./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product30.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_spec1_product30.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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:34:37,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:34:37,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:34:37,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:34:37,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:34:37,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:34:37,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:34:37,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:34:37,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:34:37,591 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:34:37,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:34:37,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:34:37,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:34:37,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:34:37,593 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:34:37,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:34:37,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:34:37,595 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:34:37,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:34:37,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:34:37,595 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:34:37,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:34:37,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:34:37,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:34:37,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:34:37,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:34:37,597 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 -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2025-02-05 15:34:37,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:34:37,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:34:37,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:34:37,894 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:34:37,894 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:34:37,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2025-02-05 15:34:39,196 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9df97e0c/e16ac41313ad4247a389411a50cd422f/FLAGf910d7d01 [2025-02-05 15:34:39,533 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:34:39,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2025-02-05 15:34:39,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9df97e0c/e16ac41313ad4247a389411a50cd422f/FLAGf910d7d01 [2025-02-05 15:34:39,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9df97e0c/e16ac41313ad4247a389411a50cd422f [2025-02-05 15:34:39,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:34:39,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:34:39,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:34:39,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:34:39,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:34:39,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:34:39" (1/1) ... [2025-02-05 15:34:39,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8d9517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:39, skipping insertion in model container [2025-02-05 15:34:39,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:34:39" (1/1) ... [2025-02-05 15:34:39,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:34:39,825 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_spec1_product30.cil.c[1545,1558] [2025-02-05 15:34:40,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:34:40,158 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:34:40,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-02-05 15:34:40,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2025-02-05 15:34:40,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2025-02-05 15:34:40,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] [2025-02-05 15:34:40,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] [2025-02-05 15:34:40,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] [2025-02-05 15:34:40,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] [2025-02-05 15:34:40,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] [2025-02-05 15:34:40,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] [2025-02-05 15:34:40,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] [2025-02-05 15:34:40,173 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_spec1_product30.cil.c[1545,1558] [2025-02-05 15:34:40,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:34:40,313 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:34:40,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40 WrapperNode [2025-02-05 15:34:40,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:34:40,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:34:40,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:34:40,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:34:40,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,385 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 905 [2025-02-05 15:34:40,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:34:40,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:34:40,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:34:40,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:34:40,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,444 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 15:34:40,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:34:40,502 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:34:40,502 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:34:40,502 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:34:40,503 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (1/1) ... [2025-02-05 15:34:40,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:34:40,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:40,534 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 15:34:40,541 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 15:34:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-02-05 15:34:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-02-05 15:34:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:34:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:34:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:34:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-02-05 15:34:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-02-05 15:34:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:34:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:34:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:34:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:34:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:34:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:34:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:34:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-02-05 15:34:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:34:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:34:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:34:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:34:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-02-05 15:34:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-02-05 15:34:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:34:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:34:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:34:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:34:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:34:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:34:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:34:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:34:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:34:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:34:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:34:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:34:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:34:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:34:40,769 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:34:40,771 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:34:40,851 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1721: #res := ~retValue_acc~12; [2025-02-05 15:34:40,881 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1643: #res := ~retValue_acc~10; [2025-02-05 15:34:40,886 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1798: #res := ~retValue_acc~13; [2025-02-05 15:34:40,897 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1971: #res := ~retValue_acc~14; [2025-02-05 15:34:41,184 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2581-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~23#1; [2025-02-05 15:34:41,184 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2547: #res#1 := ~retValue_acc~22#1; [2025-02-05 15:34:41,262 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2679: #res := ~retValue_acc~26; [2025-02-05 15:34:41,279 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1682: #res := ~retValue_acc~11; [2025-02-05 15:34:41,446 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2508: #res := ~retValue_acc~21; [2025-02-05 15:34:41,460 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2014: #res := ~retValue_acc~16; [2025-02-05 15:34:41,518 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2063-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-02-05 15:34:41,582 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2143-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-02-05 15:34:41,582 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2156-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-02-05 15:34:41,685 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1290: #res := ~retValue_acc~8; [2025-02-05 15:34:41,800 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2637-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~24#1; [2025-02-05 15:34:41,801 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2665-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-02-05 15:34:41,871 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L929-1: main_#res#1 := main_~retValue_acc~6#1; [2025-02-05 15:34:41,872 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-1: valid_product_#res#1 := valid_product_~retValue_acc~4#1; [2025-02-05 15:34:41,884 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1049: #res := ~retValue_acc~7; [2025-02-05 15:34:41,886 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1980: #res := ~retValue_acc~15; [2025-02-05 15:34:41,892 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1601: #res := ~retValue_acc~9; [2025-02-05 15:34:42,077 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2025-02-05 15:34:42,078 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:34:42,102 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:34:42,102 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:34:42,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:34:42 BoogieIcfgContainer [2025-02-05 15:34:42,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:34:42,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:34:42,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:34:42,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:34:42,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:34:39" (1/3) ... [2025-02-05 15:34:42,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73344f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:34:42, skipping insertion in model container [2025-02-05 15:34:42,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:34:40" (2/3) ... [2025-02-05 15:34:42,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73344f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:34:42, skipping insertion in model container [2025-02-05 15:34:42,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:34:42" (3/3) ... [2025-02-05 15:34:42,116 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2025-02-05 15:34:42,128 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:34:42,132 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product30.cil.c that has 27 procedures, 588 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:34:42,212 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:34:42,224 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;@9f24437, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:34:42,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:34:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 458 states have (on average 1.6877729257641922) internal successors, (773), 482 states have internal predecessors, (773), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2025-02-05 15:34:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 15:34:42,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:42,268 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:34:42,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:42,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash -868898989, now seen corresponding path program 1 times [2025-02-05 15:34:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:42,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046838957] [2025-02-05 15:34:42,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:42,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:42,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 15:34:42,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 15:34:42,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:42,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:42,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:42,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046838957] [2025-02-05 15:34:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046838957] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300634334] [2025-02-05 15:34:42,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:42,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:42,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:42,939 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 15:34:42,940 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 15:34:43,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 15:34:43,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 15:34:43,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:43,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:43,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:43,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:43,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300634334] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:43,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815039255] [2025-02-05 15:34:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:43,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:43,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:43,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:43,490 INFO L87 Difference]: Start difference. First operand has 588 states, 458 states have (on average 1.6877729257641922) internal successors, (773), 482 states have internal predecessors, (773), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:43,671 INFO L93 Difference]: Finished difference Result 1165 states and 1940 transitions. [2025-02-05 15:34:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:34:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2025-02-05 15:34:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:43,697 INFO L225 Difference]: With dead ends: 1165 [2025-02-05 15:34:43,698 INFO L226 Difference]: Without dead ends: 579 [2025-02-05 15:34:43,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:43,712 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 5 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:43,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2859 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2025-02-05 15:34:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2025-02-05 15:34:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6814159292035398) internal successors, (760), 473 states have internal predecessors, (760), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 957 transitions. [2025-02-05 15:34:43,810 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 957 transitions. Word has length 101 [2025-02-05 15:34:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:43,811 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 957 transitions. [2025-02-05 15:34:43,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 957 transitions. [2025-02-05 15:34:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-05 15:34:43,821 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:43,822 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:43,833 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 15:34:44,026 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,SelfDestructingSolverStorable0 [2025-02-05 15:34:44,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:44,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1767372551, now seen corresponding path program 1 times [2025-02-05 15:34:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594457447] [2025-02-05 15:34:44,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:44,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-05 15:34:44,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-05 15:34:44,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:44,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:44,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594457447] [2025-02-05 15:34:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594457447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521360894] [2025-02-05 15:34:44,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:44,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:44,317 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 15:34:44,320 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 15:34:44,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-05 15:34:44,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-05 15:34:44,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:44,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:44,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:44,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:44,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:44,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521360894] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:44,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:44,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:44,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798000341] [2025-02-05 15:34:44,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:44,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:44,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:44,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:44,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:44,778 INFO L87 Difference]: Start difference. First operand 579 states and 957 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:44,865 INFO L93 Difference]: Finished difference Result 1149 states and 1906 transitions. [2025-02-05 15:34:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:34:44,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2025-02-05 15:34:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:44,874 INFO L225 Difference]: With dead ends: 1149 [2025-02-05 15:34:44,874 INFO L226 Difference]: Without dead ends: 579 [2025-02-05 15:34:44,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:44,879 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 4 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:44,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2832 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2025-02-05 15:34:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2025-02-05 15:34:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6792035398230087) internal successors, (759), 473 states have internal predecessors, (759), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 956 transitions. [2025-02-05 15:34:44,927 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 956 transitions. Word has length 103 [2025-02-05 15:34:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:44,927 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 956 transitions. [2025-02-05 15:34:44,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 956 transitions. [2025-02-05 15:34:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-05 15:34:44,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:44,934 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:44,943 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 15:34:45,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:45,138 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:45,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 730139763, now seen corresponding path program 1 times [2025-02-05 15:34:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131203078] [2025-02-05 15:34:45,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:45,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-05 15:34:45,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-05 15:34:45,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:45,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131203078] [2025-02-05 15:34:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131203078] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939460229] [2025-02-05 15:34:45,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:45,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:45,333 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 15:34:45,336 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 15:34:45,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-05 15:34:45,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-05 15:34:45,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:45,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:45,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:45,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:45,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939460229] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519939248] [2025-02-05 15:34:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:45,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:45,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:45,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:45,719 INFO L87 Difference]: Start difference. First operand 579 states and 956 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:45,798 INFO L93 Difference]: Finished difference Result 1156 states and 1913 transitions. [2025-02-05 15:34:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2025-02-05 15:34:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:45,805 INFO L225 Difference]: With dead ends: 1156 [2025-02-05 15:34:45,806 INFO L226 Difference]: Without dead ends: 588 [2025-02-05 15:34:45,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:34:45,811 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 13 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:45,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2829 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2025-02-05 15:34:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2025-02-05 15:34:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6760869565217391) internal successors, (771), 481 states have internal predecessors, (771), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 968 transitions. [2025-02-05 15:34:45,849 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 968 transitions. Word has length 105 [2025-02-05 15:34:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:45,849 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 968 transitions. [2025-02-05 15:34:45,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 968 transitions. [2025-02-05 15:34:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-05 15:34:45,853 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:45,855 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:45,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:34:46,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:46,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:46,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -275689161, now seen corresponding path program 1 times [2025-02-05 15:34:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:46,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920814124] [2025-02-05 15:34:46,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:46,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:34:46,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:34:46,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:46,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:46,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920814124] [2025-02-05 15:34:46,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920814124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:46,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326703874] [2025-02-05 15:34:46,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:46,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:46,212 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 15:34:46,213 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 15:34:46,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-05 15:34:46,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-05 15:34:46,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:46,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:46,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:46,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:46,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326703874] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:46,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915489761] [2025-02-05 15:34:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:46,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:46,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:46,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:46,596 INFO L87 Difference]: Start difference. First operand 588 states and 968 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:46,672 INFO L93 Difference]: Finished difference Result 1158 states and 1914 transitions. [2025-02-05 15:34:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2025-02-05 15:34:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:46,678 INFO L225 Difference]: With dead ends: 1158 [2025-02-05 15:34:46,678 INFO L226 Difference]: Without dead ends: 588 [2025-02-05 15:34:46,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:34:46,683 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 11 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:46,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2829 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2025-02-05 15:34:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2025-02-05 15:34:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.673913043478261) internal successors, (770), 481 states have internal predecessors, (770), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 967 transitions. [2025-02-05 15:34:46,712 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 967 transitions. Word has length 106 [2025-02-05 15:34:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:46,713 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 967 transitions. [2025-02-05 15:34:46,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 967 transitions. [2025-02-05 15:34:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 15:34:46,716 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:46,717 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:46,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:34:46,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:46,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:46,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1961561846, now seen corresponding path program 1 times [2025-02-05 15:34:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84185] [2025-02-05 15:34:46,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:46,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:34:46,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:34:46,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:46,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84185] [2025-02-05 15:34:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84185] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691963076] [2025-02-05 15:34:47,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:47,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:47,053 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 15:34:47,055 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 15:34:47,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 15:34:47,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 15:34:47,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:47,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:47,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:47,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:47,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691963076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:47,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740268168] [2025-02-05 15:34:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:47,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:47,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:47,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:47,407 INFO L87 Difference]: Start difference. First operand 588 states and 967 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:47,477 INFO L93 Difference]: Finished difference Result 1158 states and 1913 transitions. [2025-02-05 15:34:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:47,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2025-02-05 15:34:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:47,484 INFO L225 Difference]: With dead ends: 1158 [2025-02-05 15:34:47,485 INFO L226 Difference]: Without dead ends: 588 [2025-02-05 15:34:47,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:34:47,489 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 10 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:47,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2829 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2025-02-05 15:34:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2025-02-05 15:34:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6717391304347826) internal successors, (769), 481 states have internal predecessors, (769), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 966 transitions. [2025-02-05 15:34:47,516 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 966 transitions. Word has length 107 [2025-02-05 15:34:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:47,517 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 966 transitions. [2025-02-05 15:34:47,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 966 transitions. [2025-02-05 15:34:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-05 15:34:47,521 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:47,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:47,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 15:34:47,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:47,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:47,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1655075610, now seen corresponding path program 1 times [2025-02-05 15:34:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:47,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113046544] [2025-02-05 15:34:47,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:47,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:47,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-05 15:34:47,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-05 15:34:47,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:47,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113046544] [2025-02-05 15:34:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113046544] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978788511] [2025-02-05 15:34:48,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:48,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:48,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:48,029 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 15:34:48,032 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 15:34:48,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-05 15:34:48,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-05 15:34:48,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:48,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:48,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:48,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:34:48,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978788511] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:34:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509616395] [2025-02-05 15:34:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:48,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:48,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:48,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:34:48,419 INFO L87 Difference]: Start difference. First operand 588 states and 966 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:48,572 INFO L93 Difference]: Finished difference Result 1184 states and 1960 transitions. [2025-02-05 15:34:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:34:48,573 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2025-02-05 15:34:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:48,578 INFO L225 Difference]: With dead ends: 1184 [2025-02-05 15:34:48,578 INFO L226 Difference]: Without dead ends: 603 [2025-02-05 15:34:48,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 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 15:34:48,581 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 76 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:48,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2720 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-02-05 15:34:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 588. [2025-02-05 15:34:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6608695652173913) internal successors, (764), 481 states have internal predecessors, (764), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 961 transitions. [2025-02-05 15:34:48,605 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 961 transitions. Word has length 108 [2025-02-05 15:34:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:48,606 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 961 transitions. [2025-02-05 15:34:48,606 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 961 transitions. [2025-02-05 15:34:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-05 15:34:48,610 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:48,610 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:48,620 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 15:34:48,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 15:34:48,811 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:48,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1932208812, now seen corresponding path program 1 times [2025-02-05 15:34:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408490792] [2025-02-05 15:34:48,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:48,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 15:34:48,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 15:34:48,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:48,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:49,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:49,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408490792] [2025-02-05 15:34:49,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408490792] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:49,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218575389] [2025-02-05 15:34:49,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:49,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:49,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:49,104 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 15:34:49,107 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 15:34:49,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 15:34:49,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 15:34:49,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:49,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:49,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:49,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:34:49,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218575389] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:49,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:34:49,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330597726] [2025-02-05 15:34:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:49,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:49,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:49,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:34:49,484 INFO L87 Difference]: Start difference. First operand 588 states and 961 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:49,624 INFO L93 Difference]: Finished difference Result 1184 states and 1950 transitions. [2025-02-05 15:34:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:34:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2025-02-05 15:34:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:49,631 INFO L225 Difference]: With dead ends: 1184 [2025-02-05 15:34:49,631 INFO L226 Difference]: Without dead ends: 603 [2025-02-05 15:34:49,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:34:49,634 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 75 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:49,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2720 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-02-05 15:34:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 588. [2025-02-05 15:34:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.65) internal successors, (759), 481 states have internal predecessors, (759), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 956 transitions. [2025-02-05 15:34:49,661 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 956 transitions. Word has length 110 [2025-02-05 15:34:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:49,662 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 956 transitions. [2025-02-05 15:34:49,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 956 transitions. [2025-02-05 15:34:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 15:34:49,666 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:49,666 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:49,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 15:34:49,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:49,867 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:49,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1765997946, now seen corresponding path program 1 times [2025-02-05 15:34:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242597138] [2025-02-05 15:34:49,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:49,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:34:49,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:34:49,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:49,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:50,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:50,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242597138] [2025-02-05 15:34:50,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242597138] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:50,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510573106] [2025-02-05 15:34:50,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:50,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:50,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:50,113 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 15:34:50,115 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 15:34:50,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 15:34:50,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 15:34:50,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:50,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:50,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:50,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:34:50,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510573106] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:50,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:34:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415413593] [2025-02-05 15:34:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:50,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:50,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:50,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:34:50,506 INFO L87 Difference]: Start difference. First operand 588 states and 956 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:50,704 INFO L93 Difference]: Finished difference Result 1235 states and 2023 transitions. [2025-02-05 15:34:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2025-02-05 15:34:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:50,711 INFO L225 Difference]: With dead ends: 1235 [2025-02-05 15:34:50,711 INFO L226 Difference]: Without dead ends: 669 [2025-02-05 15:34:50,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:34:50,717 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 130 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:50,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2751 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:34:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-02-05 15:34:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 639. [2025-02-05 15:34:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 510 states have (on average 1.6549019607843136) internal successors, (844), 531 states have internal predecessors, (844), 101 states have call successors, (101), 28 states have call predecessors, (101), 27 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1041 transitions. [2025-02-05 15:34:50,744 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1041 transitions. Word has length 112 [2025-02-05 15:34:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:50,744 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1041 transitions. [2025-02-05 15:34:50,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1041 transitions. [2025-02-05 15:34:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 15:34:50,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:50,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:50,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 15:34:50,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:50,949 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:50,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash -996929403, now seen corresponding path program 1 times [2025-02-05 15:34:50,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:50,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231530292] [2025-02-05 15:34:50,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:50,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:50,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:50,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:50,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:50,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231530292] [2025-02-05 15:34:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231530292] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698180563] [2025-02-05 15:34:51,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:51,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:51,180 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 15:34:51,182 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 15:34:51,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:51,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:51,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:51,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:51,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:51,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:34:51,590 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698180563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 15:34:51,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708186025] [2025-02-05 15:34:51,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:51,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:51,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:51,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:34:51,593 INFO L87 Difference]: Start difference. First operand 639 states and 1041 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:51,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:51,781 INFO L93 Difference]: Finished difference Result 1250 states and 2047 transitions. [2025-02-05 15:34:51,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:51,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2025-02-05 15:34:51,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:51,788 INFO L225 Difference]: With dead ends: 1250 [2025-02-05 15:34:51,788 INFO L226 Difference]: Without dead ends: 669 [2025-02-05 15:34:51,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:34:51,795 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 124 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:51,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2724 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-02-05 15:34:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 639. [2025-02-05 15:34:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 510 states have (on average 1.6450980392156862) internal successors, (839), 531 states have internal predecessors, (839), 101 states have call successors, (101), 28 states have call predecessors, (101), 27 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-02-05 15:34:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1036 transitions. [2025-02-05 15:34:51,826 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1036 transitions. Word has length 113 [2025-02-05 15:34:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:51,826 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1036 transitions. [2025-02-05 15:34:51,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1036 transitions. [2025-02-05 15:34:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 15:34:51,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:51,830 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:34:51,840 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 15:34:52,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:52,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:52,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:52,034 INFO L85 PathProgramCache]: Analyzing trace with hash 785426817, now seen corresponding path program 1 times [2025-02-05 15:34:52,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:52,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134059301] [2025-02-05 15:34:52,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:52,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:52,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:52,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:52,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134059301] [2025-02-05 15:34:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134059301] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470086087] [2025-02-05 15:34:52,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:52,207 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 15:34:52,209 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 15:34:52,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:52,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:52,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:52,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:52,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:34:52,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:34:52,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470086087] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:52,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:52,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-02-05 15:34:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946499836] [2025-02-05 15:34:52,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:52,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:34:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:52,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:34:52,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:34:52,624 INFO L87 Difference]: Start difference. First operand 639 states and 1036 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:52,782 INFO L93 Difference]: Finished difference Result 1243 states and 2027 transitions. [2025-02-05 15:34:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:34:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2025-02-05 15:34:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:52,790 INFO L225 Difference]: With dead ends: 1243 [2025-02-05 15:34:52,790 INFO L226 Difference]: Without dead ends: 677 [2025-02-05 15:34:52,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:34:52,794 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 113 mSDsluCounter, 5467 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:52,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6393 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-02-05 15:34:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 658. [2025-02-05 15:34:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.644486692015209) internal successors, (865), 549 states have internal predecessors, (865), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2025-02-05 15:34:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1066 transitions. [2025-02-05 15:34:52,820 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1066 transitions. Word has length 113 [2025-02-05 15:34:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:52,820 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1066 transitions. [2025-02-05 15:34:52,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1066 transitions. [2025-02-05 15:34:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 15:34:52,824 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:52,825 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 15:34:52,835 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 15:34:53,025 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,SelfDestructingSolverStorable9 [2025-02-05 15:34:53,026 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:53,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 257061216, now seen corresponding path program 1 times [2025-02-05 15:34:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880133196] [2025-02-05 15:34:53,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:53,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:53,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:53,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:53,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:53,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880133196] [2025-02-05 15:34:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880133196] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828239736] [2025-02-05 15:34:53,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:53,153 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 15:34:53,156 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 15:34:53,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:34:53,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:34:53,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:53,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:53,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:34:53,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:53,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828239736] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:53,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:34:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314787226] [2025-02-05 15:34:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:53,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:34:53,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:53,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:34:53,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:34:53,553 INFO L87 Difference]: Start difference. First operand 658 states and 1066 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:53,652 INFO L93 Difference]: Finished difference Result 1181 states and 1927 transitions. [2025-02-05 15:34:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:34:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2025-02-05 15:34:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:53,658 INFO L225 Difference]: With dead ends: 1181 [2025-02-05 15:34:53,658 INFO L226 Difference]: Without dead ends: 682 [2025-02-05 15:34:53,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 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 15:34:53,662 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 86 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5555 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:53,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5555 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:53,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-02-05 15:34:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 677. [2025-02-05 15:34:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6439114391143912) internal successors, (891), 567 states have internal predecessors, (891), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:34:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1096 transitions. [2025-02-05 15:34:53,687 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1096 transitions. Word has length 113 [2025-02-05 15:34:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:53,688 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1096 transitions. [2025-02-05 15:34:53,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1096 transitions. [2025-02-05 15:34:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:34:53,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:53,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:53,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 15:34:53,892 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,SelfDestructingSolverStorable10 [2025-02-05 15:34:53,893 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:53,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 706176272, now seen corresponding path program 1 times [2025-02-05 15:34:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376397722] [2025-02-05 15:34:53,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:53,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:53,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:53,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:53,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376397722] [2025-02-05 15:34:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376397722] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829621032] [2025-02-05 15:34:53,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:53,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:53,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:53,984 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 15:34:53,988 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 15:34:54,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:54,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:54,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:54,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:54,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:34:54,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:34:54,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:54,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829621032] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:54,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:54,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 15:34:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43603380] [2025-02-05 15:34:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:54,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:34:54,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:54,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:34:54,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:34:54,347 INFO L87 Difference]: Start difference. First operand 677 states and 1096 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:54,399 INFO L93 Difference]: Finished difference Result 1248 states and 2037 transitions. [2025-02-05 15:34:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:34:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2025-02-05 15:34:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:54,405 INFO L225 Difference]: With dead ends: 1248 [2025-02-05 15:34:54,405 INFO L226 Difference]: Without dead ends: 677 [2025-02-05 15:34:54,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:34:54,409 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 13 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:54,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2798 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:34:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-02-05 15:34:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2025-02-05 15:34:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.636531365313653) internal successors, (887), 567 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:34:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1092 transitions. [2025-02-05 15:34:54,456 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1092 transitions. Word has length 114 [2025-02-05 15:34:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:54,457 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1092 transitions. [2025-02-05 15:34:54,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 15:34:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1092 transitions. [2025-02-05 15:34:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:34:54,461 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:54,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:54,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-05 15:34:54,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:54,662 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:54,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 129428492, now seen corresponding path program 1 times [2025-02-05 15:34:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159963656] [2025-02-05 15:34:54,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:54,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:54,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:54,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:54,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:34:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159963656] [2025-02-05 15:34:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159963656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496721326] [2025-02-05 15:34:54,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:54,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:54,765 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 15:34:54,767 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 15:34:54,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:55,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:55,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:55,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:55,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:34:55,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:55,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:55,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496721326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:55,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:55,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-05 15:34:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239516334] [2025-02-05 15:34:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:55,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:34:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:55,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:34:55,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:34:55,198 INFO L87 Difference]: Start difference. First operand 677 states and 1092 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:55,291 INFO L93 Difference]: Finished difference Result 1211 states and 1974 transitions. [2025-02-05 15:34:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:34:55,292 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2025-02-05 15:34:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:55,297 INFO L225 Difference]: With dead ends: 1211 [2025-02-05 15:34:55,297 INFO L226 Difference]: Without dead ends: 712 [2025-02-05 15:34:55,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 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 15:34:55,301 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 95 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:55,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5516 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2025-02-05 15:34:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 677. [2025-02-05 15:34:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.636531365313653) internal successors, (887), 567 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:34:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1092 transitions. [2025-02-05 15:34:55,328 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1092 transitions. Word has length 114 [2025-02-05 15:34:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:55,329 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1092 transitions. [2025-02-05 15:34:55,329 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1092 transitions. [2025-02-05 15:34:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:34:55,332 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:55,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:55,343 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 15:34:55,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:55,533 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:55,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1966865083, now seen corresponding path program 1 times [2025-02-05 15:34:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124108165] [2025-02-05 15:34:55,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:55,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:55,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:55,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:55,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:34:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124108165] [2025-02-05 15:34:55,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124108165] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:55,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662155718] [2025-02-05 15:34:55,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:55,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:55,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:55,619 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 15:34:55,622 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 15:34:55,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:34:55,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:34:55,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:55,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:55,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:34:55,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:56,015 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662155718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:56,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:56,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:34:56,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58443522] [2025-02-05 15:34:56,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:56,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:34:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:56,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:34:56,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:34:56,017 INFO L87 Difference]: Start difference. First operand 677 states and 1092 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:56,167 INFO L93 Difference]: Finished difference Result 1196 states and 1948 transitions. [2025-02-05 15:34:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:34:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2025-02-05 15:34:56,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:56,173 INFO L225 Difference]: With dead ends: 1196 [2025-02-05 15:34:56,173 INFO L226 Difference]: Without dead ends: 697 [2025-02-05 15:34:56,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:34:56,176 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 113 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:56,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6367 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-02-05 15:34:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 677. [2025-02-05 15:34:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.636531365313653) internal successors, (887), 567 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:34:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1092 transitions. [2025-02-05 15:34:56,200 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1092 transitions. Word has length 114 [2025-02-05 15:34:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:56,200 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1092 transitions. [2025-02-05 15:34:56,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1092 transitions. [2025-02-05 15:34:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-02-05 15:34:56,203 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:56,203 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:56,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 15:34:56,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-05 15:34:56,404 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:56,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1164824713, now seen corresponding path program 1 times [2025-02-05 15:34:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689649423] [2025-02-05 15:34:56,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:56,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-05 15:34:56,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-05 15:34:56,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:56,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:34:56,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:56,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689649423] [2025-02-05 15:34:56,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689649423] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:56,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062596733] [2025-02-05 15:34:56,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:56,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:56,547 INFO L229 MonitoredProcess]: Starting monitored process 16 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 15:34:56,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 15:34:56,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-05 15:34:56,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-05 15:34:56,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:56,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:56,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:34:56,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:34:56,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062596733] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:34:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211747586] [2025-02-05 15:34:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:56,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:34:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:56,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:34:56,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:34:56,937 INFO L87 Difference]: Start difference. First operand 677 states and 1092 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:34:57,079 INFO L93 Difference]: Finished difference Result 1196 states and 1949 transitions. [2025-02-05 15:34:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:34:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2025-02-05 15:34:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:34:57,088 INFO L225 Difference]: With dead ends: 1196 [2025-02-05 15:34:57,088 INFO L226 Difference]: Without dead ends: 697 [2025-02-05 15:34:57,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:34:57,093 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 121 mSDsluCounter, 5435 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6357 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:34:57,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6357 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:34:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-02-05 15:34:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 677. [2025-02-05 15:34:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.636531365313653) internal successors, (887), 567 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2025-02-05 15:34:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1092 transitions. [2025-02-05 15:34:57,124 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1092 transitions. Word has length 115 [2025-02-05 15:34:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:34:57,125 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1092 transitions. [2025-02-05 15:34:57,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:34:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1092 transitions. [2025-02-05 15:34:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 15:34:57,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:34:57,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:34:57,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 15:34:57,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 15:34:57,330 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:34:57,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:34:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash -506442388, now seen corresponding path program 1 times [2025-02-05 15:34:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:34:57,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570400485] [2025-02-05 15:34:57,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:34:57,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:34:57,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:34:57,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:57,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 15:34:57,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:34:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570400485] [2025-02-05 15:34:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570400485] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:34:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693925917] [2025-02-05 15:34:57,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:34:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:34:57,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:34:57,425 INFO L229 MonitoredProcess]: Starting monitored process 17 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 15:34:57,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 15:34:57,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:34:57,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:34:57,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:34:57,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:34:57,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:34:57,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:34:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:34:58,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:34:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693925917] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:34:58,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:34:58,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2025-02-05 15:34:58,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072394457] [2025-02-05 15:34:58,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:34:58,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:34:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:34:58,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:34:58,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:34:58,143 INFO L87 Difference]: Start difference. First operand 677 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:35:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:01,180 INFO L93 Difference]: Finished difference Result 2246 states and 3719 transitions. [2025-02-05 15:35:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:01,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2025-02-05 15:35:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:01,192 INFO L225 Difference]: With dead ends: 2246 [2025-02-05 15:35:01,192 INFO L226 Difference]: Without dead ends: 1752 [2025-02-05 15:35:01,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:01,195 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 2875 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 3859 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3056 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 4394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 3859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:01,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3056 Valid, 1728 Invalid, 4394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 3859 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-05 15:35:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2025-02-05 15:35:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1565. [2025-02-05 15:35:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1243 states have (on average 1.66532582461786) internal successors, (2070), 1286 states have internal predecessors, (2070), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2025-02-05 15:35:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2591 transitions. [2025-02-05 15:35:01,270 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2591 transitions. Word has length 116 [2025-02-05 15:35:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:01,271 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2591 transitions. [2025-02-05 15:35:01,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 15:35:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2591 transitions. [2025-02-05 15:35:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-05 15:35:01,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:01,277 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:01,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:01,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:01,477 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:01,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -461786495, now seen corresponding path program 1 times [2025-02-05 15:35:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:01,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719302449] [2025-02-05 15:35:01,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:01,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 15:35:01,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 15:35:01,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:01,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:35:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719302449] [2025-02-05 15:35:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719302449] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230064334] [2025-02-05 15:35:01,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:01,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:01,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:01,618 INFO L229 MonitoredProcess]: Starting monitored process 18 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 15:35:01,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 15:35:01,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 15:35:01,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 15:35:01,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:01,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:01,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:35:01,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 15:35:02,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230064334] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:02,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-05 15:35:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918356273] [2025-02-05 15:35:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:02,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:35:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:02,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:35:02,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:02,148 INFO L87 Difference]: Start difference. First operand 1565 states and 2591 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-02-05 15:35:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:04,798 INFO L93 Difference]: Finished difference Result 4219 states and 7016 transitions. [2025-02-05 15:35:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:35:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2025-02-05 15:35:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:04,819 INFO L225 Difference]: With dead ends: 4219 [2025-02-05 15:35:04,819 INFO L226 Difference]: Without dead ends: 2674 [2025-02-05 15:35:04,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-02-05 15:35:04,828 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 1789 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:04,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 2043 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-05 15:35:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2025-02-05 15:35:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2455. [2025-02-05 15:35:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1926 states have (on average 1.6407061266874352) internal successors, (3160), 1978 states have internal predecessors, (3160), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2025-02-05 15:35:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4043 transitions. [2025-02-05 15:35:04,951 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4043 transitions. Word has length 154 [2025-02-05 15:35:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:04,951 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 4043 transitions. [2025-02-05 15:35:04,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-02-05 15:35:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4043 transitions. [2025-02-05 15:35:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 15:35:04,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:04,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:04,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:05,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 15:35:05,182 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:05,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash -539496504, now seen corresponding path program 1 times [2025-02-05 15:35:05,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:05,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478635409] [2025-02-05 15:35:05,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:05,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:35:05,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:35:05,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:05,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 15:35:05,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:05,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478635409] [2025-02-05 15:35:05,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478635409] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:05,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769294319] [2025-02-05 15:35:05,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:05,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:05,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:05,308 INFO L229 MonitoredProcess]: Starting monitored process 19 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 15:35:05,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 15:35:05,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-02-05 15:35:05,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-02-05 15:35:05,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:05,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:05,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 15:35:05,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:35:05,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769294319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:05,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:05,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 15:35:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758478423] [2025-02-05 15:35:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:05,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:35:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:05,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:35:05,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:05,732 INFO L87 Difference]: Start difference. First operand 2455 states and 4043 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:35:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:05,814 INFO L93 Difference]: Finished difference Result 4741 states and 7853 transitions. [2025-02-05 15:35:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2025-02-05 15:35:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:05,834 INFO L225 Difference]: With dead ends: 4741 [2025-02-05 15:35:05,834 INFO L226 Difference]: Without dead ends: 2470 [2025-02-05 15:35:05,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:05,845 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 0 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:05,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3756 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2025-02-05 15:35:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2464. [2025-02-05 15:35:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1935 states have (on average 1.6377260981912145) internal successors, (3169), 1987 states have internal predecessors, (3169), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2025-02-05 15:35:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4052 transitions. [2025-02-05 15:35:05,958 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4052 transitions. Word has length 155 [2025-02-05 15:35:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:05,960 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 4052 transitions. [2025-02-05 15:35:05,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 15:35:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4052 transitions. [2025-02-05 15:35:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-02-05 15:35:05,966 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:05,966 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:05,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 15:35:06,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 15:35:06,167 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:06,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash -723205161, now seen corresponding path program 1 times [2025-02-05 15:35:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:06,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952136489] [2025-02-05 15:35:06,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:06,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:06,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:35:06,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:35:06,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:06,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 15:35:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952136489] [2025-02-05 15:35:06,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952136489] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943175383] [2025-02-05 15:35:06,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:06,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:06,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:06,296 INFO L229 MonitoredProcess]: Starting monitored process 20 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 15:35:06,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 15:35:06,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-05 15:35:06,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-05 15:35:06,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:06,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:06,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:35:06,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:35:06,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943175383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:06,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:06,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-05 15:35:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444785568] [2025-02-05 15:35:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:06,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:06,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:06,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:06,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:06,677 INFO L87 Difference]: Start difference. First operand 2464 states and 4052 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:06,766 INFO L93 Difference]: Finished difference Result 4902 states and 8074 transitions. [2025-02-05 15:35:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2025-02-05 15:35:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:06,783 INFO L225 Difference]: With dead ends: 4902 [2025-02-05 15:35:06,783 INFO L226 Difference]: Without dead ends: 2439 [2025-02-05 15:35:06,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:35:06,793 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 7 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:06,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2801 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2025-02-05 15:35:06,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2439. [2025-02-05 15:35:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 1913 states have (on average 1.6366962885520124) internal successors, (3131), 1963 states have internal predecessors, (3131), 419 states have call successors, (419), 89 states have call predecessors, (419), 106 states have return successors, (460), 397 states have call predecessors, (460), 414 states have call successors, (460) [2025-02-05 15:35:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4010 transitions. [2025-02-05 15:35:06,903 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4010 transitions. Word has length 158 [2025-02-05 15:35:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 2439 states and 4010 transitions. [2025-02-05 15:35:06,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4010 transitions. [2025-02-05 15:35:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-05 15:35:06,913 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:06,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:06,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 15:35:07,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:07,114 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:07,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1680722394, now seen corresponding path program 1 times [2025-02-05 15:35:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249625994] [2025-02-05 15:35:07,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:07,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 15:35:07,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 15:35:07,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:07,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:07,339 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 15:35:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249625994] [2025-02-05 15:35:07,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249625994] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113490415] [2025-02-05 15:35:07,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:07,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:07,343 INFO L229 MonitoredProcess]: Starting monitored process 21 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 15:35:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 15:35:07,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 15:35:07,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 15:35:07,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:07,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:07,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 15:35:07,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:35:07,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:07,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113490415] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:07,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:07,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-02-05 15:35:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531758035] [2025-02-05 15:35:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:07,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:07,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:07,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:07,788 INFO L87 Difference]: Start difference. First operand 2439 states and 4010 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:07,889 INFO L93 Difference]: Finished difference Result 4832 states and 7967 transitions. [2025-02-05 15:35:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:35:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2025-02-05 15:35:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:07,905 INFO L225 Difference]: With dead ends: 4832 [2025-02-05 15:35:07,906 INFO L226 Difference]: Without dead ends: 2457 [2025-02-05 15:35:07,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:07,916 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 7 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:07,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2771 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2025-02-05 15:35:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2025-02-05 15:35:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1931 states have (on average 1.6317969963749352) internal successors, (3151), 1981 states have internal predecessors, (3151), 419 states have call successors, (419), 89 states have call predecessors, (419), 106 states have return successors, (460), 397 states have call predecessors, (460), 414 states have call successors, (460) [2025-02-05 15:35:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 4030 transitions. [2025-02-05 15:35:08,030 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 4030 transitions. Word has length 159 [2025-02-05 15:35:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:08,030 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 4030 transitions. [2025-02-05 15:35:08,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 4030 transitions. [2025-02-05 15:35:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-05 15:35:08,037 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:08,037 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:08,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 15:35:08,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:08,238 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:08,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1104940446, now seen corresponding path program 1 times [2025-02-05 15:35:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79634025] [2025-02-05 15:35:08,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:08,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:35:08,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:35:08,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:08,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:08,422 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 15:35:08,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79634025] [2025-02-05 15:35:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79634025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844319472] [2025-02-05 15:35:08,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:08,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:08,424 INFO L229 MonitoredProcess]: Starting monitored process 22 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 15:35:08,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 15:35:08,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-05 15:35:08,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 15:35:08,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:08,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:08,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 15:35:08,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:35:08,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844319472] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:08,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-02-05 15:35:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030052502] [2025-02-05 15:35:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:08,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:35:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:08,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:35:08,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:08,807 INFO L87 Difference]: Start difference. First operand 2457 states and 4030 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:08,928 INFO L93 Difference]: Finished difference Result 4883 states and 8024 transitions. [2025-02-05 15:35:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2025-02-05 15:35:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:08,949 INFO L225 Difference]: With dead ends: 4883 [2025-02-05 15:35:08,949 INFO L226 Difference]: Without dead ends: 2457 [2025-02-05 15:35:08,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:35:08,961 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 119 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5598 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:08,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5598 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2025-02-05 15:35:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2436. [2025-02-05 15:35:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 1910 states have (on average 1.631937172774869) internal successors, (3117), 1960 states have internal predecessors, (3117), 419 states have call successors, (419), 89 states have call predecessors, (419), 106 states have return successors, (460), 397 states have call predecessors, (460), 414 states have call successors, (460) [2025-02-05 15:35:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3996 transitions. [2025-02-05 15:35:09,057 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3996 transitions. Word has length 160 [2025-02-05 15:35:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:09,058 INFO L471 AbstractCegarLoop]: Abstraction has 2436 states and 3996 transitions. [2025-02-05 15:35:09,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3996 transitions. [2025-02-05 15:35:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-05 15:35:09,062 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:09,063 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:09,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-05 15:35:09,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-05 15:35:09,264 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:09,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1830686162, now seen corresponding path program 1 times [2025-02-05 15:35:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879921828] [2025-02-05 15:35:09,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:09,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:35:09,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:35:09,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:09,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:35:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879921828] [2025-02-05 15:35:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879921828] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:35:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748001962] [2025-02-05 15:35:09,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:09,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:35:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:35:09,431 INFO L229 MonitoredProcess]: Starting monitored process 23 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 15:35:09,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-05 15:35:09,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 15:35:09,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 15:35:09,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:09,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:09,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:35:09,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:35:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:35:09,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:35:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748001962] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:35:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 15:35:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124272672] [2025-02-05 15:35:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:09,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:09,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:09,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:35:09,863 INFO L87 Difference]: Start difference. First operand 2436 states and 3996 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:09,996 INFO L93 Difference]: Finished difference Result 4865 states and 7994 transitions. [2025-02-05 15:35:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2025-02-05 15:35:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,015 INFO L225 Difference]: With dead ends: 4865 [2025-02-05 15:35:10,015 INFO L226 Difference]: Without dead ends: 2460 [2025-02-05 15:35:10,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:35:10,024 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 128 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:10,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2680 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2025-02-05 15:35:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2436. [2025-02-05 15:35:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 1910 states have (on average 1.631413612565445) internal successors, (3116), 1960 states have internal predecessors, (3116), 419 states have call successors, (419), 89 states have call predecessors, (419), 106 states have return successors, (460), 397 states have call predecessors, (460), 414 states have call successors, (460) [2025-02-05 15:35:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3995 transitions. [2025-02-05 15:35:10,116 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3995 transitions. Word has length 162 [2025-02-05 15:35:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:10,116 INFO L471 AbstractCegarLoop]: Abstraction has 2436 states and 3995 transitions. [2025-02-05 15:35:10,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3995 transitions. [2025-02-05 15:35:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-05 15:35:10,121 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:10,121 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:10,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-05 15:35:10,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-05 15:35:10,323 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:10,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1698823423, now seen corresponding path program 1 times [2025-02-05 15:35:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480243856] [2025-02-05 15:35:10,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:10,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-05 15:35:10,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-05 15:35:10,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:10,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 15:35:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:10,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480243856] [2025-02-05 15:35:10,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480243856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:10,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:10,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:35:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348460137] [2025-02-05 15:35:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:10,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:35:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:10,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:35:10,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:35:10,436 INFO L87 Difference]: Start difference. First operand 2436 states and 3995 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:10,519 INFO L93 Difference]: Finished difference Result 4800 states and 7903 transitions. [2025-02-05 15:35:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:35:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2025-02-05 15:35:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,538 INFO L225 Difference]: With dead ends: 4800 [2025-02-05 15:35:10,538 INFO L226 Difference]: Without dead ends: 2396 [2025-02-05 15:35:10,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:35:10,548 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 8 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:10,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2798 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:10,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2025-02-05 15:35:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2396. [2025-02-05 15:35:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1873 states have (on average 1.630005339028297) internal successors, (3053), 1921 states have internal predecessors, (3053), 418 states have call successors, (418), 89 states have call predecessors, (418), 104 states have return successors, (457), 396 states have call predecessors, (457), 413 states have call successors, (457) [2025-02-05 15:35:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3928 transitions. [2025-02-05 15:35:10,674 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3928 transitions. Word has length 163 [2025-02-05 15:35:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:10,674 INFO L471 AbstractCegarLoop]: Abstraction has 2396 states and 3928 transitions. [2025-02-05 15:35:10,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 15:35:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3928 transitions. [2025-02-05 15:35:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 15:35:10,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:10,679 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:10,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-05 15:35:10,680 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:10,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -765015417, now seen corresponding path program 1 times [2025-02-05 15:35:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704767977] [2025-02-05 15:35:10,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:10,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 15:35:10,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 15:35:10,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:10,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 15:35:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704767977] [2025-02-05 15:35:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704767977] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:10,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:35:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852800816] [2025-02-05 15:35:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:10,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:35:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:10,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:35:10,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:35:10,860 INFO L87 Difference]: Start difference. First operand 2396 states and 3928 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:10,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:10,968 INFO L93 Difference]: Finished difference Result 4703 states and 7742 transitions. [2025-02-05 15:35:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:10,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2025-02-05 15:35:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:10,986 INFO L225 Difference]: With dead ends: 4703 [2025-02-05 15:35:10,986 INFO L226 Difference]: Without dead ends: 2382 [2025-02-05 15:35:10,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:35:10,993 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 88 mSDsluCounter, 4507 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:10,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5424 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:35:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2025-02-05 15:35:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2025-02-05 15:35:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1859 states have (on average 1.6288327057557828) internal successors, (3028), 1907 states have internal predecessors, (3028), 418 states have call successors, (418), 89 states have call predecessors, (418), 104 states have return successors, (457), 396 states have call predecessors, (457), 413 states have call successors, (457) [2025-02-05 15:35:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3903 transitions. [2025-02-05 15:35:11,075 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3903 transitions. Word has length 164 [2025-02-05 15:35:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:11,076 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 3903 transitions. [2025-02-05 15:35:11,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3903 transitions. [2025-02-05 15:35:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 15:35:11,081 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:11,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:11,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-05 15:35:11,082 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:11,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1944370120, now seen corresponding path program 1 times [2025-02-05 15:35:11,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409641884] [2025-02-05 15:35:11,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:11,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 15:35:11,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 15:35:11,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:11,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:35:11,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409641884] [2025-02-05 15:35:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409641884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:11,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:11,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-05 15:35:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141107139] [2025-02-05 15:35:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:11,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:35:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:11,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:35:11,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:11,477 INFO L87 Difference]: Start difference. First operand 2382 states and 3903 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:11,684 INFO L93 Difference]: Finished difference Result 4730 states and 7770 transitions. [2025-02-05 15:35:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:35:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 165 [2025-02-05 15:35:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:11,706 INFO L225 Difference]: With dead ends: 4730 [2025-02-05 15:35:11,707 INFO L226 Difference]: Without dead ends: 2373 [2025-02-05 15:35:11,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:35:11,714 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 45 mSDsluCounter, 6096 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:11,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6973 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:35:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2025-02-05 15:35:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2373. [2025-02-05 15:35:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 1850 states have (on average 1.6286486486486487) internal successors, (3013), 1898 states have internal predecessors, (3013), 418 states have call successors, (418), 89 states have call predecessors, (418), 104 states have return successors, (457), 396 states have call predecessors, (457), 413 states have call successors, (457) [2025-02-05 15:35:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3888 transitions. [2025-02-05 15:35:11,794 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3888 transitions. Word has length 165 [2025-02-05 15:35:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:11,794 INFO L471 AbstractCegarLoop]: Abstraction has 2373 states and 3888 transitions. [2025-02-05 15:35:11,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-02-05 15:35:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3888 transitions. [2025-02-05 15:35:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 15:35:11,799 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:11,799 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:11,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-05 15:35:11,799 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:11,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash -872523517, now seen corresponding path program 1 times [2025-02-05 15:35:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36464243] [2025-02-05 15:35:11,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:11,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 15:35:11,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 15:35:11,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:11,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:35:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:11,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36464243] [2025-02-05 15:35:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36464243] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:11,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:11,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904857012] [2025-02-05 15:35:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:11,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:11,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:12,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:12,000 INFO L87 Difference]: Start difference. First operand 2373 states and 3888 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:14,505 INFO L93 Difference]: Finished difference Result 6700 states and 11202 transitions. [2025-02-05 15:35:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2025-02-05 15:35:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:14,539 INFO L225 Difference]: With dead ends: 6700 [2025-02-05 15:35:14,539 INFO L226 Difference]: Without dead ends: 4420 [2025-02-05 15:35:14,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:14,553 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 3457 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 1079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3493 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1079 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:14,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3493 Valid, 2148 Invalid, 4648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1079 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-05 15:35:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2025-02-05 15:35:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4099. [2025-02-05 15:35:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 3148 states have (on average 1.6181702668360864) internal successors, (5094), 3246 states have internal predecessors, (5094), 771 states have call successors, (771), 142 states have call predecessors, (771), 179 states have return successors, (879), 748 states have call predecessors, (879), 766 states have call successors, (879) [2025-02-05 15:35:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6744 transitions. [2025-02-05 15:35:14,775 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6744 transitions. Word has length 166 [2025-02-05 15:35:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:14,775 INFO L471 AbstractCegarLoop]: Abstraction has 4099 states and 6744 transitions. [2025-02-05 15:35:14,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6744 transitions. [2025-02-05 15:35:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 15:35:14,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:14,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:14,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-05 15:35:14,782 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:14,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1880102651, now seen corresponding path program 1 times [2025-02-05 15:35:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:14,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652767584] [2025-02-05 15:35:14,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:14,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 15:35:14,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 15:35:14,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:14,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:35:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652767584] [2025-02-05 15:35:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652767584] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:14,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:14,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657361387] [2025-02-05 15:35:14,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:14,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:14,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:14,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:14,982 INFO L87 Difference]: Start difference. First operand 4099 states and 6744 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:17,487 INFO L93 Difference]: Finished difference Result 12990 states and 21875 transitions. [2025-02-05 15:35:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 167 [2025-02-05 15:35:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:17,553 INFO L225 Difference]: With dead ends: 12990 [2025-02-05 15:35:17,554 INFO L226 Difference]: Without dead ends: 8985 [2025-02-05 15:35:17,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:17,620 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 3470 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 1098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 4638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1098 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:17,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3507 Valid, 2161 Invalid, 4638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1098 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-05 15:35:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2025-02-05 15:35:18,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 8310. [2025-02-05 15:35:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8310 states, 6235 states have (on average 1.6075380914194066) internal successors, (10023), 6465 states have internal predecessors, (10023), 1722 states have call successors, (1722), 248 states have call predecessors, (1722), 352 states have return successors, (2076), 1717 states have call predecessors, (2076), 1717 states have call successors, (2076) [2025-02-05 15:35:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8310 states to 8310 states and 13821 transitions. [2025-02-05 15:35:18,162 INFO L78 Accepts]: Start accepts. Automaton has 8310 states and 13821 transitions. Word has length 167 [2025-02-05 15:35:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:18,164 INFO L471 AbstractCegarLoop]: Abstraction has 8310 states and 13821 transitions. [2025-02-05 15:35:18,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8310 states and 13821 transitions. [2025-02-05 15:35:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 15:35:18,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:18,170 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:18,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-05 15:35:18,170 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:18,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1171122968, now seen corresponding path program 1 times [2025-02-05 15:35:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925120563] [2025-02-05 15:35:18,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:18,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 15:35:18,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 15:35:18,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:18,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:35:18,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925120563] [2025-02-05 15:35:18,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925120563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:18,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:18,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616976312] [2025-02-05 15:35:18,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:18,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:18,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:18,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:18,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:18,372 INFO L87 Difference]: Start difference. First operand 8310 states and 13821 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:21,643 INFO L93 Difference]: Finished difference Result 29495 states and 50442 transitions. [2025-02-05 15:35:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2025-02-05 15:35:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:21,770 INFO L225 Difference]: With dead ends: 29495 [2025-02-05 15:35:21,770 INFO L226 Difference]: Without dead ends: 21281 [2025-02-05 15:35:21,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:21,815 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 3482 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 4647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:21,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3520 Valid, 2182 Invalid, 4647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-05 15:35:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21281 states. [2025-02-05 15:35:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21281 to 19467. [2025-02-05 15:35:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19467 states, 14183 states have (on average 1.5971938235916239) internal successors, (22653), 14786 states have internal predecessors, (22653), 4503 states have call successors, (4503), 460 states have call predecessors, (4503), 780 states have return successors, (5805), 4610 states have call predecessors, (5805), 4498 states have call successors, (5805) [2025-02-05 15:35:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19467 states to 19467 states and 32961 transitions. [2025-02-05 15:35:23,462 INFO L78 Accepts]: Start accepts. Automaton has 19467 states and 32961 transitions. Word has length 168 [2025-02-05 15:35:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:23,463 INFO L471 AbstractCegarLoop]: Abstraction has 19467 states and 32961 transitions. [2025-02-05 15:35:23,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 19467 states and 32961 transitions. [2025-02-05 15:35:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-05 15:35:23,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:23,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:23,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-05 15:35:23,470 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:23,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash 541839744, now seen corresponding path program 1 times [2025-02-05 15:35:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176078743] [2025-02-05 15:35:23,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:23,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-05 15:35:23,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-05 15:35:23,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:23,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:35:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176078743] [2025-02-05 15:35:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176078743] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:23,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241726522] [2025-02-05 15:35:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:23,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:23,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:23,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:23,675 INFO L87 Difference]: Start difference. First operand 19467 states and 32961 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:29,070 INFO L93 Difference]: Finished difference Result 76812 states and 134178 transitions. [2025-02-05 15:35:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2025-02-05 15:35:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:29,578 INFO L225 Difference]: With dead ends: 76812 [2025-02-05 15:35:29,578 INFO L226 Difference]: Without dead ends: 57445 [2025-02-05 15:35:29,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:29,807 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 3494 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 4658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:29,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 2203 Invalid, 4658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3554 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-05 15:35:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57445 states. [2025-02-05 15:35:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57445 to 51960. [2025-02-05 15:35:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51960 states, 36759 states have (on average 1.5888081830300063) internal successors, (58403), 38479 states have internal predecessors, (58403), 13256 states have call successors, (13256), 884 states have call predecessors, (13256), 1944 states have return successors, (18344), 13883 states have call predecessors, (18344), 13251 states have call successors, (18344) [2025-02-05 15:35:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51960 states to 51960 states and 90003 transitions. [2025-02-05 15:35:33,782 INFO L78 Accepts]: Start accepts. Automaton has 51960 states and 90003 transitions. Word has length 169 [2025-02-05 15:35:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:35:33,783 INFO L471 AbstractCegarLoop]: Abstraction has 51960 states and 90003 transitions. [2025-02-05 15:35:33,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 51960 states and 90003 transitions. [2025-02-05 15:35:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 15:35:33,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:35:33,792 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:33,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-05 15:35:33,792 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:35:33,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:35:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash -379214643, now seen corresponding path program 1 times [2025-02-05 15:35:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:35:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102576621] [2025-02-05 15:35:33,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:35:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:35:33,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:35:33,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:35:33,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:35:33,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:35:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:35:33,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:35:33,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102576621] [2025-02-05 15:35:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102576621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:35:33,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:35:33,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:35:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733232896] [2025-02-05 15:35:33,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:35:33,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:35:33,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:35:33,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:35:33,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:35:33,996 INFO L87 Difference]: Start difference. First operand 51960 states and 90003 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-05 15:35:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:35:46,869 INFO L93 Difference]: Finished difference Result 224581 states and 401172 transitions. [2025-02-05 15:35:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:35:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2025-02-05 15:35:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:35:48,523 INFO L225 Difference]: With dead ends: 224581 [2025-02-05 15:35:48,524 INFO L226 Difference]: Without dead ends: 172729 [2025-02-05 15:35:48,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:35:48,790 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 3506 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-05 15:35:48,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 2224 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 3563 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-05 15:35:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172729 states.