./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product03.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_spec2_product03.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:35:04,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:35:04,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:35:04,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:35:04,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:35:04,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:35:04,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:35:04,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:35:04,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:35:04,236 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:35:04,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:35:04,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:35:04,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:35:04,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:35:04,236 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:35:04,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:35:04,237 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:35:04,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:35:04,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:35:04,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:35:04,238 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 -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2025-02-05 15:35:04,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:35:04,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:35:04,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:35:04,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:35:04,445 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:35:04,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2025-02-05 15:35:05,592 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d026d1276/0c883c875a8a4dfe98c6fe4702ef7df6/FLAG155bbd318 [2025-02-05 15:35:05,946 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:35:05,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2025-02-05 15:35:05,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d026d1276/0c883c875a8a4dfe98c6fe4702ef7df6/FLAG155bbd318 [2025-02-05 15:35:06,158 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d026d1276/0c883c875a8a4dfe98c6fe4702ef7df6 [2025-02-05 15:35:06,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:35:06,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:35:06,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:35:06,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:35:06,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:35:06,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd3841b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06, skipping insertion in model container [2025-02-05 15:35:06,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,202 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:35:06,429 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2025-02-05 15:35:06,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:35:06,548 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:35:06,554 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2025-02-05 15:35:06,555 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2025-02-05 15:35:06,555 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [837] [2025-02-05 15:35:06,555 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [851] [2025-02-05 15:35:06,556 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1217] [2025-02-05 15:35:06,556 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1226] [2025-02-05 15:35:06,556 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1264] [2025-02-05 15:35:06,557 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1622] [2025-02-05 15:35:06,557 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3131] [2025-02-05 15:35:06,557 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3312] [2025-02-05 15:35:06,589 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_spec2_product03.cil.c[29828,29841] [2025-02-05 15:35:06,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:35:06,645 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:35:06,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06 WrapperNode [2025-02-05 15:35:06,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:35:06,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:35:06,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:35:06,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:35:06,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,694 INFO L138 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1067 [2025-02-05 15:35:06,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:35:06,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:35:06,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:35:06,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:35:06,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,729 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 15:35:06,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:35:06,756 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:35:06,757 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:35:06,757 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:35:06,757 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (1/1) ... [2025-02-05 15:35:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:35:06,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:06,779 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 15:35:06,782 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 15:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-02-05 15:35:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-02-05 15:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:35:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:35:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:35:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:35:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:35:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:35:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:35:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:35:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:35:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:35:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:35:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-02-05 15:35:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-02-05 15:35:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-02-05 15:35:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:35:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:35:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:35:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:35:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:35:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:35:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:35:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:35:06,949 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:35:06,953 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:35:07,001 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L834: #res := ~retValue_acc~5; [2025-02-05 15:35:07,005 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1700: #res := ~retValue_acc~13; [2025-02-05 15:35:07,014 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1834: #res := ~retValue_acc~14; [2025-02-05 15:35:07,046 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3119: #res := ~retValue_acc~28; [2025-02-05 15:35:07,433 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2400: #res#1 := ~retValue_acc~22#1; [2025-02-05 15:35:07,433 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2371-1: stopRequestedInDirection__wrappee__base_#res#1 := stopRequestedInDirection__wrappee__base_~retValue_acc~21#1; [2025-02-05 15:35:07,483 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2535: #res := ~retValue_acc~26; [2025-02-05 15:35:07,493 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L795: #res := ~retValue_acc~4; [2025-02-05 15:35:07,554 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2490: #res#1 := ~retValue_acc~24#1; [2025-02-05 15:35:07,554 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1877-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~16#1; [2025-02-05 15:35:07,777 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2521-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-02-05 15:35:07,868 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2006-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-02-05 15:35:07,869 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2019-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-02-05 15:35:08,002 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: #res := ~retValue_acc~1; [2025-02-05 15:35:08,094 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1619-1: main_#res#1 := main_~retValue_acc~12#1; [2025-02-05 15:35:08,095 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261-1: valid_product_#res#1 := valid_product_~retValue_acc~10#1; [2025-02-05 15:35:08,104 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~0; [2025-02-05 15:35:08,105 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1843: #res := ~retValue_acc~15; [2025-02-05 15:35:08,109 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: #res := ~retValue_acc~2; [2025-02-05 15:35:08,204 INFO L? ?]: Removed 431 outVars from TransFormulas that were not future-live. [2025-02-05 15:35:08,204 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:35:08,218 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:35:08,218 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:35:08,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:35:08 BoogieIcfgContainer [2025-02-05 15:35:08,219 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:35:08,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:35:08,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:35:08,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:35:08,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:35:06" (1/3) ... [2025-02-05 15:35:08,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b870d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:35:08, skipping insertion in model container [2025-02-05 15:35:08,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:35:06" (2/3) ... [2025-02-05 15:35:08,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b870d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:35:08, skipping insertion in model container [2025-02-05 15:35:08,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:35:08" (3/3) ... [2025-02-05 15:35:08,225 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2025-02-05 15:35:08,234 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:35:08,237 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product03.cil.c that has 24 procedures, 545 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:35:08,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:35:08,298 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;@53e848e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:35:08,298 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:35:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 447 states have internal predecessors, (720), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2025-02-05 15:35:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 15:35:08,348 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:08,349 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:08,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:08,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash 363042690, now seen corresponding path program 1 times [2025-02-05 15:35:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038506938] [2025-02-05 15:35:08,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:08,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:08,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 15:35:08,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 15:35:08,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:08,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:09,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038506938] [2025-02-05 15:35:09,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038506938] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:09,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:09,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730252375] [2025-02-05 15:35:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:09,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:09,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:09,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:09,204 INFO L87 Difference]: Start difference. First operand has 545 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 447 states have internal predecessors, (720), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:09,375 INFO L93 Difference]: Finished difference Result 1070 states and 1790 transitions. [2025-02-05 15:35:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2025-02-05 15:35:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:09,396 INFO L225 Difference]: With dead ends: 1070 [2025-02-05 15:35:09,397 INFO L226 Difference]: Without dead ends: 536 [2025-02-05 15:35:09,406 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 15:35:09,409 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 5 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:09,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2660 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-02-05 15:35:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2025-02-05 15:35:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6873508353221958) internal successors, (707), 438 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 890 transitions. [2025-02-05 15:35:09,505 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 890 transitions. Word has length 120 [2025-02-05 15:35:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:09,505 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 890 transitions. [2025-02-05 15:35:09,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 890 transitions. [2025-02-05 15:35:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:35:09,525 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:09,525 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:09,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:35:09,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:09,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2053650851, now seen corresponding path program 1 times [2025-02-05 15:35:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916944658] [2025-02-05 15:35:09,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:09,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:09,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:35:09,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:35:09,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:09,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916944658] [2025-02-05 15:35:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916944658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:09,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:09,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:09,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921993256] [2025-02-05 15:35:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:09,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:09,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:09,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:09,789 INFO L87 Difference]: Start difference. First operand 536 states and 890 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:09,861 INFO L93 Difference]: Finished difference Result 1054 states and 1757 transitions. [2025-02-05 15:35:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:09,861 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2025-02-05 15:35:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:09,865 INFO L225 Difference]: With dead ends: 1054 [2025-02-05 15:35:09,868 INFO L226 Difference]: Without dead ends: 536 [2025-02-05 15:35:09,870 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 15:35:09,871 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 4 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:09,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2633 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-02-05 15:35:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2025-02-05 15:35:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6849642004773269) internal successors, (706), 438 states have internal predecessors, (706), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 889 transitions. [2025-02-05 15:35:09,912 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 889 transitions. Word has length 121 [2025-02-05 15:35:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:09,913 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 889 transitions. [2025-02-05 15:35:09,913 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 889 transitions. [2025-02-05 15:35:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:35:09,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:09,919 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:09,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:35:09,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:09,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 390262591, now seen corresponding path program 1 times [2025-02-05 15:35:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757262909] [2025-02-05 15:35:09,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:09,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:35:09,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:35:09,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:09,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757262909] [2025-02-05 15:35:10,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757262909] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:10,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:10,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878621136] [2025-02-05 15:35:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:10,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:10,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:10,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:10,107 INFO L87 Difference]: Start difference. First operand 536 states and 889 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:10,177 INFO L93 Difference]: Finished difference Result 1054 states and 1756 transitions. [2025-02-05 15:35:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2025-02-05 15:35:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,182 INFO L225 Difference]: With dead ends: 1054 [2025-02-05 15:35:10,184 INFO L226 Difference]: Without dead ends: 536 [2025-02-05 15:35:10,186 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 15:35:10,187 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 3 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2633 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 15:35:10,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2633 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-02-05 15:35:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2025-02-05 15:35:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6825775656324582) internal successors, (705), 438 states have internal predecessors, (705), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 888 transitions. [2025-02-05 15:35:10,216 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 888 transitions. Word has length 122 [2025-02-05 15:35:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:10,216 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 888 transitions. [2025-02-05 15:35:10,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 888 transitions. [2025-02-05 15:35:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-05 15:35:10,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:10,222 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:10,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:35:10,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:10,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1105830150, now seen corresponding path program 1 times [2025-02-05 15:35:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:10,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706839266] [2025-02-05 15:35:10,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:10,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-05 15:35:10,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-05 15:35:10,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:10,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:10,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706839266] [2025-02-05 15:35:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706839266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:10,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985739300] [2025-02-05 15:35:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:10,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:10,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:10,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:10,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:10,395 INFO L87 Difference]: Start difference. First operand 536 states and 888 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:10,450 INFO L93 Difference]: Finished difference Result 1054 states and 1755 transitions. [2025-02-05 15:35:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2025-02-05 15:35:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,455 INFO L225 Difference]: With dead ends: 1054 [2025-02-05 15:35:10,455 INFO L226 Difference]: Without dead ends: 536 [2025-02-05 15:35:10,458 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 15:35:10,460 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 2 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:10,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2633 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-02-05 15:35:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2025-02-05 15:35:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6801909307875895) internal successors, (704), 438 states have internal predecessors, (704), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 887 transitions. [2025-02-05 15:35:10,483 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 887 transitions. Word has length 123 [2025-02-05 15:35:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:10,483 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 887 transitions. [2025-02-05 15:35:10,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 887 transitions. [2025-02-05 15:35:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:35:10,490 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:10,491 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:10,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:35:10,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:10,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash -188062980, now seen corresponding path program 1 times [2025-02-05 15:35:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526423453] [2025-02-05 15:35:10,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:10,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:35:10,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:35:10,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:10,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526423453] [2025-02-05 15:35:10,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526423453] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:10,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:10,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:10,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421629497] [2025-02-05 15:35:10,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:10,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:10,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:10,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:10,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:10,785 INFO L87 Difference]: Start difference. First operand 536 states and 887 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:10,829 INFO L93 Difference]: Finished difference Result 1054 states and 1754 transitions. [2025-02-05 15:35:10,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:10,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2025-02-05 15:35:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,835 INFO L225 Difference]: With dead ends: 1054 [2025-02-05 15:35:10,835 INFO L226 Difference]: Without dead ends: 536 [2025-02-05 15:35:10,837 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 15:35:10,839 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 1 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:10,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2633 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-02-05 15:35:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2025-02-05 15:35:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6778042959427208) internal successors, (703), 438 states have internal predecessors, (703), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 886 transitions. [2025-02-05 15:35:10,876 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 886 transitions. Word has length 124 [2025-02-05 15:35:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:10,877 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 886 transitions. [2025-02-05 15:35:10,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 886 transitions. [2025-02-05 15:35:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:35:10,881 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:10,881 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:10,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:35:10,881 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:10,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1750049897, now seen corresponding path program 1 times [2025-02-05 15:35:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702289094] [2025-02-05 15:35:10,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:10,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:35:10,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:35:10,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:10,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:11,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702289094] [2025-02-05 15:35:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702289094] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:11,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:11,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 15:35:11,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407559544] [2025-02-05 15:35:11,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:11,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 15:35:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:11,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 15:35:11,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:11,378 INFO L87 Difference]: Start difference. First operand 536 states and 886 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:11,538 INFO L93 Difference]: Finished difference Result 1020 states and 1686 transitions. [2025-02-05 15:35:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:35:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2025-02-05 15:35:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:11,545 INFO L225 Difference]: With dead ends: 1020 [2025-02-05 15:35:11,546 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 15:35:11,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:11,548 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 91 mSDsluCounter, 6035 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:11,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6909 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 15:35:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2025-02-05 15:35:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 429 states have (on average 1.6736596736596736) internal successors, (718), 450 states have internal predecessors, (718), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2025-02-05 15:35:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 905 transitions. [2025-02-05 15:35:11,575 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 905 transitions. Word has length 125 [2025-02-05 15:35:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:11,576 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 905 transitions. [2025-02-05 15:35:11,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 905 transitions. [2025-02-05 15:35:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:35:11,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:11,580 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:11,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:35:11,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:11,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1558334710, now seen corresponding path program 1 times [2025-02-05 15:35:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523394681] [2025-02-05 15:35:11,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:11,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:35:11,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:35:11,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:11,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:11,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523394681] [2025-02-05 15:35:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523394681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:11,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:11,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399208012] [2025-02-05 15:35:11,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:11,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:11,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:11,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:11,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:11,661 INFO L87 Difference]: Start difference. First operand 549 states and 905 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:11,723 INFO L93 Difference]: Finished difference Result 1072 states and 1780 transitions. [2025-02-05 15:35:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2025-02-05 15:35:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:11,726 INFO L225 Difference]: With dead ends: 1072 [2025-02-05 15:35:11,726 INFO L226 Difference]: Without dead ends: 530 [2025-02-05 15:35:11,732 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 15:35:11,736 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 0 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:11,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2635 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-02-05 15:35:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2025-02-05 15:35:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.6682808716707023) internal successors, (689), 432 states have internal predecessors, (689), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 872 transitions. [2025-02-05 15:35:11,783 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 872 transitions. Word has length 125 [2025-02-05 15:35:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:11,783 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 872 transitions. [2025-02-05 15:35:11,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 872 transitions. [2025-02-05 15:35:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-05 15:35:11,786 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:11,786 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:11,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:35:11,786 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:11,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1036800340, now seen corresponding path program 1 times [2025-02-05 15:35:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:11,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551622474] [2025-02-05 15:35:11,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:11,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-02-05 15:35:11,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-02-05 15:35:11,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:11,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:11,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:11,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551622474] [2025-02-05 15:35:11,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551622474] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:11,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:11,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300974681] [2025-02-05 15:35:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:11,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:11,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:11,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:11,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:11,889 INFO L87 Difference]: Start difference. First operand 530 states and 872 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:12,031 INFO L93 Difference]: Finished difference Result 1017 states and 1678 transitions. [2025-02-05 15:35:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:12,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 126 [2025-02-05 15:35:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:12,035 INFO L225 Difference]: With dead ends: 1017 [2025-02-05 15:35:12,035 INFO L226 Difference]: Without dead ends: 539 [2025-02-05 15:35:12,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:12,037 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 55 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:12,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4116 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:12,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-05 15:35:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 530. [2025-02-05 15:35:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.658595641646489) internal successors, (685), 432 states have internal predecessors, (685), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 868 transitions. [2025-02-05 15:35:12,052 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 868 transitions. Word has length 126 [2025-02-05 15:35:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:12,052 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 868 transitions. [2025-02-05 15:35:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 868 transitions. [2025-02-05 15:35:12,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:35:12,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:12,055 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:12,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:35:12,055 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:12,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1687818574, now seen corresponding path program 1 times [2025-02-05 15:35:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:12,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643739164] [2025-02-05 15:35:12,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:12,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:35:12,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:35:12,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:12,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:12,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643739164] [2025-02-05 15:35:12,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643739164] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:12,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:12,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:12,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81871752] [2025-02-05 15:35:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:12,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:12,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:12,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:12,169 INFO L87 Difference]: Start difference. First operand 530 states and 868 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:12,300 INFO L93 Difference]: Finished difference Result 1017 states and 1674 transitions. [2025-02-05 15:35:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2025-02-05 15:35:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:12,304 INFO L225 Difference]: With dead ends: 1017 [2025-02-05 15:35:12,304 INFO L226 Difference]: Without dead ends: 539 [2025-02-05 15:35:12,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:12,306 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 54 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:12,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4116 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-05 15:35:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 530. [2025-02-05 15:35:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.6489104116222761) internal successors, (681), 432 states have internal predecessors, (681), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 864 transitions. [2025-02-05 15:35:12,330 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 864 transitions. Word has length 127 [2025-02-05 15:35:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:12,331 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 864 transitions. [2025-02-05 15:35:12,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 864 transitions. [2025-02-05 15:35:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 15:35:12,334 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:12,334 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:12,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:35:12,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:12,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -539798825, now seen corresponding path program 1 times [2025-02-05 15:35:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92541861] [2025-02-05 15:35:12,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:12,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:35:12,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:35:12,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:12,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:12,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92541861] [2025-02-05 15:35:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92541861] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014563952] [2025-02-05 15:35:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:12,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:12,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:12,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:12,627 INFO L87 Difference]: Start difference. First operand 530 states and 864 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:13,070 INFO L93 Difference]: Finished difference Result 1017 states and 1670 transitions. [2025-02-05 15:35:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2025-02-05 15:35:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:13,074 INFO L225 Difference]: With dead ends: 1017 [2025-02-05 15:35:13,074 INFO L226 Difference]: Without dead ends: 539 [2025-02-05 15:35:13,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:13,077 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 53 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:13,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4098 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:35:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-05 15:35:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 530. [2025-02-05 15:35:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.639225181598063) internal successors, (677), 432 states have internal predecessors, (677), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 860 transitions. [2025-02-05 15:35:13,119 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 860 transitions. Word has length 128 [2025-02-05 15:35:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:13,119 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 860 transitions. [2025-02-05 15:35:13,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 860 transitions. [2025-02-05 15:35:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 15:35:13,122 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:13,122 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:13,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 15:35:13,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:13,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2010134906, now seen corresponding path program 1 times [2025-02-05 15:35:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782801892] [2025-02-05 15:35:13,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:13,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-05 15:35:13,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 15:35:13,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:13,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:13,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782801892] [2025-02-05 15:35:13,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782801892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:13,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:35:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680967706] [2025-02-05 15:35:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:13,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:35:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:13,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:35:13,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:13,362 INFO L87 Difference]: Start difference. First operand 530 states and 860 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:13,423 INFO L93 Difference]: Finished difference Result 1008 states and 1652 transitions. [2025-02-05 15:35:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2025-02-05 15:35:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:13,426 INFO L225 Difference]: With dead ends: 1008 [2025-02-05 15:35:13,426 INFO L226 Difference]: Without dead ends: 509 [2025-02-05 15:35:13,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:35:13,430 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 84 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:13,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5021 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-02-05 15:35:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2025-02-05 15:35:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 392 states have (on average 1.6403061224489797) internal successors, (643), 411 states have internal predecessors, (643), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 826 transitions. [2025-02-05 15:35:13,445 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 826 transitions. Word has length 128 [2025-02-05 15:35:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:13,445 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 826 transitions. [2025-02-05 15:35:13,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 826 transitions. [2025-02-05 15:35:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 15:35:13,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:13,448 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 15:35:13,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 15:35:13,448 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:13,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1810807631, now seen corresponding path program 1 times [2025-02-05 15:35:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:13,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415050453] [2025-02-05 15:35:13,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:13,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 15:35:13,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 15:35:13,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:13,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:13,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415050453] [2025-02-05 15:35:13,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415050453] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:13,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:13,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336050761] [2025-02-05 15:35:13,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:13,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:13,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:13,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:13,569 INFO L87 Difference]: Start difference. First operand 509 states and 826 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:13,633 INFO L93 Difference]: Finished difference Result 987 states and 1618 transitions. [2025-02-05 15:35:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:13,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2025-02-05 15:35:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:13,637 INFO L225 Difference]: With dead ends: 987 [2025-02-05 15:35:13,637 INFO L226 Difference]: Without dead ends: 509 [2025-02-05 15:35:13,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:13,640 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 17 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:13,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4036 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-02-05 15:35:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2025-02-05 15:35:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 392 states have (on average 1.6377551020408163) internal successors, (642), 411 states have internal predecessors, (642), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 825 transitions. [2025-02-05 15:35:13,654 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 825 transitions. Word has length 129 [2025-02-05 15:35:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:13,654 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 825 transitions. [2025-02-05 15:35:13,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 825 transitions. [2025-02-05 15:35:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 15:35:13,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:13,656 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:13,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 15:35:13,656 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:13,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash 803246170, now seen corresponding path program 1 times [2025-02-05 15:35:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160219662] [2025-02-05 15:35:13,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:13,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 15:35:13,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 15:35:13,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:13,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160219662] [2025-02-05 15:35:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160219662] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127330816] [2025-02-05 15:35:13,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:13,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:13,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:13,755 INFO L87 Difference]: Start difference. First operand 509 states and 825 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:13,812 INFO L93 Difference]: Finished difference Result 987 states and 1617 transitions. [2025-02-05 15:35:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:13,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2025-02-05 15:35:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:13,816 INFO L225 Difference]: With dead ends: 987 [2025-02-05 15:35:13,816 INFO L226 Difference]: Without dead ends: 509 [2025-02-05 15:35:13,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:13,818 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 16 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:13,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4036 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-02-05 15:35:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2025-02-05 15:35:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 392 states have (on average 1.635204081632653) internal successors, (641), 411 states have internal predecessors, (641), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 824 transitions. [2025-02-05 15:35:13,847 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 824 transitions. Word has length 130 [2025-02-05 15:35:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:13,847 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 824 transitions. [2025-02-05 15:35:13,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:35:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 824 transitions. [2025-02-05 15:35:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-02-05 15:35:13,850 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:13,850 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:13,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 15:35:13,850 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:13,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash -699810796, now seen corresponding path program 1 times [2025-02-05 15:35:13,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:13,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037311416] [2025-02-05 15:35:13,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:13,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:13,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-02-05 15:35:13,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-02-05 15:35:13,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:13,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 15:35:14,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:14,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037311416] [2025-02-05 15:35:14,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037311416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:14,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:14,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-05 15:35:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811226764] [2025-02-05 15:35:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:14,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:35:14,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:14,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:35:14,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:14,073 INFO L87 Difference]: Start difference. First operand 509 states and 824 transitions. Second operand has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:14,174 INFO L93 Difference]: Finished difference Result 981 states and 1605 transitions. [2025-02-05 15:35:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:35:14,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2025-02-05 15:35:14,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:14,179 INFO L225 Difference]: With dead ends: 981 [2025-02-05 15:35:14,179 INFO L226 Difference]: Without dead ends: 509 [2025-02-05 15:35:14,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:14,182 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 6 mSDsluCounter, 6442 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7250 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:14,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7250 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-02-05 15:35:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2025-02-05 15:35:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 392 states have (on average 1.6326530612244898) internal successors, (640), 411 states have internal predecessors, (640), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2025-02-05 15:35:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 823 transitions. [2025-02-05 15:35:14,199 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 823 transitions. Word has length 131 [2025-02-05 15:35:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:14,200 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 823 transitions. [2025-02-05 15:35:14,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-05 15:35:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 823 transitions. [2025-02-05 15:35:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-05 15:35:14,203 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:14,203 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-05 15:35:14,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 15:35:14,203 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:14,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash -951205363, now seen corresponding path program 1 times [2025-02-05 15:35:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:14,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290126917] [2025-02-05 15:35:14,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:14,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-05 15:35:14,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-05 15:35:14,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:14,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:35:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290126917] [2025-02-05 15:35:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290126917] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856420380] [2025-02-05 15:35:14,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:14,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:14,312 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 15:35:14,314 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 15:35:14,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-05 15:35:14,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-05 15:35:14,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:14,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:14,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:35:14,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:35:14,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856420380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:35:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830579587] [2025-02-05 15:35:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:14,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:35:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:14,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:35:14,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:14,897 INFO L87 Difference]: Start difference. First operand 509 states and 823 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:15,333 INFO L93 Difference]: Finished difference Result 981 states and 1627 transitions. [2025-02-05 15:35:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:15,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-02-05 15:35:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:15,338 INFO L225 Difference]: With dead ends: 981 [2025-02-05 15:35:15,338 INFO L226 Difference]: Without dead ends: 517 [2025-02-05 15:35:15,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:15,341 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 782 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:15,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2055 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:35:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2025-02-05 15:35:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2025-02-05 15:35:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 399 states have (on average 1.6340852130325814) internal successors, (652), 418 states have internal predecessors, (652), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (90), 87 states have call predecessors, (90), 89 states have call successors, (90) [2025-02-05 15:35:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 836 transitions. [2025-02-05 15:35:15,358 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 836 transitions. Word has length 132 [2025-02-05 15:35:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:15,358 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 836 transitions. [2025-02-05 15:35:15,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 836 transitions. [2025-02-05 15:35:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-02-05 15:35:15,361 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:15,361 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-02-05 15:35:15,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 15:35:15,566 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,SelfDestructingSolverStorable14 [2025-02-05 15:35:15,566 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:15,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1198208853, now seen corresponding path program 1 times [2025-02-05 15:35:15,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:15,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926082855] [2025-02-05 15:35:15,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:15,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:15,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 15:35:15,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 15:35:15,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:15,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:35:15,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926082855] [2025-02-05 15:35:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926082855] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654643972] [2025-02-05 15:35:15,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:15,672 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 15:35:15,673 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 15:35:15,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 15:35:15,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 15:35:15,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:15,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:15,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:35:15,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:35:16,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654643972] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:16,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:35:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386690368] [2025-02-05 15:35:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:16,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:35:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:16,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:35:16,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:16,008 INFO L87 Difference]: Start difference. First operand 517 states and 836 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:16,888 INFO L93 Difference]: Finished difference Result 997 states and 1650 transitions. [2025-02-05 15:35:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2025-02-05 15:35:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:16,893 INFO L225 Difference]: With dead ends: 997 [2025-02-05 15:35:16,893 INFO L226 Difference]: Without dead ends: 525 [2025-02-05 15:35:16,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:16,896 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 780 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:16,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2052 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 15:35:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-02-05 15:35:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2025-02-05 15:35:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 406 states have (on average 1.6354679802955665) internal successors, (664), 425 states have internal predecessors, (664), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 87 states have call predecessors, (91), 89 states have call successors, (91) [2025-02-05 15:35:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 849 transitions. [2025-02-05 15:35:16,914 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 849 transitions. Word has length 134 [2025-02-05 15:35:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:16,914 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 849 transitions. [2025-02-05 15:35:16,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 849 transitions. [2025-02-05 15:35:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:35:16,916 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:16,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:16,924 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 15:35:17,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 15:35:17,121 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:17,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1023601709, now seen corresponding path program 1 times [2025-02-05 15:35:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730573943] [2025-02-05 15:35:17,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:17,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:35:17,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:35:17,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:17,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:35:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730573943] [2025-02-05 15:35:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730573943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444186262] [2025-02-05 15:35:17,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:17,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:17,221 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 15:35:17,222 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 15:35:17,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:35:17,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:35:17,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:17,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:17,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:35:17,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:35:17,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444186262] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:17,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:17,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:35:17,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326130360] [2025-02-05 15:35:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:17,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:35:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:17,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:35:17,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:17,627 INFO L87 Difference]: Start difference. First operand 525 states and 849 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:18,137 INFO L93 Difference]: Finished difference Result 1013 states and 1673 transitions. [2025-02-05 15:35:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:18,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2025-02-05 15:35:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:18,142 INFO L225 Difference]: With dead ends: 1013 [2025-02-05 15:35:18,142 INFO L226 Difference]: Without dead ends: 533 [2025-02-05 15:35:18,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:18,145 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 761 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:18,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 2049 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:35:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-02-05 15:35:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-02-05 15:35:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 413 states have (on average 1.6368038740920097) internal successors, (676), 432 states have internal predecessors, (676), 94 states have call successors, (94), 26 states have call predecessors, (94), 25 states have return successors, (92), 87 states have call predecessors, (92), 89 states have call successors, (92) [2025-02-05 15:35:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 862 transitions. [2025-02-05 15:35:18,159 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 862 transitions. Word has length 136 [2025-02-05 15:35:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:18,160 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 862 transitions. [2025-02-05 15:35:18,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 862 transitions. [2025-02-05 15:35:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 15:35:18,162 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:18,162 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:35:18,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:18,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:18,363 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:18,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1613329381, now seen corresponding path program 1 times [2025-02-05 15:35:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209688689] [2025-02-05 15:35:18,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:18,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:35:18,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:35:18,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:18,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:35:18,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:18,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209688689] [2025-02-05 15:35:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209688689] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:18,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225223380] [2025-02-05 15:35:18,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:18,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:18,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:18,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:35:18,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:35:18,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 15:35:18,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 15:35:18,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:18,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:18,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:35:18,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:35:18,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225223380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:18,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-05 15:35:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421224013] [2025-02-05 15:35:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:18,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:35:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:18,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:35:18,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:18,778 INFO L87 Difference]: Start difference. First operand 533 states and 862 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:19,144 INFO L93 Difference]: Finished difference Result 1029 states and 1696 transitions. [2025-02-05 15:35:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:35:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-02-05 15:35:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:19,148 INFO L225 Difference]: With dead ends: 1029 [2025-02-05 15:35:19,148 INFO L226 Difference]: Without dead ends: 541 [2025-02-05 15:35:19,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:19,151 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 768 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:19,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2046 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:35:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-02-05 15:35:19,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-02-05 15:35:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 420 states have (on average 1.638095238095238) internal successors, (688), 439 states have internal predecessors, (688), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2025-02-05 15:35:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 875 transitions. [2025-02-05 15:35:19,165 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 875 transitions. Word has length 138 [2025-02-05 15:35:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:19,166 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 875 transitions. [2025-02-05 15:35:19,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 15:35:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 875 transitions. [2025-02-05 15:35:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-05 15:35:19,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:19,169 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, 1, 1, 1, 1] [2025-02-05 15:35:19,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:35:19,369 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,SelfDestructingSolverStorable17 [2025-02-05 15:35:19,370 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:19,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash 999890125, now seen corresponding path program 1 times [2025-02-05 15:35:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613276865] [2025-02-05 15:35:19,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:19,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:35:19,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:35:19,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:19,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 15:35:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613276865] [2025-02-05 15:35:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613276865] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036527144] [2025-02-05 15:35:19,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:19,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:19,666 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 15:35:19,668 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 15:35:19,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 15:35:19,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 15:35:19,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:19,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:19,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 15:35:19,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:35:20,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036527144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-02-05 15:35:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249806286] [2025-02-05 15:35:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:20,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:35:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:20,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:35:20,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:35:20,015 INFO L87 Difference]: Start difference. First operand 541 states and 875 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:35:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:22,580 INFO L93 Difference]: Finished difference Result 1867 states and 3088 transitions. [2025-02-05 15:35:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 15:35:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 140 [2025-02-05 15:35:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:22,591 INFO L225 Difference]: With dead ends: 1867 [2025-02-05 15:35:22,591 INFO L226 Difference]: Without dead ends: 1371 [2025-02-05 15:35:22,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-02-05 15:35:22,594 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 2274 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 5015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:22,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2357 Valid, 2744 Invalid, 5015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-05 15:35:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2025-02-05 15:35:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1257. [2025-02-05 15:35:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 982 states have (on average 1.6608961303462322) internal successors, (1631), 1021 states have internal predecessors, (1631), 210 states have call successors, (210), 59 states have call predecessors, (210), 64 states have return successors, (229), 202 states have call predecessors, (229), 205 states have call successors, (229) [2025-02-05 15:35:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 2070 transitions. [2025-02-05 15:35:22,700 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 2070 transitions. Word has length 140 [2025-02-05 15:35:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:22,705 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 2070 transitions. [2025-02-05 15:35:22,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:35:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 2070 transitions. [2025-02-05 15:35:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-05 15:35:22,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:22,709 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:22,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:22,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:22,910 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:22,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash 747308019, now seen corresponding path program 1 times [2025-02-05 15:35:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489016472] [2025-02-05 15:35:22,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:22,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:35:22,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:35:22,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:22,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:23,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489016472] [2025-02-05 15:35:23,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489016472] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:23,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702972499] [2025-02-05 15:35:23,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:23,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:23,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:23,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:35:23,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 15:35:23,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 15:35:23,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 15:35:23,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:23,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:23,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 15:35:23,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:23,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702972499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:23,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:23,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-02-05 15:35:23,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502790923] [2025-02-05 15:35:23,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:23,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:35:23,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:23,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:35:23,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:35:23,484 INFO L87 Difference]: Start difference. First operand 1257 states and 2070 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:35:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:25,172 INFO L93 Difference]: Finished difference Result 2727 states and 4513 transitions. [2025-02-05 15:35:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 15:35:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2025-02-05 15:35:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:25,179 INFO L225 Difference]: With dead ends: 2727 [2025-02-05 15:35:25,179 INFO L226 Difference]: Without dead ends: 1515 [2025-02-05 15:35:25,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:35:25,184 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 2024 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 3202 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 3202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:25,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 2020 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 3202 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 15:35:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2025-02-05 15:35:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1328. [2025-02-05 15:35:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1034 states have (on average 1.6470019342359767) internal successors, (1703), 1079 states have internal predecessors, (1703), 218 states have call successors, (218), 64 states have call predecessors, (218), 75 states have return successors, (255), 210 states have call predecessors, (255), 213 states have call successors, (255) [2025-02-05 15:35:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2176 transitions. [2025-02-05 15:35:25,240 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2176 transitions. Word has length 142 [2025-02-05 15:35:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:25,241 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2176 transitions. [2025-02-05 15:35:25,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-05 15:35:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2176 transitions. [2025-02-05 15:35:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-02-05 15:35:25,244 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:25,244 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:25,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 15:35:25,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:25,445 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:25,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1623475697, now seen corresponding path program 1 times [2025-02-05 15:35:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98643985] [2025-02-05 15:35:25,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:25,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:35:25,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:35:25,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:25,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98643985] [2025-02-05 15:35:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98643985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608278186] [2025-02-05 15:35:25,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:25,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:25,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:25,646 INFO L229 MonitoredProcess]: Starting monitored process 8 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 15:35:25,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:35:25,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:35:25,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:35:25,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:25,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:25,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:35:25,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 15:35:25,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:25,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608278186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:25,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:25,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-02-05 15:35:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095373732] [2025-02-05 15:35:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:25,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:35:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:25,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:35:25,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:35:25,909 INFO L87 Difference]: Start difference. First operand 1328 states and 2176 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:35:26,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:26,028 INFO L93 Difference]: Finished difference Result 3292 states and 5462 transitions. [2025-02-05 15:35:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:35:26,028 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2025-02-05 15:35:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:26,037 INFO L225 Difference]: With dead ends: 3292 [2025-02-05 15:35:26,037 INFO L226 Difference]: Without dead ends: 2010 [2025-02-05 15:35:26,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:35:26,042 INFO L435 NwaCegarLoop]: 1457 mSDtfsCounter, 764 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:26,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2270 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2025-02-05 15:35:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1324. [2025-02-05 15:35:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1032 states have (on average 1.6463178294573644) internal successors, (1699), 1075 states have internal predecessors, (1699), 218 states have call successors, (218), 64 states have call predecessors, (218), 73 states have return successors, (246), 210 states have call predecessors, (246), 213 states have call successors, (246) [2025-02-05 15:35:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2163 transitions. [2025-02-05 15:35:26,093 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2163 transitions. Word has length 147 [2025-02-05 15:35:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:26,093 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2163 transitions. [2025-02-05 15:35:26,093 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 15:35:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2163 transitions. [2025-02-05 15:35:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-02-05 15:35:26,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:26,096 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:26,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 15:35:26,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:26,299 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:26,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2072172336, now seen corresponding path program 1 times [2025-02-05 15:35:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909885669] [2025-02-05 15:35:26,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:26,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:35:26,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:35:26,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:26,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:26,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909885669] [2025-02-05 15:35:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909885669] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015834045] [2025-02-05 15:35:26,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:26,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:26,651 INFO L229 MonitoredProcess]: Starting monitored process 9 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 15:35:26,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:35:26,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-02-05 15:35:26,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-02-05 15:35:26,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:26,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:26,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:35:26,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:27,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015834045] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:27,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032015102] [2025-02-05 15:35:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:27,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:27,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:27,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:27,048 INFO L87 Difference]: Start difference. First operand 1324 states and 2163 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:28,296 INFO L93 Difference]: Finished difference Result 4149 states and 6896 transitions. [2025-02-05 15:35:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:28,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2025-02-05 15:35:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:28,312 INFO L225 Difference]: With dead ends: 4149 [2025-02-05 15:35:28,312 INFO L226 Difference]: Without dead ends: 2870 [2025-02-05 15:35:28,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:28,318 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 1808 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:28,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 912 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 15:35:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2025-02-05 15:35:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2758. [2025-02-05 15:35:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2121 states have (on average 1.6482791136256483) internal successors, (3496), 2217 states have internal predecessors, (3496), 487 states have call successors, (487), 123 states have call predecessors, (487), 149 states have return successors, (595), 479 states have call predecessors, (595), 482 states have call successors, (595) [2025-02-05 15:35:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4578 transitions. [2025-02-05 15:35:28,417 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4578 transitions. Word has length 147 [2025-02-05 15:35:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:28,418 INFO L471 AbstractCegarLoop]: Abstraction has 2758 states and 4578 transitions. [2025-02-05 15:35:28,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4578 transitions. [2025-02-05 15:35:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-05 15:35:28,420 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:28,421 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:28,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:28,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:28,621 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:28,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 186989073, now seen corresponding path program 1 times [2025-02-05 15:35:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005817775] [2025-02-05 15:35:28,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:28,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:35:28,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:35:28,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:28,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005817775] [2025-02-05 15:35:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005817775] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591649601] [2025-02-05 15:35:28,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:28,967 INFO L229 MonitoredProcess]: Starting monitored process 10 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 15:35:28,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:35:29,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-05 15:35:29,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:35:29,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:29,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:29,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:35:29,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:29,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591649601] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:29,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:29,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:29,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792762858] [2025-02-05 15:35:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:29,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:29,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:29,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:29,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:29,318 INFO L87 Difference]: Start difference. First operand 2758 states and 4578 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:30,442 INFO L93 Difference]: Finished difference Result 8878 states and 15045 transitions. [2025-02-05 15:35:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:30,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2025-02-05 15:35:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:30,477 INFO L225 Difference]: With dead ends: 8878 [2025-02-05 15:35:30,480 INFO L226 Difference]: Without dead ends: 6165 [2025-02-05 15:35:30,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:30,493 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1813 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:30,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 872 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 15:35:30,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2025-02-05 15:35:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 5926. [2025-02-05 15:35:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 4478 states have (on average 1.6435908887896382) internal successors, (7360), 4702 states have internal predecessors, (7360), 1138 states have call successors, (1138), 241 states have call predecessors, (1138), 309 states have return successors, (1532), 1134 states have call predecessors, (1532), 1133 states have call successors, (1532) [2025-02-05 15:35:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 10030 transitions. [2025-02-05 15:35:30,740 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 10030 transitions. Word has length 148 [2025-02-05 15:35:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:30,742 INFO L471 AbstractCegarLoop]: Abstraction has 5926 states and 10030 transitions. [2025-02-05 15:35:30,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 10030 transitions. [2025-02-05 15:35:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-05 15:35:30,746 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:30,746 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:30,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:30,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:30,950 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:30,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1501512234, now seen corresponding path program 1 times [2025-02-05 15:35:30,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:30,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4866622] [2025-02-05 15:35:30,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:30,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:30,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:35:30,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:35:30,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:30,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4866622] [2025-02-05 15:35:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4866622] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213706814] [2025-02-05 15:35:31,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:31,129 INFO L229 MonitoredProcess]: Starting monitored process 11 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 15:35:31,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:35:31,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-02-05 15:35:31,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-02-05 15:35:31,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:31,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:31,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:35:31,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:31,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213706814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:31,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:31,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021547573] [2025-02-05 15:35:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:31,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:31,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:31,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:31,446 INFO L87 Difference]: Start difference. First operand 5926 states and 10030 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:32,889 INFO L93 Difference]: Finished difference Result 19478 states and 34002 transitions. [2025-02-05 15:35:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:32,889 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2025-02-05 15:35:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:32,974 INFO L225 Difference]: With dead ends: 19478 [2025-02-05 15:35:32,974 INFO L226 Difference]: Without dead ends: 13597 [2025-02-05 15:35:33,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:33,006 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1798 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:33,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 869 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 15:35:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13597 states. [2025-02-05 15:35:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13597 to 13103. [2025-02-05 15:35:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 9695 states have (on average 1.6344507478081485) internal successors, (15846), 10233 states have internal predecessors, (15846), 2758 states have call successors, (2758), 477 states have call predecessors, (2758), 649 states have return successors, (4182), 2774 states have call predecessors, (4182), 2753 states have call successors, (4182) [2025-02-05 15:35:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 22786 transitions. [2025-02-05 15:35:33,650 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 22786 transitions. Word has length 149 [2025-02-05 15:35:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:33,651 INFO L471 AbstractCegarLoop]: Abstraction has 13103 states and 22786 transitions. [2025-02-05 15:35:33,651 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 22786 transitions. [2025-02-05 15:35:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-02-05 15:35:33,654 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:33,654 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:33,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:33,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-05 15:35:33,855 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:33,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash -697946517, now seen corresponding path program 1 times [2025-02-05 15:35:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923116287] [2025-02-05 15:35:33,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:33,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:33,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:35:33,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:35:33,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:33,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:34,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923116287] [2025-02-05 15:35:34,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923116287] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:34,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605179485] [2025-02-05 15:35:34,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:34,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:34,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:34,042 INFO L229 MonitoredProcess]: Starting monitored process 12 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 15:35:34,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 15:35:34,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-02-05 15:35:34,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 15:35:34,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:34,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:34,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:35:34,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:34,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605179485] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:34,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:34,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:34,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551092471] [2025-02-05 15:35:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:34,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:34,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:34,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:34,343 INFO L87 Difference]: Start difference. First operand 13103 states and 22786 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:36,686 INFO L93 Difference]: Finished difference Result 43827 states and 80157 transitions. [2025-02-05 15:35:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2025-02-05 15:35:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:36,933 INFO L225 Difference]: With dead ends: 43827 [2025-02-05 15:35:36,933 INFO L226 Difference]: Without dead ends: 30769 [2025-02-05 15:35:37,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:37,077 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 1786 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:37,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 863 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 15:35:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2025-02-05 15:35:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 29820. [2025-02-05 15:35:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29820 states, 21552 states have (on average 1.6221232368225686) internal successors, (34960), 22872 states have internal predecessors, (34960), 6886 states have call successors, (6886), 949 states have call predecessors, (6886), 1381 states have return successors, (12056), 6978 states have call predecessors, (12056), 6881 states have call successors, (12056) [2025-02-05 15:35:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29820 states to 29820 states and 53902 transitions. [2025-02-05 15:35:38,724 INFO L78 Accepts]: Start accepts. Automaton has 29820 states and 53902 transitions. Word has length 150 [2025-02-05 15:35:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:38,726 INFO L471 AbstractCegarLoop]: Abstraction has 29820 states and 53902 transitions. [2025-02-05 15:35:38,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 29820 states and 53902 transitions. [2025-02-05 15:35:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-02-05 15:35:38,732 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:38,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:35:38,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:38,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-05 15:35:38,933 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:38,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -161694844, now seen corresponding path program 1 times [2025-02-05 15:35:38,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:38,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501078747] [2025-02-05 15:35:38,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:38,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:38,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 15:35:38,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 15:35:38,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:38,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:35:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501078747] [2025-02-05 15:35:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501078747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642821917] [2025-02-05 15:35:39,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:39,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:39,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:39,335 INFO L229 MonitoredProcess]: Starting monitored process 13 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 15:35:39,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 15:35:39,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 15:35:39,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 15:35:39,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:39,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:39,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:35:39,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:35:39,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642821917] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274222007] [2025-02-05 15:35:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:39,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:39,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:39,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:39,651 INFO L87 Difference]: Start difference. First operand 29820 states and 53902 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:44,371 INFO L93 Difference]: Finished difference Result 101207 states and 199217 transitions. [2025-02-05 15:35:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:44,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2025-02-05 15:35:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:45,026 INFO L225 Difference]: With dead ends: 101207 [2025-02-05 15:35:45,026 INFO L226 Difference]: Without dead ends: 71422 [2025-02-05 15:35:45,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:45,205 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 1761 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:45,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 960 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 15:35:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71422 states. [2025-02-05 15:35:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71422 to 69815. [2025-02-05 15:35:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69815 states, 49231 states have (on average 1.607686213970872) internal successors, (79148), 52525 states have internal predecessors, (79148), 17602 states have call successors, (17602), 1890 states have call predecessors, (17602), 2981 states have return successors, (36665), 17953 states have call predecessors, (36665), 17597 states have call successors, (36665) [2025-02-05 15:35:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69815 states to 69815 states and 133415 transitions. [2025-02-05 15:35:50,286 INFO L78 Accepts]: Start accepts. Automaton has 69815 states and 133415 transitions. Word has length 151 [2025-02-05 15:35:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:50,287 INFO L471 AbstractCegarLoop]: Abstraction has 69815 states and 133415 transitions. [2025-02-05 15:35:50,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 15:35:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 69815 states and 133415 transitions. [2025-02-05 15:35:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-02-05 15:35:50,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:50,306 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:50,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 15:35:50,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:50,506 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:50,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash 795268897, now seen corresponding path program 1 times [2025-02-05 15:35:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656189273] [2025-02-05 15:35:50,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:50,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-02-05 15:35:50,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-02-05 15:35:50,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:50,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-02-05 15:35:50,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656189273] [2025-02-05 15:35:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656189273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411134026] [2025-02-05 15:35:50,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:50,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:50,922 INFO L229 MonitoredProcess]: Starting monitored process 14 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 15:35:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 15:35:51,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-02-05 15:35:51,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-02-05 15:35:51,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:51,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:51,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:35:51,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 15:35:51,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411134026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:51,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:51,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:35:51,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309219941] [2025-02-05 15:35:51,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:51,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:51,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:51,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:35:51,284 INFO L87 Difference]: Start difference. First operand 69815 states and 133415 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-05 15:35:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:55,724 INFO L93 Difference]: Finished difference Result 142464 states and 282104 transitions. [2025-02-05 15:35:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 199 [2025-02-05 15:35:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:56,310 INFO L225 Difference]: With dead ends: 142464 [2025-02-05 15:35:56,310 INFO L226 Difference]: Without dead ends: 72695 [2025-02-05 15:35:56,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:56,745 INFO L435 NwaCegarLoop]: 762 mSDtfsCounter, 144 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:56,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2263 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72695 states. [2025-02-05 15:36:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72695 to 72311. [2025-02-05 15:36:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72311 states, 51663 states have (on average 1.622437721386679) internal successors, (83820), 54957 states have internal predecessors, (83820), 17602 states have call successors, (17602), 1954 states have call predecessors, (17602), 3045 states have return successors, (36665), 17953 states have call predecessors, (36665), 17597 states have call successors, (36665) [2025-02-05 15:36:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72311 states to 72311 states and 138087 transitions. [2025-02-05 15:36:02,062 INFO L78 Accepts]: Start accepts. Automaton has 72311 states and 138087 transitions. Word has length 199 [2025-02-05 15:36:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:36:02,062 INFO L471 AbstractCegarLoop]: Abstraction has 72311 states and 138087 transitions. [2025-02-05 15:36:02,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-05 15:36:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 72311 states and 138087 transitions. [2025-02-05 15:36:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-02-05 15:36:02,093 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:36:02,093 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:02,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 15:36:02,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:02,297 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:36:02,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:36:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash 206539005, now seen corresponding path program 1 times [2025-02-05 15:36:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:36:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824884716] [2025-02-05 15:36:02,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:36:02,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 15:36:02,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 15:36:02,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:02,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-05 15:36:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:36:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824884716] [2025-02-05 15:36:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824884716] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:36:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990959142] [2025-02-05 15:36:02,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:36:02,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:36:02,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:36:02,577 INFO L229 MonitoredProcess]: Starting monitored process 15 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 15:36:02,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 15:36:02,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 15:36:02,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 15:36:02,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:36:02,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:36:02,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:36:02,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:36:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 15:36:02,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:36:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990959142] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:36:02,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:36:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-02-05 15:36:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431910695] [2025-02-05 15:36:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:36:02,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:36:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:36:02,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:36:02,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:36:02,857 INFO L87 Difference]: Start difference. First operand 72311 states and 138087 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-02-05 15:36:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:36:07,845 INFO L93 Difference]: Finished difference Result 147456 states and 291640 transitions. [2025-02-05 15:36:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:36:07,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 204 [2025-02-05 15:36:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:36:08,696 INFO L225 Difference]: With dead ends: 147456 [2025-02-05 15:36:08,697 INFO L226 Difference]: Without dead ends: 75191 [2025-02-05 15:36:09,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:36:09,116 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 139 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:36:09,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2265 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:36:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75191 states.