./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_product31.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 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:38:08,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:38:08,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:38:08,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:38:08,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:38:08,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:38:08,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:38:08,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:38:08,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:38:08,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:38:08,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:38:08,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:38:08,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:38:08,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:38:08,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:38:08,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:38:08,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:38:08,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:38:08,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:38:08,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:38:08,755 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 -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2025-02-05 15:38:08,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:38:08,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:38:08,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:38:08,991 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:38:08,991 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:38:08,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2025-02-05 15:38:10,190 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d97fb9a5e/fb9358fc33ff404c88da82a5930ab925/FLAG8ff9c38f4 [2025-02-05 15:38:10,597 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:38:10,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2025-02-05 15:38:10,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d97fb9a5e/fb9358fc33ff404c88da82a5930ab925/FLAG8ff9c38f4 [2025-02-05 15:38:10,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d97fb9a5e/fb9358fc33ff404c88da82a5930ab925 [2025-02-05 15:38:10,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:38:10,636 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:38:10,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:38:10,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:38:10,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:38:10,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:38:10" (1/1) ... [2025-02-05 15:38:10,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf56c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:10, skipping insertion in model container [2025-02-05 15:38:10,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:38:10" (1/1) ... [2025-02-05 15:38:10,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:38:10,809 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_product31.cil.c[1545,1558] [2025-02-05 15:38:11,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:38:11,118 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:38:11,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-02-05 15:38:11,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [57] [2025-02-05 15:38:11,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [95] [2025-02-05 15:38:11,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2025-02-05 15:38:11,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [653] [2025-02-05 15:38:11,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [752] [2025-02-05 15:38:11,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [770] [2025-02-05 15:38:11,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1437] [2025-02-05 15:38:11,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1557] [2025-02-05 15:38:11,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3170] [2025-02-05 15:38:11,131 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_product31.cil.c[1545,1558] [2025-02-05 15:38:11,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:38:11,216 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:38:11,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11 WrapperNode [2025-02-05 15:38:11,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:38:11,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:38:11,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:38:11,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:38:11,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,281 INFO L138 Inliner]: procedures = 95, calls = 355, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 985 [2025-02-05 15:38:11,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:38:11,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:38:11,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:38:11,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:38:11,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,339 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 15:38:11,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,365 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:38:11,379 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:38:11,379 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:38:11,379 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:38:11,380 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (1/1) ... [2025-02-05 15:38:11,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:38:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:11,405 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 15:38:11,411 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 15:38:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:38:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:38:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-02-05 15:38:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-02-05 15:38:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-02-05 15:38:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:38:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:38:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:38:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:38:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:38:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:38:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:38:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:38:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:38:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:38:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:38:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:38:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:38:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:38:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:38:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:38:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:38:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:38:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:38:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:38:11,612 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:38:11,614 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:38:11,698 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2529: #res#1 := ~retValue_acc~24#1; [2025-02-05 15:38:11,700 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2501-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~23#1; [2025-02-05 15:38:11,704 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1857: #res := ~retValue_acc~15; [2025-02-05 15:38:11,730 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1476: #res := ~retValue_acc~8; [2025-02-05 15:38:11,759 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3158: #res := ~retValue_acc~28; [2025-02-05 15:38:11,848 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2445-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~22#1; [2025-02-05 15:38:11,848 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2382-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~20#1; [2025-02-05 15:38:11,848 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2411: #res#1 := ~retValue_acc~21#1; [2025-02-05 15:38:11,860 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2574: #res := ~retValue_acc~26; [2025-02-05 15:38:11,999 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2342: #res := ~retValue_acc~19; [2025-02-05 15:38:12,050 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1977-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~17#1; [2025-02-05 15:38:12,050 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1990-1: isIdle_#res#1 := isIdle_~retValue_acc~18#1; [2025-02-05 15:38:12,172 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2560-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-02-05 15:38:12,176 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1434: #res := ~retValue_acc~7; [2025-02-05 15:38:12,184 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1554: #res := ~retValue_acc~10; [2025-02-05 15:38:12,186 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1632: #res := ~retValue_acc~11; [2025-02-05 15:38:12,188 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1805: #res := ~retValue_acc~12; [2025-02-05 15:38:12,302 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1515: #res := ~retValue_acc~9; [2025-02-05 15:38:12,316 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1848: #res := ~retValue_acc~14; [2025-02-05 15:38:12,344 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1897-1: isEmpty_#res#1 := isEmpty_~retValue_acc~16#1; [2025-02-05 15:38:12,385 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1123: #res := ~retValue_acc~6; [2025-02-05 15:38:12,464 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3515-1: main_#res#1 := main_~retValue_acc~31#1; [2025-02-05 15:38:12,464 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-1: valid_product_#res#1 := valid_product_~retValue_acc~1#1; [2025-02-05 15:38:12,472 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: #res := ~retValue_acc~5; [2025-02-05 15:38:12,578 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2025-02-05 15:38:12,578 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:38:12,595 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:38:12,595 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:38:12,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:38:12 BoogieIcfgContainer [2025-02-05 15:38:12,596 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:38:12,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:38:12,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:38:12,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:38:12,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:38:10" (1/3) ... [2025-02-05 15:38:12,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc3eed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:38:12, skipping insertion in model container [2025-02-05 15:38:12,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:11" (2/3) ... [2025-02-05 15:38:12,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc3eed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:38:12, skipping insertion in model container [2025-02-05 15:38:12,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:38:12" (3/3) ... [2025-02-05 15:38:12,602 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2025-02-05 15:38:12,612 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:38:12,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product31.cil.c that has 29 procedures, 621 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:38:12,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:38:12,671 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;@4cc41ac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:38:12,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:38:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 496 states have internal predecessors, (793), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2025-02-05 15:38:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-02-05 15:38:12,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:12,694 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:12,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:12,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1628912410, now seen corresponding path program 1 times [2025-02-05 15:38:12,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:12,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716079004] [2025-02-05 15:38:12,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:12,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-05 15:38:12,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-05 15:38:12,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:12,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:13,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:13,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716079004] [2025-02-05 15:38:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716079004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273475228] [2025-02-05 15:38:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:13,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:13,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:13,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:13,429 INFO L87 Difference]: Start difference. First operand has 621 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 496 states have internal predecessors, (793), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:13,575 INFO L93 Difference]: Finished difference Result 1239 states and 2050 transitions. [2025-02-05 15:38:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:13,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2025-02-05 15:38:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:13,598 INFO L225 Difference]: With dead ends: 1239 [2025-02-05 15:38:13,602 INFO L226 Difference]: Without dead ends: 625 [2025-02-05 15:38:13,617 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 15:38:13,619 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 91 mSDsluCounter, 4934 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:13,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5938 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-02-05 15:38:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 623. [2025-02-05 15:38:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 480 states have (on average 1.65625) internal successors, (795), 498 states have internal predecessors, (795), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2025-02-05 15:38:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1022 transitions. [2025-02-05 15:38:13,696 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1022 transitions. Word has length 115 [2025-02-05 15:38:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:13,697 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1022 transitions. [2025-02-05 15:38:13,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1022 transitions. [2025-02-05 15:38:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 15:38:13,701 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:13,702 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:13,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:38:13,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:13,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1733296118, now seen corresponding path program 1 times [2025-02-05 15:38:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538020053] [2025-02-05 15:38:13,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:13,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:38:13,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:38:13,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:13,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538020053] [2025-02-05 15:38:13,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538020053] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:13,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:13,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:13,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98657621] [2025-02-05 15:38:13,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:13,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:13,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:13,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:13,863 INFO L87 Difference]: Start difference. First operand 623 states and 1022 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:13,929 INFO L93 Difference]: Finished difference Result 1228 states and 2025 transitions. [2025-02-05 15:38:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2025-02-05 15:38:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:13,936 INFO L225 Difference]: With dead ends: 1228 [2025-02-05 15:38:13,936 INFO L226 Difference]: Without dead ends: 599 [2025-02-05 15:38:13,940 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 15:38:13,940 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 14 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2971 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 15:38:13,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2971 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2025-02-05 15:38:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2025-02-05 15:38:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 459 states have (on average 1.6470588235294117) internal successors, (756), 475 states have internal predecessors, (756), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 979 transitions. [2025-02-05 15:38:13,981 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 979 transitions. Word has length 116 [2025-02-05 15:38:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:13,983 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 979 transitions. [2025-02-05 15:38:13,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 979 transitions. [2025-02-05 15:38:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 15:38:13,987 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:13,988 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:38:13,988 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash -690848669, now seen corresponding path program 1 times [2025-02-05 15:38:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:13,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896283435] [2025-02-05 15:38:13,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:14,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:38:14,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:38:14,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896283435] [2025-02-05 15:38:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896283435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287858816] [2025-02-05 15:38:14,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:14,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:14,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:14,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:14,258 INFO L87 Difference]: Start difference. First operand 599 states and 979 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:14,345 INFO L93 Difference]: Finished difference Result 1191 states and 1957 transitions. [2025-02-05 15:38:14,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:14,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2025-02-05 15:38:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:14,350 INFO L225 Difference]: With dead ends: 1191 [2025-02-05 15:38:14,351 INFO L226 Difference]: Without dead ends: 593 [2025-02-05 15:38:14,354 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 15:38:14,355 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 77 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5738 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 15:38:14,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5738 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-02-05 15:38:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2025-02-05 15:38:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 453 states have (on average 1.640176600441501) internal successors, (743), 469 states have internal predecessors, (743), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 966 transitions. [2025-02-05 15:38:14,383 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 966 transitions. Word has length 116 [2025-02-05 15:38:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:14,383 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 966 transitions. [2025-02-05 15:38:14,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 966 transitions. [2025-02-05 15:38:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-05 15:38:14,386 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:14,386 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:14,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:38:14,387 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:14,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2035348704, now seen corresponding path program 1 times [2025-02-05 15:38:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771316958] [2025-02-05 15:38:14,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:14,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-05 15:38:14,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 15:38:14,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771316958] [2025-02-05 15:38:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771316958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819610076] [2025-02-05 15:38:14,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:14,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:14,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:14,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:14,581 INFO L87 Difference]: Start difference. First operand 593 states and 966 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:14,657 INFO L93 Difference]: Finished difference Result 1179 states and 1931 transitions. [2025-02-05 15:38:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2025-02-05 15:38:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:14,661 INFO L225 Difference]: With dead ends: 1179 [2025-02-05 15:38:14,661 INFO L226 Difference]: Without dead ends: 587 [2025-02-05 15:38:14,664 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 15:38:14,664 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 63 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5678 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 15:38:14,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5678 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-05 15:38:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-02-05 15:38:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 447 states have (on average 1.633109619686801) internal successors, (730), 463 states have internal predecessors, (730), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 953 transitions. [2025-02-05 15:38:14,682 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 953 transitions. Word has length 117 [2025-02-05 15:38:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:14,682 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 953 transitions. [2025-02-05 15:38:14,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 953 transitions. [2025-02-05 15:38:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-05 15:38:14,685 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:14,685 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:14,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:38:14,685 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:14,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 64146525, now seen corresponding path program 1 times [2025-02-05 15:38:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10894245] [2025-02-05 15:38:14,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:14,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-05 15:38:14,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-05 15:38:14,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:14,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:14,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10894245] [2025-02-05 15:38:14,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10894245] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:14,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:14,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202275218] [2025-02-05 15:38:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:14,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:14,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:14,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:14,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:14,862 INFO L87 Difference]: Start difference. First operand 587 states and 953 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:14,924 INFO L93 Difference]: Finished difference Result 1167 states and 1905 transitions. [2025-02-05 15:38:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2025-02-05 15:38:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:14,928 INFO L225 Difference]: With dead ends: 1167 [2025-02-05 15:38:14,928 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:14,931 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 15:38:14,931 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 49 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5618 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 15:38:14,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5618 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6258503401360545) internal successors, (717), 457 states have internal predecessors, (717), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 940 transitions. [2025-02-05 15:38:14,951 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 940 transitions. Word has length 118 [2025-02-05 15:38:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:14,951 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 940 transitions. [2025-02-05 15:38:14,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 940 transitions. [2025-02-05 15:38:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-05 15:38:14,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:14,954 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:14,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:38:14,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:14,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash -41556843, now seen corresponding path program 1 times [2025-02-05 15:38:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698895325] [2025-02-05 15:38:14,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:14,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-05 15:38:14,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-05 15:38:14,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698895325] [2025-02-05 15:38:15,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698895325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:15,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:15,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413658530] [2025-02-05 15:38:15,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:15,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:15,142 INFO L87 Difference]: Start difference. First operand 581 states and 940 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:15,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:15,210 INFO L93 Difference]: Finished difference Result 1155 states and 1879 transitions. [2025-02-05 15:38:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:15,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2025-02-05 15:38:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:15,217 INFO L225 Difference]: With dead ends: 1155 [2025-02-05 15:38:15,218 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:15,221 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 15:38:15,222 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 24 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5570 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 15:38:15,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5570 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6235827664399094) internal successors, (716), 457 states have internal predecessors, (716), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 939 transitions. [2025-02-05 15:38:15,249 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 939 transitions. Word has length 118 [2025-02-05 15:38:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:15,249 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 939 transitions. [2025-02-05 15:38:15,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 939 transitions. [2025-02-05 15:38:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-05 15:38:15,254 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:15,254 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:15,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:38:15,254 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:15,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1497553702, now seen corresponding path program 1 times [2025-02-05 15:38:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191037506] [2025-02-05 15:38:15,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:15,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 15:38:15,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 15:38:15,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191037506] [2025-02-05 15:38:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191037506] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:15,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746632276] [2025-02-05 15:38:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:15,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:15,380 INFO L87 Difference]: Start difference. First operand 581 states and 939 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:15,437 INFO L93 Difference]: Finished difference Result 1146 states and 1864 transitions. [2025-02-05 15:38:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:15,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 119 [2025-02-05 15:38:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:15,442 INFO L225 Difference]: With dead ends: 1146 [2025-02-05 15:38:15,442 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:15,445 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 15:38:15,446 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 15 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2757 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 15:38:15,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2757 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6213151927437641) internal successors, (715), 457 states have internal predecessors, (715), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 938 transitions. [2025-02-05 15:38:15,472 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 938 transitions. Word has length 119 [2025-02-05 15:38:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:15,472 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 938 transitions. [2025-02-05 15:38:15,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 938 transitions. [2025-02-05 15:38:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 15:38:15,478 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:15,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:15,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:38:15,479 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:15,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash -837939835, now seen corresponding path program 1 times [2025-02-05 15:38:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512171747] [2025-02-05 15:38:15,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:15,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 15:38:15,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 15:38:15,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512171747] [2025-02-05 15:38:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512171747] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832009462] [2025-02-05 15:38:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:15,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:15,603 INFO L87 Difference]: Start difference. First operand 581 states and 938 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:15,642 INFO L93 Difference]: Finished difference Result 1146 states and 1862 transitions. [2025-02-05 15:38:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:15,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2025-02-05 15:38:15,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:15,648 INFO L225 Difference]: With dead ends: 1146 [2025-02-05 15:38:15,648 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:15,650 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 15:38:15,650 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 14 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2759 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 15:38:15,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2759 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.619047619047619) internal successors, (714), 457 states have internal predecessors, (714), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 937 transitions. [2025-02-05 15:38:15,670 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 937 transitions. Word has length 120 [2025-02-05 15:38:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:15,670 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 937 transitions. [2025-02-05 15:38:15,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 937 transitions. [2025-02-05 15:38:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:38:15,673 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:15,673 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:15,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:38:15,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:15,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 984292797, now seen corresponding path program 1 times [2025-02-05 15:38:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138182418] [2025-02-05 15:38:15,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:15,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:38:15,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:38:15,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138182418] [2025-02-05 15:38:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138182418] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:15,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:15,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903410295] [2025-02-05 15:38:15,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:15,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:15,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:15,795 INFO L87 Difference]: Start difference. First operand 581 states and 937 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:15,836 INFO L93 Difference]: Finished difference Result 1146 states and 1860 transitions. [2025-02-05 15:38:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:15,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2025-02-05 15:38:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:15,841 INFO L225 Difference]: With dead ends: 1146 [2025-02-05 15:38:15,841 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:15,843 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 15:38:15,845 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 13 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2761 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 15:38:15,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.616780045351474) internal successors, (713), 457 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 936 transitions. [2025-02-05 15:38:15,864 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 936 transitions. Word has length 121 [2025-02-05 15:38:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:15,864 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 936 transitions. [2025-02-05 15:38:15,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 936 transitions. [2025-02-05 15:38:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:38:15,867 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:15,867 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:15,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:38:15,867 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:15,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:15,867 INFO L85 PathProgramCache]: Analyzing trace with hash 193001480, now seen corresponding path program 1 times [2025-02-05 15:38:15,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:15,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049106742] [2025-02-05 15:38:15,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:15,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:38:15,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:38:15,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049106742] [2025-02-05 15:38:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049106742] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900579204] [2025-02-05 15:38:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:15,972 INFO L87 Difference]: Start difference. First operand 581 states and 936 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:16,012 INFO L93 Difference]: Finished difference Result 1146 states and 1858 transitions. [2025-02-05 15:38:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2025-02-05 15:38:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:16,018 INFO L225 Difference]: With dead ends: 1146 [2025-02-05 15:38:16,018 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:16,021 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 15:38:16,021 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 12 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2763 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 15:38:16,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2763 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6145124716553287) internal successors, (712), 457 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 935 transitions. [2025-02-05 15:38:16,041 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 935 transitions. Word has length 122 [2025-02-05 15:38:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:16,041 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 935 transitions. [2025-02-05 15:38:16,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:38:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 935 transitions. [2025-02-05 15:38:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-05 15:38:16,043 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:16,043 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:16,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 15:38:16,044 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:16,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1841191905, now seen corresponding path program 1 times [2025-02-05 15:38:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606672245] [2025-02-05 15:38:16,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:16,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:38:16,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:38:16,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:16,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606672245] [2025-02-05 15:38:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606672245] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:16,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:16,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 15:38:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69714226] [2025-02-05 15:38:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:38:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:16,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:38:16,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:38:16,229 INFO L87 Difference]: Start difference. First operand 581 states and 935 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:16,294 INFO L93 Difference]: Finished difference Result 1149 states and 1858 transitions. [2025-02-05 15:38:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:16,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2025-02-05 15:38:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:16,298 INFO L225 Difference]: With dead ends: 1149 [2025-02-05 15:38:16,298 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 15:38:16,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:38:16,301 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 12 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6429 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:16,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6429 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 15:38:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-02-05 15:38:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6122448979591837) internal successors, (711), 457 states have internal predecessors, (711), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2025-02-05 15:38:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 934 transitions. [2025-02-05 15:38:16,320 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 934 transitions. Word has length 123 [2025-02-05 15:38:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:16,320 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 934 transitions. [2025-02-05 15:38:16,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 934 transitions. [2025-02-05 15:38:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-05 15:38:16,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:16,323 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:16,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 15:38:16,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:16,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash -13153632, now seen corresponding path program 1 times [2025-02-05 15:38:16,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:16,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166365747] [2025-02-05 15:38:16,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:16,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:38:16,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:38:16,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:16,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166365747] [2025-02-05 15:38:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166365747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573618725] [2025-02-05 15:38:16,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:16,530 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 15:38:16,531 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 15:38:16,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:38:16,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:38:16,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:16,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:16,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:38:16,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:38:16,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573618725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:38:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795879013] [2025-02-05 15:38:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:16,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:16,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:16,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:16,955 INFO L87 Difference]: Start difference. First operand 581 states and 934 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:17,037 INFO L93 Difference]: Finished difference Result 1654 states and 2690 transitions. [2025-02-05 15:38:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2025-02-05 15:38:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:17,049 INFO L225 Difference]: With dead ends: 1654 [2025-02-05 15:38:17,049 INFO L226 Difference]: Without dead ends: 1091 [2025-02-05 15:38:17,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:17,061 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 857 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2436 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 15:38:17,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2436 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2025-02-05 15:38:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1076. [2025-02-05 15:38:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 824 states have (on average 1.6237864077669903) internal successors, (1338), 855 states have internal predecessors, (1338), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2025-02-05 15:38:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1742 transitions. [2025-02-05 15:38:17,098 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1742 transitions. Word has length 123 [2025-02-05 15:38:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:17,098 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1742 transitions. [2025-02-05 15:38:17,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1742 transitions. [2025-02-05 15:38:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:38:17,102 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:17,102 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:17,115 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 15:38:17,303 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,SelfDestructingSolverStorable11 [2025-02-05 15:38:17,304 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:17,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1245501200, now seen corresponding path program 1 times [2025-02-05 15:38:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804152073] [2025-02-05 15:38:17,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:17,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:38:17,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:38:17,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:17,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804152073] [2025-02-05 15:38:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804152073] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107649965] [2025-02-05 15:38:17,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:17,506 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 15:38:17,509 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 15:38:17,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:38:17,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:38:17,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:17,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:17,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:38:17,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:38:17,913 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:17,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107649965] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:17,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:17,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:38:17,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227106394] [2025-02-05 15:38:17,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:17,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:17,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:17,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:17,914 INFO L87 Difference]: Start difference. First operand 1076 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:17,997 INFO L93 Difference]: Finished difference Result 2644 states and 4308 transitions. [2025-02-05 15:38:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:17,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2025-02-05 15:38:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:18,009 INFO L225 Difference]: With dead ends: 2644 [2025-02-05 15:38:18,009 INFO L226 Difference]: Without dead ends: 1586 [2025-02-05 15:38:18,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:18,016 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 859 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2490 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 15:38:18,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2490 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2025-02-05 15:38:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1538. [2025-02-05 15:38:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1180 states have (on average 1.6355932203389831) internal successors, (1930), 1226 states have internal predecessors, (1930), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2025-02-05 15:38:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2509 transitions. [2025-02-05 15:38:18,090 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2509 transitions. Word has length 124 [2025-02-05 15:38:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:18,092 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2509 transitions. [2025-02-05 15:38:18,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-05 15:38:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2509 transitions. [2025-02-05 15:38:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-05 15:38:18,098 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:18,099 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:18,106 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 15:38:18,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:18,303 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:18,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1557394324, now seen corresponding path program 1 times [2025-02-05 15:38:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:18,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641619726] [2025-02-05 15:38:18,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:18,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:18,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:38:18,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:38:18,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:18,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641619726] [2025-02-05 15:38:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641619726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:18,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:18,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477843506] [2025-02-05 15:38:18,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:18,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:18,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:18,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:18,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:18,465 INFO L87 Difference]: Start difference. First operand 1538 states and 2509 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:38:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:18,954 INFO L93 Difference]: Finished difference Result 4538 states and 7552 transitions. [2025-02-05 15:38:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:18,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2025-02-05 15:38:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:18,973 INFO L225 Difference]: With dead ends: 4538 [2025-02-05 15:38:18,973 INFO L226 Difference]: Without dead ends: 3018 [2025-02-05 15:38:18,982 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 15:38:18,982 INFO L435 NwaCegarLoop]: 1036 mSDtfsCounter, 930 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 4765 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:18,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 4765 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2025-02-05 15:38:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2971. [2025-02-05 15:38:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2281 states have (on average 1.6356861025865848) internal successors, (3731), 2369 states have internal predecessors, (3731), 551 states have call successors, (551), 136 states have call predecessors, (551), 138 states have return successors, (655), 543 states have call predecessors, (655), 547 states have call successors, (655) [2025-02-05 15:38:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4937 transitions. [2025-02-05 15:38:19,163 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4937 transitions. Word has length 126 [2025-02-05 15:38:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:19,163 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4937 transitions. [2025-02-05 15:38:19,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:38:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4937 transitions. [2025-02-05 15:38:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:38:19,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:19,169 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:19,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 15:38:19,169 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:19,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash -69713897, now seen corresponding path program 1 times [2025-02-05 15:38:19,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:19,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587020270] [2025-02-05 15:38:19,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:19,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:19,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:19,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:19,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:19,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:19,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587020270] [2025-02-05 15:38:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587020270] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975016533] [2025-02-05 15:38:19,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:19,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:19,341 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 15:38:19,342 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 15:38:19,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:19,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:19,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:19,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:19,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:38:19,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:38:19,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975016533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:19,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:19,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-02-05 15:38:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579271469] [2025-02-05 15:38:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:19,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:19,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:19,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:38:19,749 INFO L87 Difference]: Start difference. First operand 2971 states and 4937 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 15:38:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:20,489 INFO L93 Difference]: Finished difference Result 8060 states and 13603 transitions. [2025-02-05 15:38:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2025-02-05 15:38:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:20,525 INFO L225 Difference]: With dead ends: 8060 [2025-02-05 15:38:20,525 INFO L226 Difference]: Without dead ends: 5107 [2025-02-05 15:38:20,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:38:20,552 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 793 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:20,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 4073 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:38:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2025-02-05 15:38:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5064. [2025-02-05 15:38:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 3882 states have (on average 1.589644513137558) internal successors, (6171), 4028 states have internal predecessors, (6171), 930 states have call successors, (930), 246 states have call predecessors, (930), 251 states have return successors, (1213), 919 states have call predecessors, (1213), 924 states have call successors, (1213) [2025-02-05 15:38:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 8314 transitions. [2025-02-05 15:38:20,756 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 8314 transitions. Word has length 127 [2025-02-05 15:38:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:20,758 INFO L471 AbstractCegarLoop]: Abstraction has 5064 states and 8314 transitions. [2025-02-05 15:38:20,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 15:38:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 8314 transitions. [2025-02-05 15:38:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:38:20,762 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:20,762 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:20,770 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 15:38:20,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:20,967 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:20,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -263836936, now seen corresponding path program 1 times [2025-02-05 15:38:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467180098] [2025-02-05 15:38:20,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:20,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:20,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:20,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:20,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467180098] [2025-02-05 15:38:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467180098] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:21,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:21,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735270401] [2025-02-05 15:38:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:21,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:21,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:21,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:21,098 INFO L87 Difference]: Start difference. First operand 5064 states and 8314 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:38:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:21,340 INFO L93 Difference]: Finished difference Result 10134 states and 16803 transitions. [2025-02-05 15:38:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2025-02-05 15:38:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:21,379 INFO L225 Difference]: With dead ends: 10134 [2025-02-05 15:38:21,380 INFO L226 Difference]: Without dead ends: 5088 [2025-02-05 15:38:21,404 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 15:38:21,405 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 12 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:21,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2724 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2025-02-05 15:38:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 5072. [2025-02-05 15:38:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 3888 states have (on average 1.5882201646090535) internal successors, (6175), 4034 states have internal predecessors, (6175), 930 states have call successors, (930), 250 states have call predecessors, (930), 253 states have return successors, (1202), 917 states have call predecessors, (1202), 924 states have call successors, (1202) [2025-02-05 15:38:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 8307 transitions. [2025-02-05 15:38:21,612 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 8307 transitions. Word has length 127 [2025-02-05 15:38:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:21,613 INFO L471 AbstractCegarLoop]: Abstraction has 5072 states and 8307 transitions. [2025-02-05 15:38:21,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:38:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 8307 transitions. [2025-02-05 15:38:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 15:38:21,617 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:21,618 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:21,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 15:38:21,618 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:21,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1503761757, now seen corresponding path program 1 times [2025-02-05 15:38:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879233455] [2025-02-05 15:38:21,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:21,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 15:38:21,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 15:38:21,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:21,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:38:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879233455] [2025-02-05 15:38:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879233455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:21,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:21,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674101251] [2025-02-05 15:38:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:21,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:21,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:21,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:21,856 INFO L87 Difference]: Start difference. First operand 5072 states and 8307 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:38:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:22,576 INFO L93 Difference]: Finished difference Result 15149 states and 25602 transitions. [2025-02-05 15:38:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2025-02-05 15:38:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:22,660 INFO L225 Difference]: With dead ends: 15149 [2025-02-05 15:38:22,660 INFO L226 Difference]: Without dead ends: 10095 [2025-02-05 15:38:22,690 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 15:38:22,691 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 925 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:22,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4639 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10095 states. [2025-02-05 15:38:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 10026. [2025-02-05 15:38:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7688 states have (on average 1.5842872008324662) internal successors, (12180), 7974 states have internal predecessors, (12180), 1832 states have call successors, (1832), 494 states have call predecessors, (1832), 505 states have return successors, (2816), 1817 states have call predecessors, (2816), 1822 states have call successors, (2816) [2025-02-05 15:38:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16828 transitions. [2025-02-05 15:38:23,144 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16828 transitions. Word has length 135 [2025-02-05 15:38:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:23,145 INFO L471 AbstractCegarLoop]: Abstraction has 10026 states and 16828 transitions. [2025-02-05 15:38:23,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-05 15:38:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16828 transitions. [2025-02-05 15:38:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:38:23,151 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:23,151 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:23,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 15:38:23,151 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:23,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1438381549, now seen corresponding path program 1 times [2025-02-05 15:38:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845689237] [2025-02-05 15:38:23,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:23,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:38:23,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:38:23,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:23,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 15:38:23,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845689237] [2025-02-05 15:38:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845689237] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310167992] [2025-02-05 15:38:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:23,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:23,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:23,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:23,229 INFO L87 Difference]: Start difference. First operand 10026 states and 16828 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:38:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:23,693 INFO L93 Difference]: Finished difference Result 20106 states and 34229 transitions. [2025-02-05 15:38:23,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:23,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2025-02-05 15:38:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:23,759 INFO L225 Difference]: With dead ends: 20106 [2025-02-05 15:38:23,759 INFO L226 Difference]: Without dead ends: 10098 [2025-02-05 15:38:23,822 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 15:38:23,823 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 12 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:23,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2715 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10098 states. [2025-02-05 15:38:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10098 to 10066. [2025-02-05 15:38:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7724 states have (on average 1.5820818228896945) internal successors, (12220), 8002 states have internal predecessors, (12220), 1832 states have call successors, (1832), 510 states have call predecessors, (1832), 509 states have return successors, (2800), 1813 states have call predecessors, (2800), 1822 states have call successors, (2800) [2025-02-05 15:38:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 16852 transitions. [2025-02-05 15:38:24,231 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 16852 transitions. Word has length 136 [2025-02-05 15:38:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:24,231 INFO L471 AbstractCegarLoop]: Abstraction has 10066 states and 16852 transitions. [2025-02-05 15:38:24,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:38:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 16852 transitions. [2025-02-05 15:38:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 15:38:24,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:24,237 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:24,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 15:38:24,238 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:24,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2094674907, now seen corresponding path program 1 times [2025-02-05 15:38:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417558700] [2025-02-05 15:38:24,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:24,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 15:38:24,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 15:38:24,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:24,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:38:24,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:24,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417558700] [2025-02-05 15:38:24,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417558700] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:24,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:24,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:24,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226631493] [2025-02-05 15:38:24,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:24,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:24,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:24,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:24,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:24,357 INFO L87 Difference]: Start difference. First operand 10066 states and 16852 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:38:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:25,570 INFO L93 Difference]: Finished difference Result 30209 states and 52879 transitions. [2025-02-05 15:38:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2025-02-05 15:38:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:25,761 INFO L225 Difference]: With dead ends: 30209 [2025-02-05 15:38:25,762 INFO L226 Difference]: Without dead ends: 20161 [2025-02-05 15:38:25,862 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 15:38:25,862 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 918 mSDsluCounter, 3661 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:25,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 4668 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20161 states. [2025-02-05 15:38:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20161 to 20060. [2025-02-05 15:38:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20060 states, 15396 states have (on average 1.578721745908028) internal successors, (24306), 15946 states have internal predecessors, (24306), 3642 states have call successors, (3642), 1014 states have call predecessors, (3642), 1021 states have return successors, (6872), 3619 states have call predecessors, (6872), 3624 states have call successors, (6872) [2025-02-05 15:38:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20060 states to 20060 states and 34820 transitions. [2025-02-05 15:38:26,839 INFO L78 Accepts]: Start accepts. Automaton has 20060 states and 34820 transitions. Word has length 145 [2025-02-05 15:38:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:26,840 INFO L471 AbstractCegarLoop]: Abstraction has 20060 states and 34820 transitions. [2025-02-05 15:38:26,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:38:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20060 states and 34820 transitions. [2025-02-05 15:38:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-05 15:38:26,844 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:26,844 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:26,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 15:38:26,845 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 64239660, now seen corresponding path program 1 times [2025-02-05 15:38:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103693772] [2025-02-05 15:38:26,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:26,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-05 15:38:26,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-05 15:38:26,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:26,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-05 15:38:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103693772] [2025-02-05 15:38:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103693772] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:26,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663356987] [2025-02-05 15:38:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:26,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:26,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:26,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:26,925 INFO L87 Difference]: Start difference. First operand 20060 states and 34820 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:38:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:27,910 INFO L93 Difference]: Finished difference Result 40246 states and 71475 transitions. [2025-02-05 15:38:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2025-02-05 15:38:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:28,057 INFO L225 Difference]: With dead ends: 40246 [2025-02-05 15:38:28,058 INFO L226 Difference]: Without dead ends: 20204 [2025-02-05 15:38:28,246 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 15:38:28,247 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 11 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:28,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2715 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20204 states. [2025-02-05 15:38:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20204 to 20140. [2025-02-05 15:38:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 15468 states have (on average 1.5765451254202223) internal successors, (24386), 16018 states have internal predecessors, (24386), 3642 states have call successors, (3642), 1030 states have call predecessors, (3642), 1029 states have return successors, (6852), 3611 states have call predecessors, (6852), 3624 states have call successors, (6852) [2025-02-05 15:38:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 34880 transitions. [2025-02-05 15:38:29,261 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 34880 transitions. Word has length 146 [2025-02-05 15:38:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:29,261 INFO L471 AbstractCegarLoop]: Abstraction has 20140 states and 34880 transitions. [2025-02-05 15:38:29,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:38:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 34880 transitions. [2025-02-05 15:38:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-05 15:38:29,268 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:29,268 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:29,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-05 15:38:29,268 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:29,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1193978050, now seen corresponding path program 1 times [2025-02-05 15:38:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461663874] [2025-02-05 15:38:29,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:29,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:29,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:38:29,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:38:29,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:29,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-02-05 15:38:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461663874] [2025-02-05 15:38:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461663874] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:29,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858466619] [2025-02-05 15:38:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:29,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:29,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:29,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:29,439 INFO L87 Difference]: Start difference. First operand 20140 states and 34880 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:38:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:31,629 INFO L93 Difference]: Finished difference Result 60557 states and 112464 transitions. [2025-02-05 15:38:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2025-02-05 15:38:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:32,025 INFO L225 Difference]: With dead ends: 60557 [2025-02-05 15:38:32,025 INFO L226 Difference]: Without dead ends: 40435 [2025-02-05 15:38:32,431 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 15:38:32,432 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 916 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:32,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4633 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40435 states. [2025-02-05 15:38:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40435 to 40270. [2025-02-05 15:38:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40270 states, 30932 states have (on average 1.5741626794258374) internal successors, (48692), 32026 states have internal predecessors, (48692), 7268 states have call successors, (7268), 2054 states have call predecessors, (7268), 2069 states have return successors, (17860), 7229 states have call predecessors, (17860), 7234 states have call successors, (17860) [2025-02-05 15:38:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40270 states to 40270 states and 73820 transitions. [2025-02-05 15:38:34,135 INFO L78 Accepts]: Start accepts. Automaton has 40270 states and 73820 transitions. Word has length 156 [2025-02-05 15:38:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:34,136 INFO L471 AbstractCegarLoop]: Abstraction has 40270 states and 73820 transitions. [2025-02-05 15:38:34,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 15:38:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 40270 states and 73820 transitions. [2025-02-05 15:38:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-05 15:38:34,143 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:34,143 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:34,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-05 15:38:34,143 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:34,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1736478518, now seen corresponding path program 1 times [2025-02-05 15:38:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230725932] [2025-02-05 15:38:34,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:34,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:38:34,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:38:34,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:34,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:38:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230725932] [2025-02-05 15:38:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230725932] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163513303] [2025-02-05 15:38:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:34,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:34,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:34,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:34,238 INFO L87 Difference]: Start difference. First operand 40270 states and 73820 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-02-05 15:38:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:37,246 INFO L93 Difference]: Finished difference Result 80842 states and 153945 transitions. [2025-02-05 15:38:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:37,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2025-02-05 15:38:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:37,657 INFO L225 Difference]: With dead ends: 80842 [2025-02-05 15:38:37,658 INFO L226 Difference]: Without dead ends: 40590 [2025-02-05 15:38:38,396 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 15:38:38,397 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 10 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:38,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2715 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:38,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40590 states. [2025-02-05 15:38:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40590 to 40462. [2025-02-05 15:38:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40462 states, 31108 states have (on average 1.5714285714285714) internal successors, (48884), 32202 states have internal predecessors, (48884), 7268 states have call successors, (7268), 2086 states have call predecessors, (7268), 2085 states have return successors, (17844), 7213 states have call predecessors, (17844), 7234 states have call successors, (17844) [2025-02-05 15:38:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40462 states to 40462 states and 73996 transitions. [2025-02-05 15:38:40,533 INFO L78 Accepts]: Start accepts. Automaton has 40462 states and 73996 transitions. Word has length 157 [2025-02-05 15:38:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:40,533 INFO L471 AbstractCegarLoop]: Abstraction has 40462 states and 73996 transitions. [2025-02-05 15:38:40,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-02-05 15:38:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 40462 states and 73996 transitions. [2025-02-05 15:38:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 15:38:40,542 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:40,543 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:40,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-05 15:38:40,543 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:40,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash -713238310, now seen corresponding path program 1 times [2025-02-05 15:38:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727625106] [2025-02-05 15:38:40,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:40,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:38:40,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:38:40,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:40,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 15:38:40,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:40,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727625106] [2025-02-05 15:38:40,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727625106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:40,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265535304] [2025-02-05 15:38:40,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:40,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:40,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:40,926 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 15:38:40,927 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 15:38:41,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:38:41,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:38:41,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:41,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:41,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:38:41,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-02-05 15:38:41,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265535304] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 15:38:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881708300] [2025-02-05 15:38:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:41,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:41,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:41,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:41,225 INFO L87 Difference]: Start difference. First operand 40462 states and 73996 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-02-05 15:38:45,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:45,094 INFO L93 Difference]: Finished difference Result 120223 states and 223388 transitions. [2025-02-05 15:38:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2025-02-05 15:38:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:45,711 INFO L225 Difference]: With dead ends: 120223 [2025-02-05 15:38:45,711 INFO L226 Difference]: Without dead ends: 79810 [2025-02-05 15:38:46,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:46,139 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 920 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:46,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1906 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79810 states. [2025-02-05 15:38:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79810 to 79245. [2025-02-05 15:38:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79245 states, 61126 states have (on average 1.574763603049439) internal successors, (96259), 63199 states have internal predecessors, (96259), 14049 states have call successors, (14049), 4038 states have call predecessors, (14049), 4069 states have return successors, (35421), 14055 states have call predecessors, (35421), 13983 states have call successors, (35421) [2025-02-05 15:38:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79245 states to 79245 states and 145729 transitions. [2025-02-05 15:38:50,426 INFO L78 Accepts]: Start accepts. Automaton has 79245 states and 145729 transitions. Word has length 168 [2025-02-05 15:38:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:50,427 INFO L471 AbstractCegarLoop]: Abstraction has 79245 states and 145729 transitions. [2025-02-05 15:38:50,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-02-05 15:38:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 79245 states and 145729 transitions. [2025-02-05 15:38:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 15:38:50,433 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:50,433 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:38:50,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:38:50,634 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,SelfDestructingSolverStorable22 [2025-02-05 15:38:50,634 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:50,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1006641317, now seen corresponding path program 1 times [2025-02-05 15:38:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863440011] [2025-02-05 15:38:50,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:50,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:38:50,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:38:50,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:50,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 15:38:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863440011] [2025-02-05 15:38:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863440011] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484386275] [2025-02-05 15:38:50,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:50,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:50,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:50,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:50,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:38:51,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:38:51,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:38:51,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:51,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:51,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:38:51,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-05 15:38:51,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484386275] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-05 15:38:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337540332] [2025-02-05 15:38:51,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:51,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:51,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:51,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:51,253 INFO L87 Difference]: Start difference. First operand 79245 states and 145729 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)