length 157 [2025-03-08 05:28:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:43,494 INFO L471 AbstractCegarLoop]: Abstraction has 40366 states and 73933 transitions. [2025-03-08 05:28:43,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:28:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 40366 states and 73933 transitions. [2025-03-08 05:28:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 05:28:43,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:43,502 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:43,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 05:28:43,502 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:43,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:43,502 INFO L85 PathProgramCache]: Analyzing trace with hash 939736408, now seen corresponding path program 1 times [2025-03-08 05:28:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458849048] [2025-03-08 05:28:43,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:43,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:28:43,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:28:43,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:43,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-08 05:28:43,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458849048] [2025-03-08 05:28:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458849048] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820638370] [2025-03-08 05:28:43,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:43,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:43,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:43,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:28:43,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:28:43,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:28:43,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:43,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:43,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:28:43,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 05:28:44,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820638370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-08 05:28:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861723190] [2025-03-08 05:28:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:44,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:28:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:44,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:28:44,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:44,019 INFO L87 Difference]: Start difference. First operand 40366 states and 73933 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-08 05:28:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:47,427 INFO L93 Difference]: Finished difference Result 119951 states and 223215 transitions. [2025-03-08 05:28:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:28:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2025-03-08 05:28:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:48,073 INFO L225 Difference]: With dead ends: 119951 [2025-03-08 05:28:48,073 INFO L226 Difference]: Without dead ends: 79634 [2025-03-08 05:28:48,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:48,489 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 920 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:48,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1853 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79634 states. [2025-03-08 05:28:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79634 to 79069. [2025-03-08 05:28:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79069 states, 60950 states have (on average 1.5774897456931911) internal successors, (96148), 63023 states have internal predecessors, (96148), 14049 states have call successors, (14049), 4038 states have call predecessors, (14049), 4069 states have return successors, (35421), 14055 states have call predecessors, (35421), 13983 states have call successors, (35421) [2025-03-08 05:28:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79069 states to 79069 states and 145618 transitions. [2025-03-08 05:28:52,741 INFO L78 Accepts]: Start accepts. Automaton has 79069 states and 145618 transitions. Word has length 168 [2025-03-08 05:28:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:52,741 INFO L471 AbstractCegarLoop]: Abstraction has 79069 states and 145618 transitions. [2025-03-08 05:28:52,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-08 05:28:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 79069 states and 145618 transitions. [2025-03-08 05:28:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 05:28:52,749 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:52,750 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:52,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:28:52,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:52,951 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:52,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 646333401, now seen corresponding path program 1 times [2025-03-08 05:28:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261842587] [2025-03-08 05:28:52,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:52,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:28:52,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:28:52,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:52,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-08 05:28:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261842587] [2025-03-08 05:28:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261842587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949043673] [2025-03-08 05:28:53,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:53,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:53,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:28:53,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:28:53,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:28:53,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:53,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:53,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:28:53,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 05:28:53,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949043673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:53,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-08 05:28:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643590027] [2025-03-08 05:28:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:53,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:53,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:53,545 INFO L87 Difference]: Start difference. First operand 79069 states and 145618 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)