./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:37:37,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:37:37,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:37:37,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:37:37,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:37:37,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:37:37,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:37:37,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:37:37,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:37:37,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:37:37,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:37:37,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:37:37,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:37:37,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:37:37,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:37:37,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:37:37,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:37:37,420 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2025-02-05 15:37:37,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:37:37,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:37:37,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:37:37,641 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:37:37,641 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:37:37,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2025-02-05 15:37:38,877 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59b9a3c33/31e68131a34e48efac52e03df5ff7bdf/FLAG3218e793b [2025-02-05 15:37:39,211 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:37:39,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2025-02-05 15:37:39,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59b9a3c33/31e68131a34e48efac52e03df5ff7bdf/FLAG3218e793b [2025-02-05 15:37:39,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59b9a3c33/31e68131a34e48efac52e03df5ff7bdf [2025-02-05 15:37:39,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:37:39,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:37:39,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:37:39,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:37:39,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:37:39,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:37:39" (1/1) ... [2025-02-05 15:37:39,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3f9c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:39, skipping insertion in model container [2025-02-05 15:37:39,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:37:39" (1/1) ... [2025-02-05 15:37:39,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:37:39,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2025-02-05 15:37:39,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:37:39,934 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:37:39,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2025-02-05 15:37:39,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [150] [2025-02-05 15:37:39,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2025-02-05 15:37:39,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [525] [2025-02-05 15:37:39,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [563] [2025-02-05 15:37:39,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [752] [2025-02-05 15:37:39,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1102] [2025-02-05 15:37:39,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1769] [2025-02-05 15:37:39,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1784] [2025-02-05 15:37:39,943 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1904] [2025-02-05 15:37:39,948 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2025-02-05 15:37:40,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:37:40,053 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:37:40,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40 WrapperNode [2025-02-05 15:37:40,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:37:40,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:37:40,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:37:40,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:37:40,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,107 INFO L138 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 901 [2025-02-05 15:37:40,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:37:40,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:37:40,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:37:40,108 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:37:40,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,141 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-02-05 15:37:40,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,162 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:37:40,183 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:37:40,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:37:40,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:37:40,187 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (1/1) ... [2025-02-05 15:37:40,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:37:40,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:40,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:37:40,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:37:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-02-05 15:37:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:37:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:37:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:37:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:37:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:37:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:37:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:37:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:37:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:37:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:37:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:37:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:37:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-02-05 15:37:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-02-05 15:37:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:37:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-02-05 15:37:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:37:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:37:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:37:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:37:40,358 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:37:40,361 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:37:40,387 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2181: #res := ~retValue_acc~17; [2025-02-05 15:37:40,420 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1823: #res := ~retValue_acc~10; [2025-02-05 15:37:40,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2705: #res#1 := ~retValue_acc~22#1; [2025-02-05 15:37:40,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2739-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~23#1; [2025-02-05 15:37:40,494 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2837: #res := ~retValue_acc~26; [2025-02-05 15:37:40,594 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2301-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-02-05 15:37:40,594 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2314-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-02-05 15:37:40,664 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2138-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~15#1; [2025-02-05 15:37:40,670 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1766: #res := ~retValue_acc~9; [2025-02-05 15:37:40,684 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1901: #res := ~retValue_acc~12; [2025-02-05 15:37:40,688 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1976: #res := ~retValue_acc~13; [2025-02-05 15:37:40,690 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2129: #res := ~retValue_acc~14; [2025-02-05 15:37:40,833 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1862: #res := ~retValue_acc~11; [2025-02-05 15:37:40,849 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2172: #res := ~retValue_acc~16; [2025-02-05 15:37:40,915 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1455: #res := ~retValue_acc~8; [2025-02-05 15:37:41,017 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2795-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~24#1; [2025-02-05 15:37:41,017 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2823-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-02-05 15:37:41,104 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2666: #res := ~retValue_acc~21; [2025-02-05 15:37:41,143 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-1: valid_product_#res#1 := valid_product_~retValue_acc~4#1; [2025-02-05 15:37:41,144 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1099-1: main_#res#1 := main_~retValue_acc~6#1; [2025-02-05 15:37:41,159 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1219: #res := ~retValue_acc~7; [2025-02-05 15:37:41,280 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2025-02-05 15:37:41,280 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:37:41,294 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:37:41,297 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:37:41,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:37:41 BoogieIcfgContainer [2025-02-05 15:37:41,298 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:37:41,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:37:41,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:37:41,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:37:41,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:37:39" (1/3) ... [2025-02-05 15:37:41,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4d8cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:37:41, skipping insertion in model container [2025-02-05 15:37:41,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:37:40" (2/3) ... [2025-02-05 15:37:41,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4d8cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:37:41, skipping insertion in model container [2025-02-05 15:37:41,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:37:41" (3/3) ... [2025-02-05 15:37:41,304 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2025-02-05 15:37:41,313 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:37:41,315 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product22.cil.c that has 28 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:37:41,367 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:37:41,376 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;@4c20cdb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:37:41,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:37:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 458 states have (on average 1.6724890829694323) internal successors, (766), 479 states have internal predecessors, (766), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2025-02-05 15:37:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-05 15:37:41,391 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:41,392 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:41,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:41,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1181978536, now seen corresponding path program 1 times [2025-02-05 15:37:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:41,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761796277] [2025-02-05 15:37:41,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:41,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:41,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-05 15:37:41,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-05 15:37:41,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:41,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:41,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761796277] [2025-02-05 15:37:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761796277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:41,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:37:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011483406] [2025-02-05 15:37:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:41,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:37:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:41,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:37:41,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:37:41,985 INFO L87 Difference]: Start difference. First operand has 596 states, 458 states have (on average 1.6724890829694323) internal successors, (766), 479 states have internal predecessors, (766), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:42,176 INFO L93 Difference]: Finished difference Result 1189 states and 1976 transitions. [2025-02-05 15:37:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:37:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-02-05 15:37:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:42,190 INFO L225 Difference]: With dead ends: 1189 [2025-02-05 15:37:42,190 INFO L226 Difference]: Without dead ends: 600 [2025-02-05 15:37:42,196 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 [2025-02-05 15:37:42,198 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 91 mSDsluCounter, 4754 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5722 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 [2025-02-05 15:37:42,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5722 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:37:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-02-05 15:37:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2025-02-05 15:37:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 461 states have (on average 1.665943600867679) internal successors, (768), 481 states have internal predecessors, (768), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2025-02-05 15:37:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 985 transitions. [2025-02-05 15:37:42,283 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 985 transitions. Word has length 67 [2025-02-05 15:37:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:42,285 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 985 transitions. [2025-02-05 15:37:42,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 985 transitions. [2025-02-05 15:37:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 15:37:42,288 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:42,288 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:42,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:37:42,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:42,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash -400523448, now seen corresponding path program 1 times [2025-02-05 15:37:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611713619] [2025-02-05 15:37:42,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:42,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:37:42,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:37:42,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:42,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:42,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:42,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611713619] [2025-02-05 15:37:42,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611713619] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:42,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:42,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:42,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386002272] [2025-02-05 15:37:42,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:42,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:42,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:42,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:42,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:42,452 INFO L87 Difference]: Start difference. First operand 598 states and 985 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:42,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:42,525 INFO L93 Difference]: Finished difference Result 1178 states and 1951 transitions. [2025-02-05 15:37:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:37:42,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-02-05 15:37:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:42,529 INFO L225 Difference]: With dead ends: 1178 [2025-02-05 15:37:42,530 INFO L226 Difference]: Without dead ends: 574 [2025-02-05 15:37:42,532 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 [2025-02-05 15:37:42,533 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 14 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2860 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 [2025-02-05 15:37:42,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2860 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-02-05 15:37:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2025-02-05 15:37:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 440 states have (on average 1.6568181818181817) internal successors, (729), 458 states have internal predecessors, (729), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 942 transitions. [2025-02-05 15:37:42,557 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 942 transitions. Word has length 68 [2025-02-05 15:37:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:42,558 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 942 transitions. [2025-02-05 15:37:42,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 942 transitions. [2025-02-05 15:37:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 15:37:42,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:42,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:42,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:37:42,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:42,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1088897233, now seen corresponding path program 1 times [2025-02-05 15:37:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878660743] [2025-02-05 15:37:42,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:42,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:37:42,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:37:42,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:42,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:42,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:42,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878660743] [2025-02-05 15:37:42,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878660743] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:42,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:42,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:37:42,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116510360] [2025-02-05 15:37:42,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:42,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:37:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:42,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:37:42,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:37:42,767 INFO L87 Difference]: Start difference. First operand 574 states and 942 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:42,844 INFO L93 Difference]: Finished difference Result 1141 states and 1883 transitions. [2025-02-05 15:37:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:37:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2025-02-05 15:37:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:42,850 INFO L225 Difference]: With dead ends: 1141 [2025-02-05 15:37:42,850 INFO L226 Difference]: Without dead ends: 568 [2025-02-05 15:37:42,853 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 [2025-02-05 15:37:42,853 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 77 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5516 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 [2025-02-05 15:37:42,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5516 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-02-05 15:37:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-02-05 15:37:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6497695852534562) internal successors, (716), 452 states have internal predecessors, (716), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 929 transitions. [2025-02-05 15:37:42,875 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 929 transitions. Word has length 68 [2025-02-05 15:37:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:42,875 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 929 transitions. [2025-02-05 15:37:42,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 929 transitions. [2025-02-05 15:37:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 15:37:42,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:42,877 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:42,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:37:42,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:42,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash -723543086, now seen corresponding path program 1 times [2025-02-05 15:37:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:42,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403130681] [2025-02-05 15:37:42,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:42,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 15:37:42,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 15:37:42,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:42,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:43,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403130681] [2025-02-05 15:37:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403130681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:43,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:43,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:37:43,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501668102] [2025-02-05 15:37:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:43,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:37:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:43,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:37:43,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:37:43,089 INFO L87 Difference]: Start difference. First operand 568 states and 929 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:43,155 INFO L93 Difference]: Finished difference Result 1129 states and 1857 transitions. [2025-02-05 15:37:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:37:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-02-05 15:37:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:43,159 INFO L225 Difference]: With dead ends: 1129 [2025-02-05 15:37:43,160 INFO L226 Difference]: Without dead ends: 562 [2025-02-05 15:37:43,162 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 [2025-02-05 15:37:43,163 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 63 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5456 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 [2025-02-05 15:37:43,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5456 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-02-05 15:37:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2025-02-05 15:37:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6425233644859814) internal successors, (703), 446 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 916 transitions. [2025-02-05 15:37:43,184 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 916 transitions. Word has length 69 [2025-02-05 15:37:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:43,184 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 916 transitions. [2025-02-05 15:37:43,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 916 transitions. [2025-02-05 15:37:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 15:37:43,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:43,185 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:43,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:37:43,186 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:43,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -269763253, now seen corresponding path program 1 times [2025-02-05 15:37:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105655691] [2025-02-05 15:37:43,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:43,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-05 15:37:43,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 15:37:43,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:43,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:43,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105655691] [2025-02-05 15:37:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105655691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:37:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151572672] [2025-02-05 15:37:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:43,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:37:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:43,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:37:43,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:37:43,359 INFO L87 Difference]: Start difference. First operand 562 states and 916 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:43,445 INFO L93 Difference]: Finished difference Result 1117 states and 1831 transitions. [2025-02-05 15:37:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:37:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-02-05 15:37:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:43,449 INFO L225 Difference]: With dead ends: 1117 [2025-02-05 15:37:43,449 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:43,451 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 [2025-02-05 15:37:43,451 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 49 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5396 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 [2025-02-05 15:37:43,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5396 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6350710900473933) internal successors, (690), 440 states have internal predecessors, (690), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 903 transitions. [2025-02-05 15:37:43,467 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 903 transitions. Word has length 70 [2025-02-05 15:37:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:43,467 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 903 transitions. [2025-02-05 15:37:43,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 903 transitions. [2025-02-05 15:37:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 15:37:43,468 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:43,468 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:43,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:37:43,468 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:43,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1292556925, now seen corresponding path program 1 times [2025-02-05 15:37:43,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:43,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636584724] [2025-02-05 15:37:43,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:43,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:43,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-05 15:37:43,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 15:37:43,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:43,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:43,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636584724] [2025-02-05 15:37:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636584724] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:43,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:43,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:37:43,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940369243] [2025-02-05 15:37:43,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:43,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:37:43,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:43,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:37:43,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:37:43,620 INFO L87 Difference]: Start difference. First operand 556 states and 903 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:43,691 INFO L93 Difference]: Finished difference Result 1105 states and 1805 transitions. [2025-02-05 15:37:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:37:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-02-05 15:37:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:43,696 INFO L225 Difference]: With dead ends: 1105 [2025-02-05 15:37:43,697 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:43,698 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 [2025-02-05 15:37:43,699 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 24 mSDsluCounter, 4453 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5348 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 [2025-02-05 15:37:43,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5348 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.632701421800948) internal successors, (689), 440 states have internal predecessors, (689), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 902 transitions. [2025-02-05 15:37:43,741 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 902 transitions. Word has length 70 [2025-02-05 15:37:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:43,742 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 902 transitions. [2025-02-05 15:37:43,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 902 transitions. [2025-02-05 15:37:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-05 15:37:43,744 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:43,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:43,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:37:43,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:43,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1717364556, now seen corresponding path program 1 times [2025-02-05 15:37:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737378284] [2025-02-05 15:37:43,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:43,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-05 15:37:43,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 15:37:43,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:43,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:43,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737378284] [2025-02-05 15:37:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737378284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:43,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:43,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:43,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089813898] [2025-02-05 15:37:43,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:43,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:43,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:43,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:43,832 INFO L87 Difference]: Start difference. First operand 556 states and 902 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:43,870 INFO L93 Difference]: Finished difference Result 1096 states and 1790 transitions. [2025-02-05 15:37:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:37:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2025-02-05 15:37:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:43,875 INFO L225 Difference]: With dead ends: 1096 [2025-02-05 15:37:43,875 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:43,877 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 [2025-02-05 15:37:43,878 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 15 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2646 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 [2025-02-05 15:37:43,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2646 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 440 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 901 transitions. [2025-02-05 15:37:43,899 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 901 transitions. Word has length 71 [2025-02-05 15:37:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:43,899 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 901 transitions. [2025-02-05 15:37:43,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 901 transitions. [2025-02-05 15:37:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 15:37:43,900 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:43,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:43,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:37:43,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:43,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1366466829, now seen corresponding path program 1 times [2025-02-05 15:37:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597867347] [2025-02-05 15:37:43,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:43,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 15:37:43,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 15:37:43,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:43,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597867347] [2025-02-05 15:37:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597867347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:43,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835123378] [2025-02-05 15:37:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:43,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:43,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:43,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:43,994 INFO L87 Difference]: Start difference. First operand 556 states and 901 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:44,036 INFO L93 Difference]: Finished difference Result 1096 states and 1788 transitions. [2025-02-05 15:37:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:37:44,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2025-02-05 15:37:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:44,041 INFO L225 Difference]: With dead ends: 1096 [2025-02-05 15:37:44,041 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:44,043 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 [2025-02-05 15:37:44,044 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 14 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2648 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 [2025-02-05 15:37:44,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2648 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.627962085308057) internal successors, (687), 440 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 900 transitions. [2025-02-05 15:37:44,063 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 900 transitions. Word has length 72 [2025-02-05 15:37:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:44,063 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 900 transitions. [2025-02-05 15:37:44,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 900 transitions. [2025-02-05 15:37:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-05 15:37:44,064 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:44,064 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:37:44,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:44,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2026835537, now seen corresponding path program 1 times [2025-02-05 15:37:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571944407] [2025-02-05 15:37:44,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:44,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 15:37:44,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 15:37:44,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:44,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:44,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571944407] [2025-02-05 15:37:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571944407] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:44,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397016631] [2025-02-05 15:37:44,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:44,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:44,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:44,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:44,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:44,158 INFO L87 Difference]: Start difference. First operand 556 states and 900 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:44,202 INFO L93 Difference]: Finished difference Result 1096 states and 1786 transitions. [2025-02-05 15:37:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:37:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2025-02-05 15:37:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:44,207 INFO L225 Difference]: With dead ends: 1096 [2025-02-05 15:37:44,207 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:44,209 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 [2025-02-05 15:37:44,212 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 13 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2650 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 [2025-02-05 15:37:44,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2650 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6255924170616114) internal successors, (686), 440 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 899 transitions. [2025-02-05 15:37:44,231 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 899 transitions. Word has length 73 [2025-02-05 15:37:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:44,231 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 899 transitions. [2025-02-05 15:37:44,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 899 transitions. [2025-02-05 15:37:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 15:37:44,235 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:44,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:44,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:37:44,235 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:44,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash -574305290, now seen corresponding path program 1 times [2025-02-05 15:37:44,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770545528] [2025-02-05 15:37:44,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:44,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 15:37:44,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 15:37:44,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:44,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:44,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:44,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770545528] [2025-02-05 15:37:44,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770545528] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:44,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:44,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830928752] [2025-02-05 15:37:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:44,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:44,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:44,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:44,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:44,328 INFO L87 Difference]: Start difference. First operand 556 states and 899 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:44,361 INFO L93 Difference]: Finished difference Result 1096 states and 1784 transitions. [2025-02-05 15:37:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:37:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2025-02-05 15:37:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:44,366 INFO L225 Difference]: With dead ends: 1096 [2025-02-05 15:37:44,366 INFO L226 Difference]: Without dead ends: 556 [2025-02-05 15:37:44,368 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 [2025-02-05 15:37:44,368 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 12 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2652 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 [2025-02-05 15:37:44,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2652 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2025-02-05 15:37:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2025-02-05 15:37:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6232227488151658) internal successors, (685), 440 states have internal predecessors, (685), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-02-05 15:37:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 898 transitions. [2025-02-05 15:37:44,383 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 898 transitions. Word has length 74 [2025-02-05 15:37:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:44,383 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 898 transitions. [2025-02-05 15:37:44,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 15:37:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 898 transitions. [2025-02-05 15:37:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 15:37:44,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:44,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:44,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 15:37:44,385 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:44,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1953583122, now seen corresponding path program 1 times [2025-02-05 15:37:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:44,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573952272] [2025-02-05 15:37:44,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:44,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:44,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 15:37:44,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 15:37:44,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:44,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:37:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573952272] [2025-02-05 15:37:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573952272] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:37:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770767790] [2025-02-05 15:37:44,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:44,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:37:44,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:37:44,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 15:37:44,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 15:37:44,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:44,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:44,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:37:44,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:37:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:37:44,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:37:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770767790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:37:44,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:37:44,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494073055] [2025-02-05 15:37:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:44,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:37:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:44,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:37:44,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:37:44,834 INFO L87 Difference]: Start difference. First operand 556 states and 898 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:44,878 INFO L93 Difference]: Finished difference Result 1579 states and 2582 transitions. [2025-02-05 15:37:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:37:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-02-05 15:37:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:44,884 INFO L225 Difference]: With dead ends: 1579 [2025-02-05 15:37:44,884 INFO L226 Difference]: Without dead ends: 1041 [2025-02-05 15:37:44,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:37:44,887 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 859 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1701 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 [2025-02-05 15:37:44,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1701 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2025-02-05 15:37:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1026. [2025-02-05 15:37:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 786 states have (on average 1.6361323155216285) internal successors, (1286), 821 states have internal predecessors, (1286), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 183 states have call predecessors, (193), 188 states have call successors, (193) [2025-02-05 15:37:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1670 transitions. [2025-02-05 15:37:44,915 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1670 transitions. Word has length 75 [2025-02-05 15:37:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:44,916 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1670 transitions. [2025-02-05 15:37:44,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1670 transitions. [2025-02-05 15:37:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 15:37:44,917 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:44,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:44,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:37:45,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-05 15:37:45,118 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:45,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2023712023, now seen corresponding path program 1 times [2025-02-05 15:37:45,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591705040] [2025-02-05 15:37:45,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:45,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 15:37:45,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 15:37:45,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:45,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:37:45,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591705040] [2025-02-05 15:37:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591705040] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:37:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149933234] [2025-02-05 15:37:45,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:45,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:45,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:45,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:37:45,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:37:45,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 15:37:45,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 15:37:45,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:45,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:45,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:37:45,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:37:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:37:45,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:37:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149933234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:37:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:37:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155411809] [2025-02-05 15:37:45,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:45,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:37:45,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:45,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:37:45,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:37:45,604 INFO L87 Difference]: Start difference. First operand 1026 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:45,667 INFO L93 Difference]: Finished difference Result 2519 states and 4128 transitions. [2025-02-05 15:37:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:37:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2025-02-05 15:37:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:45,677 INFO L225 Difference]: With dead ends: 2519 [2025-02-05 15:37:45,677 INFO L226 Difference]: Without dead ends: 1511 [2025-02-05 15:37:45,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:37:45,682 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 860 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1754 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 [2025-02-05 15:37:45,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1754 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2025-02-05 15:37:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1463. [2025-02-05 15:37:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1123 states have (on average 1.6482635796972396) internal successors, (1851), 1175 states have internal predecessors, (1851), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 261 states have call predecessors, (278), 268 states have call successors, (278) [2025-02-05 15:37:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2400 transitions. [2025-02-05 15:37:45,735 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2400 transitions. Word has length 76 [2025-02-05 15:37:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:45,735 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 2400 transitions. [2025-02-05 15:37:45,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:37:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2400 transitions. [2025-02-05 15:37:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 15:37:45,737 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:45,737 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:45,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:37:45,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:45,938 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:45,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash 39369632, now seen corresponding path program 1 times [2025-02-05 15:37:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145889409] [2025-02-05 15:37:45,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:45,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:45,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 15:37:45,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 15:37:45,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:45,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145889409] [2025-02-05 15:37:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145889409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:46,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:46,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:37:46,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004561202] [2025-02-05 15:37:46,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:46,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:37:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:46,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:37:46,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:37:46,087 INFO L87 Difference]: Start difference. First operand 1463 states and 2400 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:37:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:46,582 INFO L93 Difference]: Finished difference Result 4313 states and 7231 transitions. [2025-02-05 15:37:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:37:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2025-02-05 15:37:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:46,609 INFO L225 Difference]: With dead ends: 4313 [2025-02-05 15:37:46,609 INFO L226 Difference]: Without dead ends: 2868 [2025-02-05 15:37:46,618 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 [2025-02-05 15:37:46,618 INFO L435 NwaCegarLoop]: 1029 mSDtfsCounter, 889 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:46,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4710 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:37:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2025-02-05 15:37:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2821. [2025-02-05 15:37:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2167 states have (on average 1.6483617904937702) internal successors, (3572), 2267 states have internal predecessors, (3572), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (619), 507 states have call predecessors, (619), 517 states have call successors, (619) [2025-02-05 15:37:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4712 transitions. [2025-02-05 15:37:46,787 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4712 transitions. Word has length 78 [2025-02-05 15:37:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:46,788 INFO L471 AbstractCegarLoop]: Abstraction has 2821 states and 4712 transitions. [2025-02-05 15:37:46,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 15:37:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4712 transitions. [2025-02-05 15:37:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 15:37:46,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:46,791 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:46,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 15:37:46,791 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:46,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1156818030, now seen corresponding path program 1 times [2025-02-05 15:37:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:46,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139587208] [2025-02-05 15:37:46,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:46,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 15:37:46,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 15:37:46,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:46,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:37:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139587208] [2025-02-05 15:37:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139587208] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:37:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152685346] [2025-02-05 15:37:46,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:46,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:46,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:37:46,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:37:47,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 15:37:47,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 15:37:47,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:47,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:47,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:37:47,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:37:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:37:47,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:37:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152685346] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:47,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:37:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-02-05 15:37:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050531859] [2025-02-05 15:37:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:47,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:37:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:47,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:37:47,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:37:47,346 INFO L87 Difference]: Start difference. First operand 2821 states and 4712 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-05 15:37:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:48,046 INFO L93 Difference]: Finished difference Result 7636 states and 13034 transitions. [2025-02-05 15:37:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:37:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2025-02-05 15:37:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:48,081 INFO L225 Difference]: With dead ends: 7636 [2025-02-05 15:37:48,081 INFO L226 Difference]: Without dead ends: 4833 [2025-02-05 15:37:48,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:37:48,101 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 760 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:48,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3928 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:37:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2025-02-05 15:37:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4790. [2025-02-05 15:37:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 3676 states have (on average 1.601741022850925) internal successors, (5888), 3842 states have internal predecessors, (5888), 874 states have call successors, (874), 232 states have call predecessors, (874), 239 states have return successors, (1177), 855 states have call predecessors, (1177), 868 states have call successors, (1177) [2025-02-05 15:37:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7939 transitions. [2025-02-05 15:37:48,280 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7939 transitions. Word has length 79 [2025-02-05 15:37:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:48,280 INFO L471 AbstractCegarLoop]: Abstraction has 4790 states and 7939 transitions. [2025-02-05 15:37:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-05 15:37:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7939 transitions. [2025-02-05 15:37:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 15:37:48,281 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:48,281 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:48,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:37:48,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:48,486 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:48,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash -38020245, now seen corresponding path program 1 times [2025-02-05 15:37:48,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:48,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244236744] [2025-02-05 15:37:48,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:48,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:48,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 15:37:48,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 15:37:48,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:48,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:37:48,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244236744] [2025-02-05 15:37:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244236744] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655112771] [2025-02-05 15:37:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:48,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:48,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:48,552 INFO L87 Difference]: Start difference. First operand 4790 states and 7939 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:37:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:48,729 INFO L93 Difference]: Finished difference Result 9586 states and 16053 transitions. [2025-02-05 15:37:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:37:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-02-05 15:37:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:48,761 INFO L225 Difference]: With dead ends: 9586 [2025-02-05 15:37:48,761 INFO L226 Difference]: Without dead ends: 4814 [2025-02-05 15:37:48,786 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 [2025-02-05 15:37:48,787 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 12 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2616 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 [2025-02-05 15:37:48,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2616 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2025-02-05 15:37:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 4798. [2025-02-05 15:37:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 3682 states have (on average 1.6002172732210755) internal successors, (5892), 3848 states have internal predecessors, (5892), 874 states have call successors, (874), 236 states have call predecessors, (874), 241 states have return successors, (1166), 853 states have call predecessors, (1166), 868 states have call successors, (1166) [2025-02-05 15:37:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 7932 transitions. [2025-02-05 15:37:49,017 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 7932 transitions. Word has length 79 [2025-02-05 15:37:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:49,017 INFO L471 AbstractCegarLoop]: Abstraction has 4798 states and 7932 transitions. [2025-02-05 15:37:49,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-05 15:37:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 7932 transitions. [2025-02-05 15:37:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-05 15:37:49,018 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:49,019 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:49,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 15:37:49,019 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:49,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1677792558, now seen corresponding path program 1 times [2025-02-05 15:37:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015523746] [2025-02-05 15:37:49,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:49,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-02-05 15:37:49,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-02-05 15:37:49,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:49,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:37:49,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015523746] [2025-02-05 15:37:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015523746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:37:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870144681] [2025-02-05 15:37:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:49,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:37:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:49,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:37:49,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:37:49,143 INFO L87 Difference]: Start difference. First operand 4798 states and 7932 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:37:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:49,833 INFO L93 Difference]: Finished difference Result 14327 states and 24677 transitions. [2025-02-05 15:37:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:37:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2025-02-05 15:37:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:49,911 INFO L225 Difference]: With dead ends: 14327 [2025-02-05 15:37:49,912 INFO L226 Difference]: Without dead ends: 9547 [2025-02-05 15:37:49,940 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 [2025-02-05 15:37:49,941 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 884 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:49,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 4596 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:37:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2025-02-05 15:37:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 9478. [2025-02-05 15:37:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9478 states, 7276 states have (on average 1.596069268829027) internal successors, (11613), 7602 states have internal predecessors, (11613), 1720 states have call successors, (1720), 466 states have call predecessors, (1720), 481 states have return successors, (2824), 1689 states have call predecessors, (2824), 1710 states have call successors, (2824) [2025-02-05 15:37:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 16157 transitions. [2025-02-05 15:37:50,366 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 16157 transitions. Word has length 87 [2025-02-05 15:37:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:50,366 INFO L471 AbstractCegarLoop]: Abstraction has 9478 states and 16157 transitions. [2025-02-05 15:37:50,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 15:37:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 16157 transitions. [2025-02-05 15:37:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-05 15:37:50,368 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:50,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:50,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 15:37:50,368 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:50,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 363666852, now seen corresponding path program 1 times [2025-02-05 15:37:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155664066] [2025-02-05 15:37:50,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:50,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-05 15:37:50,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-05 15:37:50,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:50,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:37:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155664066] [2025-02-05 15:37:50,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155664066] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:50,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:50,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839383891] [2025-02-05 15:37:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:50,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:50,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:50,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:50,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:50,429 INFO L87 Difference]: Start difference. First operand 9478 states and 16157 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:37:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:50,787 INFO L93 Difference]: Finished difference Result 19010 states and 32887 transitions. [2025-02-05 15:37:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:37:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-02-05 15:37:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:50,836 INFO L225 Difference]: With dead ends: 19010 [2025-02-05 15:37:50,837 INFO L226 Difference]: Without dead ends: 9550 [2025-02-05 15:37:50,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:37:50,869 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 12 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2607 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 [2025-02-05 15:37:50,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2607 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2025-02-05 15:37:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 9518. [2025-02-05 15:37:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9518 states, 7312 states have (on average 1.5936816192560175) internal successors, (11653), 7630 states have internal predecessors, (11653), 1720 states have call successors, (1720), 482 states have call predecessors, (1720), 485 states have return successors, (2808), 1685 states have call predecessors, (2808), 1710 states have call successors, (2808) [2025-02-05 15:37:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9518 states to 9518 states and 16181 transitions. [2025-02-05 15:37:51,214 INFO L78 Accepts]: Start accepts. Automaton has 9518 states and 16181 transitions. Word has length 88 [2025-02-05 15:37:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:51,216 INFO L471 AbstractCegarLoop]: Abstraction has 9518 states and 16181 transitions. [2025-02-05 15:37:51,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 15:37:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9518 states and 16181 transitions. [2025-02-05 15:37:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-05 15:37:51,217 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:51,218 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:51,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 15:37:51,218 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:51,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:51,218 INFO L85 PathProgramCache]: Analyzing trace with hash 86742808, now seen corresponding path program 1 times [2025-02-05 15:37:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:51,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635217500] [2025-02-05 15:37:51,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:51,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:51,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-05 15:37:51,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-05 15:37:51,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:51,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:37:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635217500] [2025-02-05 15:37:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635217500] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:37:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566723314] [2025-02-05 15:37:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:51,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:37:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:51,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:37:51,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:37:51,368 INFO L87 Difference]: Start difference. First operand 9518 states and 16181 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 15:37:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:52,355 INFO L93 Difference]: Finished difference Result 28565 states and 51525 transitions. [2025-02-05 15:37:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:37:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2025-02-05 15:37:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:52,516 INFO L225 Difference]: With dead ends: 28565 [2025-02-05 15:37:52,517 INFO L226 Difference]: Without dead ends: 19065 [2025-02-05 15:37:52,587 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 [2025-02-05 15:37:52,588 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 880 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:52,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 4626 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:37:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19065 states. [2025-02-05 15:37:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19065 to 18964. [2025-02-05 15:37:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18964 states, 14572 states have (on average 1.5901043096349163) internal successors, (23171), 15202 states have internal predecessors, (23171), 3418 states have call successors, (3418), 958 states have call predecessors, (3418), 973 states have return successors, (7187), 3363 states have call predecessors, (7187), 3400 states have call successors, (7187) [2025-02-05 15:37:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18964 states to 18964 states and 33776 transitions. [2025-02-05 15:37:53,448 INFO L78 Accepts]: Start accepts. Automaton has 18964 states and 33776 transitions. Word has length 97 [2025-02-05 15:37:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:53,449 INFO L471 AbstractCegarLoop]: Abstraction has 18964 states and 33776 transitions. [2025-02-05 15:37:53,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 15:37:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 18964 states and 33776 transitions. [2025-02-05 15:37:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-05 15:37:53,450 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:53,450 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:53,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 15:37:53,451 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:53,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -564051199, now seen corresponding path program 1 times [2025-02-05 15:37:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:53,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718949840] [2025-02-05 15:37:53,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:53,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-05 15:37:53,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-05 15:37:53,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:53,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:37:53,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:53,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718949840] [2025-02-05 15:37:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718949840] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:53,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:53,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:37:53,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21789630] [2025-02-05 15:37:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:53,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:37:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:53,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:37:53,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:37:53,515 INFO L87 Difference]: Start difference. First operand 18964 states and 33776 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 15:37:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:54,258 INFO L93 Difference]: Finished difference Result 38054 states and 69336 transitions. [2025-02-05 15:37:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:37:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-02-05 15:37:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:54,380 INFO L225 Difference]: With dead ends: 38054 [2025-02-05 15:37:54,380 INFO L226 Difference]: Without dead ends: 19108 [2025-02-05 15:37:54,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:37:54,471 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 11 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2610 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 [2025-02-05 15:37:54,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:37:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2025-02-05 15:37:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 19044. [2025-02-05 15:37:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19044 states, 14644 states have (on average 1.587749248839115) internal successors, (23251), 15274 states have internal predecessors, (23251), 3418 states have call successors, (3418), 974 states have call predecessors, (3418), 981 states have return successors, (7167), 3355 states have call predecessors, (7167), 3400 states have call successors, (7167) [2025-02-05 15:37:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19044 states to 19044 states and 33836 transitions. [2025-02-05 15:37:55,148 INFO L78 Accepts]: Start accepts. Automaton has 19044 states and 33836 transitions. Word has length 98 [2025-02-05 15:37:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:55,149 INFO L471 AbstractCegarLoop]: Abstraction has 19044 states and 33836 transitions. [2025-02-05 15:37:55,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 15:37:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19044 states and 33836 transitions. [2025-02-05 15:37:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-05 15:37:55,151 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:55,151 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:55,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 15:37:55,151 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:55,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 96858933, now seen corresponding path program 1 times [2025-02-05 15:37:55,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:55,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199025254] [2025-02-05 15:37:55,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:55,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:55,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-05 15:37:55,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-05 15:37:55,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:55,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 15:37:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:55,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199025254] [2025-02-05 15:37:55,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199025254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:55,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:37:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:37:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543617791] [2025-02-05 15:37:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:55,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:37:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:55,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:37:55,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:37:55,256 INFO L87 Difference]: Start difference. First operand 19044 states and 33836 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:37:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:37:57,037 INFO L93 Difference]: Finished difference Result 57269 states and 111155 transitions. [2025-02-05 15:37:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:37:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2025-02-05 15:37:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:37:57,339 INFO L225 Difference]: With dead ends: 57269 [2025-02-05 15:37:57,340 INFO L226 Difference]: Without dead ends: 38243 [2025-02-05 15:37:57,473 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 [2025-02-05 15:37:57,475 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 875 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:37:57,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 4647 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:37:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38243 states. [2025-02-05 15:37:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38243 to 38078. [2025-02-05 15:37:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38078 states, 29284 states have (on average 1.5852001092746892) internal successors, (46421), 30538 states have internal predecessors, (46421), 6820 states have call successors, (6820), 1942 states have call predecessors, (6820), 1973 states have return successors, (19254), 6717 states have call predecessors, (19254), 6786 states have call successors, (19254) [2025-02-05 15:37:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38078 states to 38078 states and 72495 transitions. [2025-02-05 15:37:59,274 INFO L78 Accepts]: Start accepts. Automaton has 38078 states and 72495 transitions. Word has length 108 [2025-02-05 15:37:59,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:37:59,275 INFO L471 AbstractCegarLoop]: Abstraction has 38078 states and 72495 transitions. [2025-02-05 15:37:59,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:37:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 38078 states and 72495 transitions. [2025-02-05 15:37:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-05 15:37:59,277 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:37:59,278 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:37:59,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-05 15:37:59,278 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:37:59,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:37:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1941755148, now seen corresponding path program 1 times [2025-02-05 15:37:59,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:37:59,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647841712] [2025-02-05 15:37:59,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:59,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:37:59,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 15:37:59,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 15:37:59,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:59,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:37:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:37:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647841712] [2025-02-05 15:37:59,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647841712] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:37:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252613966] [2025-02-05 15:37:59,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:37:59,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:37:59,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:37:59,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:37:59,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:37:59,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 15:37:59,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 15:37:59,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:37:59,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:37:59,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 15:37:59,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:37:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 15:37:59,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:37:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252613966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:37:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:37:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-02-05 15:37:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223974699] [2025-02-05 15:37:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:37:59,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:37:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:37:59,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:37:59,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-02-05 15:37:59,846 INFO L87 Difference]: Start difference. First operand 38078 states and 72495 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:38:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:07,354 INFO L93 Difference]: Finished difference Result 135917 states and 279784 transitions. [2025-02-05 15:38:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 15:38:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2025-02-05 15:38:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:08,261 INFO L225 Difference]: With dead ends: 135917 [2025-02-05 15:38:08,262 INFO L226 Difference]: Without dead ends: 97857 [2025-02-05 15:38:08,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:38:08,648 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 3037 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 6578 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3215 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 7253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 6578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:08,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3215 Valid, 2471 Invalid, 7253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 6578 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-02-05 15:38:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97857 states. [2025-02-05 15:38:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97857 to 96584. [2025-02-05 15:38:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96584 states, 74346 states have (on average 1.5785247356952627) internal successors, (117357), 77384 states have internal predecessors, (117357), 17064 states have call successors, (17064), 4838 states have call predecessors, (17064), 5173 states have return successors, (58071), 17097 states have call predecessors, (58071), 16998 states have call successors, (58071) [2025-02-05 15:38:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96584 states to 96584 states and 192492 transitions. [2025-02-05 15:38:14,083 INFO L78 Accepts]: Start accepts. Automaton has 96584 states and 192492 transitions. Word has length 137 [2025-02-05 15:38:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:14,083 INFO L471 AbstractCegarLoop]: Abstraction has 96584 states and 192492 transitions. [2025-02-05 15:38:14,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:38:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 96584 states and 192492 transitions. [2025-02-05 15:38:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-02-05 15:38:14,085 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:14,085 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:14,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:38:14,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-05 15:38:14,288 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:14,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 899732619, now seen corresponding path program 1 times [2025-02-05 15:38:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494264259] [2025-02-05 15:38:14,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:14,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-02-05 15:38:14,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-02-05 15:38:14,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494264259] [2025-02-05 15:38:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494264259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:14,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017467991] [2025-02-05 15:38:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:14,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:14,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:14,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:14,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:14,379 INFO L87 Difference]: Start difference. First operand 96584 states and 192492 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:38:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:20,110 INFO L93 Difference]: Finished difference Result 194046 states and 404515 transitions. [2025-02-05 15:38:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-02-05 15:38:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:20,907 INFO L225 Difference]: With dead ends: 194046 [2025-02-05 15:38:20,908 INFO L226 Difference]: Without dead ends: 97480 [2025-02-05 15:38:21,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:38:21,892 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 10 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2607 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 [2025-02-05 15:38:21,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2607 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97480 states.