./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:17:27,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:17:27,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:17:27,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:17:27,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:17:27,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:17:27,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:17:27,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:17:27,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:17:27,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:17:27,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:17:27,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:17:27,476 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:17:27,478 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:17:27,478 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:17:27,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:17:27,479 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2025-03-03 14:17:27,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:17:27,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:17:27,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:17:27,722 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:17:27,723 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:17:27,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2025-03-03 14:17:28,876 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d2005f3/f1743520d25e45d6b28693c0cbd36309/FLAG20cd593c0 [2025-03-03 14:17:29,172 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:17:29,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2025-03-03 14:17:29,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d2005f3/f1743520d25e45d6b28693c0cbd36309/FLAG20cd593c0 [2025-03-03 14:17:29,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d2005f3/f1743520d25e45d6b28693c0cbd36309 [2025-03-03 14:17:29,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:17:29,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:17:29,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:17:29,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:17:29,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:17:29,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35249644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29, skipping insertion in model container [2025-03-03 14:17:29,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:17:29,377 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2025-03-03 14:17:29,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:17:29,583 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:17:29,589 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-03 14:17:29,590 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [67] [2025-03-03 14:17:29,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [259] [2025-03-03 14:17:29,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [268] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [366] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1033] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1399] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2844] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3195] [2025-03-03 14:17:29,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3313] [2025-03-03 14:17:29,603 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2025-03-03 14:17:29,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:17:29,703 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:17:29,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29 WrapperNode [2025-03-03 14:17:29,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:17:29,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:17:29,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:17:29,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:17:29,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,753 INFO L138 Inliner]: procedures = 88, calls = 338, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 794 [2025-03-03 14:17:29,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:17:29,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:17:29,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:17:29,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:17:29,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,787 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:17:29,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,811 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:17:29,837 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:17:29,839 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:17:29,839 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:17:29,840 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (1/1) ... [2025-03-03 14:17:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:17:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:29,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:17:29,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:17:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:17:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:17:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:17:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:17:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:17:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:17:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:17:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:17:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:17:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:17:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:17:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:17:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:17:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:17:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-03 14:17:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-03 14:17:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:17:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:17:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:17:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:17:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:17:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:17:30,026 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:17:30,031 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:17:30,070 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1679: #res := ~retValue_acc~10; [2025-03-03 14:17:30,090 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3310: #res := ~retValue_acc~23; [2025-03-03 14:17:30,104 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3232: #res := ~retValue_acc~21; [2025-03-03 14:17:30,106 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1474: #res := ~retValue_acc~6; [2025-03-03 14:17:30,405 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2164: #res := ~retValue_acc~14; [2025-03-03 14:17:30,460 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2268: #res := ~retValue_acc~17; [2025-03-03 14:17:30,471 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3271: #res := ~retValue_acc~22; [2025-03-03 14:17:30,491 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1670: #res := ~retValue_acc~9; [2025-03-03 14:17:30,660 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2254-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~16#1; [2025-03-03 14:17:30,660 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1627-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~7#1; [2025-03-03 14:17:30,728 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1799-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~12#1; [2025-03-03 14:17:30,728 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1812-1: isIdle_#res#1 := isIdle_~retValue_acc~13#1; [2025-03-03 14:17:30,769 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L719: #res := ~retValue_acc~1; [2025-03-03 14:17:30,820 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3192-1: main_#res#1 := main_~retValue_acc~20#1; [2025-03-03 14:17:30,820 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3345-1: valid_product_#res#1 := valid_product_~retValue_acc~25#1; [2025-03-03 14:17:30,830 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L483: #res := ~retValue_acc~0; [2025-03-03 14:17:30,834 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1030: #res := ~retValue_acc~2; [2025-03-03 14:17:30,973 INFO L? ?]: Removed 435 outVars from TransFormulas that were not future-live. [2025-03-03 14:17:30,973 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:17:30,996 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:17:30,997 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:17:30,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:17:30 BoogieIcfgContainer [2025-03-03 14:17:30,997 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:17:31,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:17:31,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:17:31,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:17:31,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:17:29" (1/3) ... [2025-03-03 14:17:31,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd8e860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:17:31, skipping insertion in model container [2025-03-03 14:17:31,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:29" (2/3) ... [2025-03-03 14:17:31,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd8e860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:17:31, skipping insertion in model container [2025-03-03 14:17:31,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:17:30" (3/3) ... [2025-03-03 14:17:31,006 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2025-03-03 14:17:31,016 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:17:31,019 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product17.cil.c that has 25 procedures, 560 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:17:31,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:17:31,084 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;@565db840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:17:31,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:17:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 434 states have (on average 1.6866359447004609) internal successors, (732), 452 states have internal predecessors, (732), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:17:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-03 14:17:31,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:31,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:31,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:31,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1009900486, now seen corresponding path program 1 times [2025-03-03 14:17:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:31,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769680710] [2025-03-03 14:17:31,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:31,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-03 14:17:31,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-03 14:17:31,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:31,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769680710] [2025-03-03 14:17:31,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769680710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:31,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:31,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680861808] [2025-03-03 14:17:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:31,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:31,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:31,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:31,760 INFO L87 Difference]: Start difference. First operand has 560 states, 434 states have (on average 1.6866359447004609) internal successors, (732), 452 states have internal predecessors, (732), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:31,968 INFO L93 Difference]: Finished difference Result 1117 states and 1876 transitions. [2025-03-03 14:17:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:31,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2025-03-03 14:17:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:31,989 INFO L225 Difference]: With dead ends: 1117 [2025-03-03 14:17:31,989 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:17:31,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:17:32,003 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 91 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5422 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:32,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5422 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:17:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:17:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2025-03-03 14:17:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 455 states have internal predecessors, (734), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2025-03-03 14:17:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 935 transitions. [2025-03-03 14:17:32,108 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 935 transitions. Word has length 85 [2025-03-03 14:17:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:32,109 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 935 transitions. [2025-03-03 14:17:32,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 935 transitions. [2025-03-03 14:17:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-03 14:17:32,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:32,115 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:32,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:17:32,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:32,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1723430187, now seen corresponding path program 1 times [2025-03-03 14:17:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919454255] [2025-03-03 14:17:32,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:32,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-03 14:17:32,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-03 14:17:32,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:32,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:32,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:32,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919454255] [2025-03-03 14:17:32,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919454255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:32,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:32,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610842095] [2025-03-03 14:17:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:32,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:32,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:32,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:32,281 INFO L87 Difference]: Start difference. First operand 563 states and 935 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:32,340 INFO L93 Difference]: Finished difference Result 1108 states and 1851 transitions. [2025-03-03 14:17:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2025-03-03 14:17:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:32,344 INFO L225 Difference]: With dead ends: 1108 [2025-03-03 14:17:32,344 INFO L226 Difference]: Without dead ends: 539 [2025-03-03 14:17:32,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:32,347 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 14 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:32,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2710 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-03 14:17:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2025-03-03 14:17:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.6706730769230769) internal successors, (695), 432 states have internal predecessors, (695), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 892 transitions. [2025-03-03 14:17:32,390 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 892 transitions. Word has length 86 [2025-03-03 14:17:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:32,391 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 892 transitions. [2025-03-03 14:17:32,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 892 transitions. [2025-03-03 14:17:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-03 14:17:32,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:32,394 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:32,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:17:32,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:32,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1759790631, now seen corresponding path program 1 times [2025-03-03 14:17:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:32,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296837382] [2025-03-03 14:17:32,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:32,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-03 14:17:32,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-03 14:17:32,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:32,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296837382] [2025-03-03 14:17:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296837382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111668944] [2025-03-03 14:17:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:32,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:32,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:32,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:32,652 INFO L87 Difference]: Start difference. First operand 539 states and 892 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:32,728 INFO L93 Difference]: Finished difference Result 1071 states and 1783 transitions. [2025-03-03 14:17:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2025-03-03 14:17:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:32,732 INFO L225 Difference]: With dead ends: 1071 [2025-03-03 14:17:32,732 INFO L226 Difference]: Without dead ends: 533 [2025-03-03 14:17:32,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:17:32,735 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 77 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:32,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5216 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-03 14:17:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-03-03 14:17:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 410 states have (on average 1.6634146341463414) internal successors, (682), 426 states have internal predecessors, (682), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 879 transitions. [2025-03-03 14:17:32,761 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 879 transitions. Word has length 86 [2025-03-03 14:17:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:32,761 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 879 transitions. [2025-03-03 14:17:32,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 879 transitions. [2025-03-03 14:17:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:17:32,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:32,764 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:32,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:17:32,764 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:32,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1580117516, now seen corresponding path program 1 times [2025-03-03 14:17:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:32,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109934223] [2025-03-03 14:17:32,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:32,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:17:32,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:17:32,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:32,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:32,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:32,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109934223] [2025-03-03 14:17:32,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109934223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:32,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:32,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357758170] [2025-03-03 14:17:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:32,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:32,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:32,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:32,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:32,993 INFO L87 Difference]: Start difference. First operand 533 states and 879 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:33,061 INFO L93 Difference]: Finished difference Result 1059 states and 1757 transitions. [2025-03-03 14:17:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2025-03-03 14:17:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:33,064 INFO L225 Difference]: With dead ends: 1059 [2025-03-03 14:17:33,065 INFO L226 Difference]: Without dead ends: 527 [2025-03-03 14:17:33,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:17:33,067 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 63 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5156 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:33,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5156 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-03 14:17:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2025-03-03 14:17:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 404 states have (on average 1.6559405940594059) internal successors, (669), 420 states have internal predecessors, (669), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 866 transitions. [2025-03-03 14:17:33,087 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 866 transitions. Word has length 87 [2025-03-03 14:17:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:33,087 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 866 transitions. [2025-03-03 14:17:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 866 transitions. [2025-03-03 14:17:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:17:33,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:33,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:33,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:17:33,089 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:33,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1646212883, now seen corresponding path program 1 times [2025-03-03 14:17:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824172035] [2025-03-03 14:17:33,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:33,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:17:33,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:17:33,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:33,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:33,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824172035] [2025-03-03 14:17:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824172035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:33,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227022058] [2025-03-03 14:17:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:33,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:33,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:33,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:33,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:33,226 INFO L87 Difference]: Start difference. First operand 527 states and 866 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:33,290 INFO L93 Difference]: Finished difference Result 1047 states and 1731 transitions. [2025-03-03 14:17:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2025-03-03 14:17:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:33,295 INFO L225 Difference]: With dead ends: 1047 [2025-03-03 14:17:33,295 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:33,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:17:33,299 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 49 mSDsluCounter, 4239 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:33,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5096 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6482412060301508) internal successors, (656), 414 states have internal predecessors, (656), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 853 transitions. [2025-03-03 14:17:33,320 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 853 transitions. Word has length 88 [2025-03-03 14:17:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:33,321 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 853 transitions. [2025-03-03 14:17:33,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 853 transitions. [2025-03-03 14:17:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:17:33,323 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:33,323 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:33,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:17:33,323 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:33,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 165937483, now seen corresponding path program 1 times [2025-03-03 14:17:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946720379] [2025-03-03 14:17:33,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:33,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:17:33,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:17:33,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:33,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:33,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946720379] [2025-03-03 14:17:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946720379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:33,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579262798] [2025-03-03 14:17:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:33,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:33,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:33,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:33,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:33,475 INFO L87 Difference]: Start difference. First operand 521 states and 853 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:33,540 INFO L93 Difference]: Finished difference Result 1035 states and 1705 transitions. [2025-03-03 14:17:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2025-03-03 14:17:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:33,543 INFO L225 Difference]: With dead ends: 1035 [2025-03-03 14:17:33,543 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:33,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:17:33,546 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 24 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:33,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5048 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6457286432160805) internal successors, (655), 414 states have internal predecessors, (655), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 852 transitions. [2025-03-03 14:17:33,563 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 852 transitions. Word has length 88 [2025-03-03 14:17:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:33,564 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 852 transitions. [2025-03-03 14:17:33,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 852 transitions. [2025-03-03 14:17:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-03 14:17:33,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:33,566 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:33,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:17:33,566 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:33,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash 534671278, now seen corresponding path program 1 times [2025-03-03 14:17:33,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317428664] [2025-03-03 14:17:33,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:33,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:33,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-03 14:17:33,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-03 14:17:33,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:33,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317428664] [2025-03-03 14:17:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317428664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:33,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964964470] [2025-03-03 14:17:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:33,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:33,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:33,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:33,664 INFO L87 Difference]: Start difference. First operand 521 states and 852 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:33,704 INFO L93 Difference]: Finished difference Result 1026 states and 1690 transitions. [2025-03-03 14:17:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2025-03-03 14:17:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:33,707 INFO L225 Difference]: With dead ends: 1026 [2025-03-03 14:17:33,707 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:33,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:33,712 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 15 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:33,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2496 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.64321608040201) internal successors, (654), 414 states have internal predecessors, (654), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 851 transitions. [2025-03-03 14:17:33,728 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 851 transitions. Word has length 89 [2025-03-03 14:17:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:33,728 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 851 transitions. [2025-03-03 14:17:33,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 851 transitions. [2025-03-03 14:17:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 14:17:33,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:33,730 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:33,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:17:33,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:33,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 890264059, now seen corresponding path program 1 times [2025-03-03 14:17:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028255729] [2025-03-03 14:17:33,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:33,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:33,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 14:17:33,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 14:17:33,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:33,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028255729] [2025-03-03 14:17:33,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028255729] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:33,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:33,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162881447] [2025-03-03 14:17:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:33,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:33,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:33,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:33,818 INFO L87 Difference]: Start difference. First operand 521 states and 851 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:33,852 INFO L93 Difference]: Finished difference Result 1026 states and 1688 transitions. [2025-03-03 14:17:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2025-03-03 14:17:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:33,856 INFO L225 Difference]: With dead ends: 1026 [2025-03-03 14:17:33,856 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:33,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:33,859 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 14 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:33,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2498 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6407035175879396) internal successors, (653), 414 states have internal predecessors, (653), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 850 transitions. [2025-03-03 14:17:33,874 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 850 transitions. Word has length 90 [2025-03-03 14:17:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:33,875 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 850 transitions. [2025-03-03 14:17:33,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 850 transitions. [2025-03-03 14:17:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 14:17:33,876 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:33,876 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:33,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:17:33,877 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:33,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash -774532079, now seen corresponding path program 1 times [2025-03-03 14:17:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:33,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307676581] [2025-03-03 14:17:33,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:33,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:33,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 14:17:33,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 14:17:33,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:33,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:33,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307676581] [2025-03-03 14:17:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307676581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:33,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:33,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:33,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218389596] [2025-03-03 14:17:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:33,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:33,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:33,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:33,989 INFO L87 Difference]: Start difference. First operand 521 states and 850 transitions. 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:34,032 INFO L93 Difference]: Finished difference Result 1026 states and 1686 transitions. [2025-03-03 14:17:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:34,032 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2025-03-03 14:17:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:34,035 INFO L225 Difference]: With dead ends: 1026 [2025-03-03 14:17:34,036 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:34,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:34,041 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 13 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:34,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6381909547738693) internal successors, (652), 414 states have internal predecessors, (652), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 849 transitions. [2025-03-03 14:17:34,060 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 849 transitions. Word has length 91 [2025-03-03 14:17:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:34,060 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 849 transitions. [2025-03-03 14:17:34,061 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 849 transitions. [2025-03-03 14:17:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 14:17:34,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:34,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:34,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:17:34,062 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:34,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -646875266, now seen corresponding path program 1 times [2025-03-03 14:17:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773008905] [2025-03-03 14:17:34,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:34,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:34,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 14:17:34,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 14:17:34,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:34,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773008905] [2025-03-03 14:17:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773008905] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061252059] [2025-03-03 14:17:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:34,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:34,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:34,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:34,162 INFO L87 Difference]: Start difference. First operand 521 states and 849 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:34,193 INFO L93 Difference]: Finished difference Result 1026 states and 1684 transitions. [2025-03-03 14:17:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2025-03-03 14:17:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:34,197 INFO L225 Difference]: With dead ends: 1026 [2025-03-03 14:17:34,197 INFO L226 Difference]: Without dead ends: 521 [2025-03-03 14:17:34,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:34,200 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 12 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:34,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2502 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-03 14:17:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2025-03-03 14:17:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.635678391959799) internal successors, (651), 414 states have internal predecessors, (651), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:17:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 848 transitions. [2025-03-03 14:17:34,214 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 848 transitions. Word has length 92 [2025-03-03 14:17:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:34,214 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 848 transitions. [2025-03-03 14:17:34,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:17:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 848 transitions. [2025-03-03 14:17:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 14:17:34,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:34,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:17:34,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:34,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -787751820, now seen corresponding path program 1 times [2025-03-03 14:17:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:34,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318491775] [2025-03-03 14:17:34,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:34,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:34,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 14:17:34,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 14:17:34,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:34,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:34,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:34,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318491775] [2025-03-03 14:17:34,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318491775] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:34,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382837558] [2025-03-03 14:17:34,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:34,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:34,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:34,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:17:34,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 14:17:34,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 14:17:34,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:34,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:34,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:17:34,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:34,713 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382837558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:34,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723714661] [2025-03-03 14:17:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:34,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:34,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:34,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:34,714 INFO L87 Difference]: Start difference. First operand 521 states and 848 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:34,773 INFO L93 Difference]: Finished difference Result 1475 states and 2434 transitions. [2025-03-03 14:17:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2025-03-03 14:17:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:34,779 INFO L225 Difference]: With dead ends: 1475 [2025-03-03 14:17:34,779 INFO L226 Difference]: Without dead ends: 972 [2025-03-03 14:17:34,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:34,783 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 791 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:34,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1602 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2025-03-03 14:17:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 957. [2025-03-03 14:17:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 738 states have (on average 1.6504065040650406) internal successors, (1218), 769 states have internal predecessors, (1218), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2025-03-03 14:17:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1572 transitions. [2025-03-03 14:17:34,823 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1572 transitions. Word has length 93 [2025-03-03 14:17:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:34,823 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1572 transitions. [2025-03-03 14:17:34,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:34,824 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1572 transitions. [2025-03-03 14:17:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 14:17:34,827 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:34,827 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:34,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:17:35,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 14:17:35,032 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:35,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1168525006, now seen corresponding path program 1 times [2025-03-03 14:17:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971927204] [2025-03-03 14:17:35,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:35,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:17:35,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:17:35,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:35,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971927204] [2025-03-03 14:17:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971927204] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713651361] [2025-03-03 14:17:35,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:35,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:35,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:35,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:35,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:17:35,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:17:35,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:17:35,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:35,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:35,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:17:35,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:35,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:35,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713651361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:35,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:35,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550187739] [2025-03-03 14:17:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:35,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:35,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:35,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:35,517 INFO L87 Difference]: Start difference. First operand 957 states and 1572 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:35,593 INFO L93 Difference]: Finished difference Result 2347 states and 3884 transitions. [2025-03-03 14:17:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2025-03-03 14:17:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:35,604 INFO L225 Difference]: With dead ends: 2347 [2025-03-03 14:17:35,604 INFO L226 Difference]: Without dead ends: 1408 [2025-03-03 14:17:35,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:35,611 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 793 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:35,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1652 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2025-03-03 14:17:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1360. [2025-03-03 14:17:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1051 states have (on average 1.6641294005708849) internal successors, (1749), 1097 states have internal predecessors, (1749), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2025-03-03 14:17:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2254 transitions. [2025-03-03 14:17:35,688 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2254 transitions. Word has length 94 [2025-03-03 14:17:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:35,688 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 2254 transitions. [2025-03-03 14:17:35,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:17:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2254 transitions. [2025-03-03 14:17:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 14:17:35,692 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:35,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:35,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 14:17:35,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:17:35,893 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:35,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 195786151, now seen corresponding path program 1 times [2025-03-03 14:17:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162275446] [2025-03-03 14:17:35,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:35,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 14:17:35,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 14:17:35,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:35,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:36,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:36,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162275446] [2025-03-03 14:17:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162275446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:36,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:36,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014148391] [2025-03-03 14:17:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:36,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:36,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:36,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:36,016 INFO L87 Difference]: Start difference. First operand 1360 states and 2254 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:17:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:36,436 INFO L93 Difference]: Finished difference Result 4016 states and 6763 transitions. [2025-03-03 14:17:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2025-03-03 14:17:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:36,453 INFO L225 Difference]: With dead ends: 4016 [2025-03-03 14:17:36,454 INFO L226 Difference]: Without dead ends: 2674 [2025-03-03 14:17:36,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:17:36,464 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 838 mSDsluCounter, 3428 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:36,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 4379 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:17:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2025-03-03 14:17:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2627. [2025-03-03 14:17:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2035 states have (on average 1.6683046683046683) internal successors, (3395), 2123 states have internal predecessors, (3395), 477 states have call successors, (477), 112 states have call predecessors, (477), 114 states have return successors, (553), 469 states have call predecessors, (553), 473 states have call successors, (553) [2025-03-03 14:17:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4425 transitions. [2025-03-03 14:17:36,594 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4425 transitions. Word has length 96 [2025-03-03 14:17:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:36,595 INFO L471 AbstractCegarLoop]: Abstraction has 2627 states and 4425 transitions. [2025-03-03 14:17:36,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:17:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4425 transitions. [2025-03-03 14:17:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:17:36,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:36,599 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:36,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 14:17:36,599 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:36,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2024228622, now seen corresponding path program 1 times [2025-03-03 14:17:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888173755] [2025-03-03 14:17:36,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:36,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:17:36,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:17:36,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:36,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888173755] [2025-03-03 14:17:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888173755] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948153471] [2025-03-03 14:17:36,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:36,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:36,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:36,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:17:36,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:17:36,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:17:36,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:36,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:37,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:17:37,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:37,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948153471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:37,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836990596] [2025-03-03 14:17:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:37,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:37,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:37,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:37,025 INFO L87 Difference]: Start difference. First operand 2627 states and 4425 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:17:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:37,212 INFO L93 Difference]: Finished difference Result 7813 states and 13367 transitions. [2025-03-03 14:17:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2025-03-03 14:17:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:37,255 INFO L225 Difference]: With dead ends: 7813 [2025-03-03 14:17:37,256 INFO L226 Difference]: Without dead ends: 5205 [2025-03-03 14:17:37,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:37,274 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 833 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:37,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1677 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2025-03-03 14:17:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5138. [2025-03-03 14:17:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3994 states have (on average 1.6732598898347522) internal successors, (6683), 4162 states have internal predecessors, (6683), 920 states have call successors, (920), 212 states have call predecessors, (920), 223 states have return successors, (1151), 919 states have call predecessors, (1151), 914 states have call successors, (1151) [2025-03-03 14:17:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8754 transitions. [2025-03-03 14:17:37,541 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8754 transitions. Word has length 97 [2025-03-03 14:17:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:37,541 INFO L471 AbstractCegarLoop]: Abstraction has 5138 states and 8754 transitions. [2025-03-03 14:17:37,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:17:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8754 transitions. [2025-03-03 14:17:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:17:37,547 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:37,547 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:37,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 14:17:37,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:37,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:37,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1518669997, now seen corresponding path program 1 times [2025-03-03 14:17:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234791453] [2025-03-03 14:17:37,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:37,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:17:37,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:17:37,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:37,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234791453] [2025-03-03 14:17:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234791453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685885836] [2025-03-03 14:17:37,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:37,884 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:37,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:17:37,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:17:38,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:17:38,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:38,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:38,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:17:38,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:38,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685885836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121121728] [2025-03-03 14:17:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:38,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:38,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:38,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:38,279 INFO L87 Difference]: Start difference. First operand 5138 states and 8754 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:17:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:38,746 INFO L93 Difference]: Finished difference Result 14858 states and 25707 transitions. [2025-03-03 14:17:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:38,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2025-03-03 14:17:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:38,821 INFO L225 Difference]: With dead ends: 14858 [2025-03-03 14:17:38,821 INFO L226 Difference]: Without dead ends: 9739 [2025-03-03 14:17:38,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:38,861 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 699 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:38,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1652 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:17:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2025-03-03 14:17:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9696. [2025-03-03 14:17:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9696 states, 7516 states have (on average 1.6395689196381054) internal successors, (12323), 7844 states have internal predecessors, (12323), 1744 states have call successors, (1744), 418 states have call predecessors, (1744), 435 states have return successors, (2296), 1739 states have call predecessors, (2296), 1734 states have call successors, (2296) [2025-03-03 14:17:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9696 states to 9696 states and 16363 transitions. [2025-03-03 14:17:39,278 INFO L78 Accepts]: Start accepts. Automaton has 9696 states and 16363 transitions. Word has length 97 [2025-03-03 14:17:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:39,278 INFO L471 AbstractCegarLoop]: Abstraction has 9696 states and 16363 transitions. [2025-03-03 14:17:39,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:17:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 9696 states and 16363 transitions. [2025-03-03 14:17:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-03 14:17:39,283 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:39,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:39,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:17:39,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:17:39,488 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:39,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1544037565, now seen corresponding path program 1 times [2025-03-03 14:17:39,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:39,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778927381] [2025-03-03 14:17:39,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:39,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:39,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-03 14:17:39,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 14:17:39,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:39,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778927381] [2025-03-03 14:17:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778927381] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477173858] [2025-03-03 14:17:39,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:39,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:39,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:39,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:39,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:17:39,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-03 14:17:39,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 14:17:39,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:39,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:39,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:17:39,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:39,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477173858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:39,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-03-03 14:17:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913864694] [2025-03-03 14:17:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:39,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:17:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:39,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:17:39,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:17:39,992 INFO L87 Difference]: Start difference. First operand 9696 states and 16363 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 14:17:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:40,453 INFO L93 Difference]: Finished difference Result 18301 states and 30976 transitions. [2025-03-03 14:17:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:17:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2025-03-03 14:17:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:40,508 INFO L225 Difference]: With dead ends: 18301 [2025-03-03 14:17:40,509 INFO L226 Difference]: Without dead ends: 8623 [2025-03-03 14:17:40,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:17:40,554 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 711 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:40,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 3271 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:17:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2025-03-03 14:17:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 8601. [2025-03-03 14:17:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 6689 states have (on average 1.6269995515024667) internal successors, (10883), 6964 states have internal predecessors, (10883), 1518 states have call successors, (1518), 378 states have call predecessors, (1518), 393 states have return successors, (1978), 1514 states have call predecessors, (1978), 1508 states have call successors, (1978) [2025-03-03 14:17:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 14379 transitions. [2025-03-03 14:17:40,851 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 14379 transitions. Word has length 102 [2025-03-03 14:17:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:40,852 INFO L471 AbstractCegarLoop]: Abstraction has 8601 states and 14379 transitions. [2025-03-03 14:17:40,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 14:17:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 14379 transitions. [2025-03-03 14:17:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-03 14:17:40,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:40,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:40,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 14:17:41,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 14:17:41,055 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:41,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1864287910, now seen corresponding path program 1 times [2025-03-03 14:17:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767606234] [2025-03-03 14:17:41,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:41,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-03 14:17:41,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 14:17:41,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:41,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:41,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:41,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767606234] [2025-03-03 14:17:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767606234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:41,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52351910] [2025-03-03 14:17:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:41,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:41,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:41,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:41,125 INFO L87 Difference]: Start difference. First operand 8601 states and 14379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:17:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:41,501 INFO L93 Difference]: Finished difference Result 17232 states and 29153 transitions. [2025-03-03 14:17:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2025-03-03 14:17:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:41,553 INFO L225 Difference]: With dead ends: 17232 [2025-03-03 14:17:41,554 INFO L226 Difference]: Without dead ends: 8649 [2025-03-03 14:17:41,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:41,606 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 12 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:41,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2468 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8649 states. [2025-03-03 14:17:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8649 to 8617. [2025-03-03 14:17:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8617 states, 6701 states have (on average 1.6252798089837337) internal successors, (10891), 6976 states have internal predecessors, (10891), 1518 states have call successors, (1518), 386 states have call predecessors, (1518), 397 states have return successors, (1952), 1510 states have call predecessors, (1952), 1508 states have call successors, (1952) [2025-03-03 14:17:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8617 states to 8617 states and 14361 transitions. [2025-03-03 14:17:41,915 INFO L78 Accepts]: Start accepts. Automaton has 8617 states and 14361 transitions. Word has length 102 [2025-03-03 14:17:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 8617 states and 14361 transitions. [2025-03-03 14:17:41,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:17:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 8617 states and 14361 transitions. [2025-03-03 14:17:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-03 14:17:41,919 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:41,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:41,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:17:41,920 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:41,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash 529817576, now seen corresponding path program 1 times [2025-03-03 14:17:41,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:41,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287521385] [2025-03-03 14:17:41,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:41,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:41,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-03 14:17:41,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-03 14:17:41,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:41,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:17:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287521385] [2025-03-03 14:17:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287521385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:42,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:42,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973070203] [2025-03-03 14:17:42,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:42,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:42,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:42,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:42,112 INFO L87 Difference]: Start difference. First operand 8617 states and 14361 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:17:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:42,842 INFO L93 Difference]: Finished difference Result 25797 states and 44181 transitions. [2025-03-03 14:17:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2025-03-03 14:17:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:42,948 INFO L225 Difference]: With dead ends: 25797 [2025-03-03 14:17:42,948 INFO L226 Difference]: Without dead ends: 17198 [2025-03-03 14:17:43,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:17:43,002 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 832 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:43,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4354 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:17:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17198 states. [2025-03-03 14:17:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17198 to 17097. [2025-03-03 14:17:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17097 states, 13308 states have (on average 1.621731289449955) internal successors, (21582), 13849 states have internal predecessors, (21582), 2991 states have call successors, (2991), 766 states have call predecessors, (2991), 797 states have return successors, (4505), 2993 states have call predecessors, (4505), 2973 states have call successors, (4505) [2025-03-03 14:17:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17097 states to 17097 states and 29078 transitions. [2025-03-03 14:17:43,696 INFO L78 Accepts]: Start accepts. Automaton has 17097 states and 29078 transitions. Word has length 110 [2025-03-03 14:17:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:43,697 INFO L471 AbstractCegarLoop]: Abstraction has 17097 states and 29078 transitions. [2025-03-03 14:17:43,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:17:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 17097 states and 29078 transitions. [2025-03-03 14:17:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-03 14:17:43,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:43,700 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:43,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:17:43,700 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:43,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1358571427, now seen corresponding path program 1 times [2025-03-03 14:17:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:43,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112971761] [2025-03-03 14:17:43,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:43,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-03 14:17:43,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 14:17:43,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:43,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:17:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112971761] [2025-03-03 14:17:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112971761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:43,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497623046] [2025-03-03 14:17:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:43,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:43,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:43,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:43,769 INFO L87 Difference]: Start difference. First operand 17097 states and 29078 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:17:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:44,471 INFO L93 Difference]: Finished difference Result 34320 states and 59371 transitions. [2025-03-03 14:17:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2025-03-03 14:17:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:44,562 INFO L225 Difference]: With dead ends: 34320 [2025-03-03 14:17:44,562 INFO L226 Difference]: Without dead ends: 17241 [2025-03-03 14:17:44,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:44,663 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 12 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:44,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2462 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17241 states. [2025-03-03 14:17:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17241 to 17177. [2025-03-03 14:17:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17177 states, 13380 states have (on average 1.61898355754858) internal successors, (21662), 13905 states have internal predecessors, (21662), 2991 states have call successors, (2991), 798 states have call predecessors, (2991), 805 states have return successors, (4465), 2985 states have call predecessors, (4465), 2973 states have call successors, (4465) [2025-03-03 14:17:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17177 states to 17177 states and 29118 transitions. [2025-03-03 14:17:45,467 INFO L78 Accepts]: Start accepts. Automaton has 17177 states and 29118 transitions. Word has length 111 [2025-03-03 14:17:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:45,468 INFO L471 AbstractCegarLoop]: Abstraction has 17177 states and 29118 transitions. [2025-03-03 14:17:45,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:17:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 17177 states and 29118 transitions. [2025-03-03 14:17:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-03 14:17:45,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:45,473 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:45,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:17:45,474 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:45,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 824080281, now seen corresponding path program 1 times [2025-03-03 14:17:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:45,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912475869] [2025-03-03 14:17:45,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:45,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:17:45,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:17:45,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:45,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:17:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912475869] [2025-03-03 14:17:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912475869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:45,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:45,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:45,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90707216] [2025-03-03 14:17:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:45,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:45,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:45,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:45,628 INFO L87 Difference]: Start difference. First operand 17177 states and 29118 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:17:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:47,013 INFO L93 Difference]: Finished difference Result 51617 states and 90998 transitions. [2025-03-03 14:17:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2025-03-03 14:17:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:47,222 INFO L225 Difference]: With dead ends: 51617 [2025-03-03 14:17:47,222 INFO L226 Difference]: Without dead ends: 34458 [2025-03-03 14:17:47,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:17:47,344 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 827 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:47,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 4373 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:17:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34458 states. [2025-03-03 14:17:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34458 to 34293. [2025-03-03 14:17:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34293 states, 26723 states have (on average 1.615350072970849) internal successors, (43167), 27764 states have internal predecessors, (43167), 5948 states have call successors, (5948), 1590 states have call predecessors, (5948), 1621 states have return successors, (10787), 5962 states have call predecessors, (10787), 5914 states have call successors, (10787) [2025-03-03 14:17:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34293 states to 34293 states and 59902 transitions. [2025-03-03 14:17:48,671 INFO L78 Accepts]: Start accepts. Automaton has 34293 states and 59902 transitions. Word has length 120 [2025-03-03 14:17:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:48,673 INFO L471 AbstractCegarLoop]: Abstraction has 34293 states and 59902 transitions. [2025-03-03 14:17:48,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:17:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 34293 states and 59902 transitions. [2025-03-03 14:17:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-03 14:17:48,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:48,676 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:48,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 14:17:48,676 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:48,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash -433483861, now seen corresponding path program 1 times [2025-03-03 14:17:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:48,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583073119] [2025-03-03 14:17:48,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:48,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-03 14:17:48,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-03 14:17:48,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:17:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583073119] [2025-03-03 14:17:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583073119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:48,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:48,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:48,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847234175] [2025-03-03 14:17:48,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:48,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:48,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:48,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:48,737 INFO L87 Difference]: Start difference. First operand 34293 states and 59902 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:17:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:50,294 INFO L93 Difference]: Finished difference Result 68856 states and 123460 transitions. [2025-03-03 14:17:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:50,295 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2025-03-03 14:17:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:50,517 INFO L225 Difference]: With dead ends: 68856 [2025-03-03 14:17:50,517 INFO L226 Difference]: Without dead ends: 34581 [2025-03-03 14:17:50,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:50,829 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 11 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:50,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2465 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34581 states. [2025-03-03 14:17:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34581 to 34453. [2025-03-03 14:17:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34453 states, 26867 states have (on average 1.6126474857632038) internal successors, (43327), 27908 states have internal predecessors, (43327), 5948 states have call successors, (5948), 1622 states have call predecessors, (5948), 1637 states have return successors, (10731), 5946 states have call predecessors, (10731), 5914 states have call successors, (10731) [2025-03-03 14:17:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34453 states to 34453 states and 60006 transitions. [2025-03-03 14:17:52,466 INFO L78 Accepts]: Start accepts. Automaton has 34453 states and 60006 transitions. Word has length 121 [2025-03-03 14:17:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:52,466 INFO L471 AbstractCegarLoop]: Abstraction has 34453 states and 60006 transitions. [2025-03-03 14:17:52,466 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:17:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34453 states and 60006 transitions. [2025-03-03 14:17:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:17:52,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:52,470 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:52,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 14:17:52,470 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:52,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash -225608644, now seen corresponding path program 1 times [2025-03-03 14:17:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405033947] [2025-03-03 14:17:52,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:52,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:17:52,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:17:52,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:52,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:17:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405033947] [2025-03-03 14:17:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405033947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609279741] [2025-03-03 14:17:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:52,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:52,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:52,584 INFO L87 Difference]: Start difference. First operand 34453 states and 60006 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:17:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:55,690 INFO L93 Difference]: Finished difference Result 103681 states and 191458 transitions. [2025-03-03 14:17:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:55,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2025-03-03 14:17:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:56,090 INFO L225 Difference]: With dead ends: 103681 [2025-03-03 14:17:56,090 INFO L226 Difference]: Without dead ends: 69246 [2025-03-03 14:17:56,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:17:56,324 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 824 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:56,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 4359 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:17:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69246 states. [2025-03-03 14:17:58,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69246 to 68953. [2025-03-03 14:17:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68953 states, 53778 states have (on average 1.6098776451336978) internal successors, (86576), 55851 states have internal predecessors, (86576), 11873 states have call successors, (11873), 3238 states have call predecessors, (11873), 3301 states have return successors, (27105), 11911 states have call predecessors, (27105), 11807 states have call successors, (27105) [2025-03-03 14:17:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68953 states to 68953 states and 125554 transitions. [2025-03-03 14:17:59,641 INFO L78 Accepts]: Start accepts. Automaton has 68953 states and 125554 transitions. Word has length 131 [2025-03-03 14:17:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:59,642 INFO L471 AbstractCegarLoop]: Abstraction has 68953 states and 125554 transitions. [2025-03-03 14:17:59,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:17:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 68953 states and 125554 transitions. [2025-03-03 14:17:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-03 14:17:59,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:59,647 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:59,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 14:17:59,647 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:59,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash -938366719, now seen corresponding path program 1 times [2025-03-03 14:17:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696410205] [2025-03-03 14:17:59,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:59,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:17:59,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:17:59,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:59,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:17:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:59,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696410205] [2025-03-03 14:17:59,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696410205] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:59,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:59,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781874830] [2025-03-03 14:17:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:59,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:59,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:59,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:59,904 INFO L87 Difference]: Start difference. First operand 68953 states and 125554 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:18:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:04,047 INFO L93 Difference]: Finished difference Result 138528 states and 262545 transitions. [2025-03-03 14:18:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-03-03 14:18:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:04,655 INFO L225 Difference]: With dead ends: 138528 [2025-03-03 14:18:04,655 INFO L226 Difference]: Without dead ends: 69593 [2025-03-03 14:18:05,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:05,233 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 9 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:05,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2462 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69593 states. [2025-03-03 14:18:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69593 to 69337. [2025-03-03 14:18:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69337 states, 54130 states have (on average 1.606502863476815) internal successors, (86960), 56203 states have internal predecessors, (86960), 11873 states have call successors, (11873), 3302 states have call predecessors, (11873), 3333 states have return successors, (27041), 11879 states have call predecessors, (27041), 11807 states have call successors, (27041) [2025-03-03 14:18:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69337 states to 69337 states and 125874 transitions. [2025-03-03 14:18:08,630 INFO L78 Accepts]: Start accepts. Automaton has 69337 states and 125874 transitions. Word has length 132 [2025-03-03 14:18:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:08,630 INFO L471 AbstractCegarLoop]: Abstraction has 69337 states and 125874 transitions. [2025-03-03 14:18:08,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:18:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 69337 states and 125874 transitions. [2025-03-03 14:18:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-03 14:18:08,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:08,638 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:08,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-03 14:18:08,638 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:08,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:08,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1167866429, now seen corresponding path program 1 times [2025-03-03 14:18:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:08,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890947262] [2025-03-03 14:18:08,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:08,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 14:18:08,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 14:18:08,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:08,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-03 14:18:08,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:08,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890947262] [2025-03-03 14:18:08,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890947262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:08,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:08,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:18:08,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360928658] [2025-03-03 14:18:08,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:08,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:18:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:08,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:18:08,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:08,801 INFO L87 Difference]: Start difference. First operand 69337 states and 125874 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 14:18:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,124 INFO L93 Difference]: Finished difference Result 141822 states and 263393 transitions. [2025-03-03 14:18:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:18:13,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 143 [2025-03-03 14:18:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,693 INFO L225 Difference]: With dead ends: 141822 [2025-03-03 14:18:13,693 INFO L226 Difference]: Without dead ends: 72455 [2025-03-03 14:18:14,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:14,587 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 715 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 3410 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72455 states.