./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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_product19.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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:47:56,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:47:56,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:47:56,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:47:56,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:47:56,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:47:56,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:47:56,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:47:56,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:47:56,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:47:56,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:47:56,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:47:56,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:47:56,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:47:56,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:47:56,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:47:56,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:47:56,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:47:56,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:47:56,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:47:56,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:47:56,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:47:56,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:47:56,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:47:56,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:47:56,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:47:56,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:47:56,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:47:56,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:47:56,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:47:56,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:47:56,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:47:56,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:47:56,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:47:56,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:47:56,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:47:56,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:47:56,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:47:56,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:47:56,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:47:56,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:47:56,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:47:56,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2024-11-22 01:47:56,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:47:56,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:47:56,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:47:56,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:47:56,992 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:47:56,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-11-22 01:47:58,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:47:58,860 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:47:58,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-11-22 01:47:58,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb5b3dce/4bc9fb9399a744e8b080a50b304127f2/FLAG78e6f0efc [2024-11-22 01:47:58,915 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb5b3dce/4bc9fb9399a744e8b080a50b304127f2 [2024-11-22 01:47:58,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:47:58,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:47:58,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:47:58,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:47:58,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:47:58,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:58" (1/1) ... [2024-11-22 01:47:58,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5508131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58, skipping insertion in model container [2024-11-22 01:47:58,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:58" (1/1) ... [2024-11-22 01:47:58,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:47:59,523 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_product19.cil.c[55726,55739] [2024-11-22 01:47:59,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:47:59,610 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:47:59,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-22 01:47:59,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2024-11-22 01:47:59,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [423] [2024-11-22 01:47:59,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [789] [2024-11-22 01:47:59,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2329] [2024-11-22 01:47:59,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2447] [2024-11-22 01:47:59,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2482] [2024-11-22 01:47:59,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2669] [2024-11-22 01:47:59,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2678] [2024-11-22 01:47:59,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2769] [2024-11-22 01:47:59,711 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_product19.cil.c[55726,55739] [2024-11-22 01:47:59,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:47:59,759 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:47:59,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59 WrapperNode [2024-11-22 01:47:59,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:47:59,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:47:59,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:47:59,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:47:59,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,858 INFO L138 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1090 [2024-11-22 01:47:59,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:47:59,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:47:59,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:47:59,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:47:59,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,915 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]. [2024-11-22 01:47:59,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:47:59,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:48:00,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:48:00,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:48:00,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:48:00,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:48:00,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (1/1) ... [2024-11-22 01:48:00,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:48:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:00,055 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) [2024-11-22 01:48:00,061 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 [2024-11-22 01:48:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:48:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-22 01:48:00,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-22 01:48:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-22 01:48:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-22 01:48:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-22 01:48:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-22 01:48:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-22 01:48:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-22 01:48:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-22 01:48:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-22 01:48:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-22 01:48:00,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-22 01:48:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-22 01:48:00,105 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-22 01:48:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-22 01:48:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-22 01:48:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-22 01:48:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-22 01:48:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-22 01:48:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-22 01:48:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-22 01:48:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-22 01:48:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-22 01:48:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-22 01:48:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-22 01:48:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-22 01:48:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-22 01:48:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-22 01:48:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-22 01:48:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-22 01:48:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-22 01:48:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-22 01:48:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-22 01:48:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-22 01:48:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-22 01:48:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-22 01:48:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-22 01:48:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-22 01:48:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-22 01:48:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-22 01:48:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-22 01:48:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-22 01:48:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-22 01:48:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-22 01:48:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:48:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 01:48:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 01:48:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 01:48:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 01:48:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 01:48:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 01:48:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 01:48:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 01:48:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 01:48:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 01:48:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 01:48:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 01:48:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 01:48:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 01:48:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-22 01:48:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-22 01:48:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-22 01:48:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-22 01:48:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-22 01:48:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-22 01:48:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-22 01:48:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-22 01:48:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:48:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:48:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-22 01:48:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-22 01:48:00,314 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:48:00,318 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:48:01,619 INFO L? ?]: Removed 457 outVars from TransFormulas that were not future-live. [2024-11-22 01:48:01,620 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:48:01,662 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:48:01,662 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:48:01,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:01 BoogieIcfgContainer [2024-11-22 01:48:01,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:48:01,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:48:01,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:48:01,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:48:01,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:47:58" (1/3) ... [2024-11-22 01:48:01,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697738f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:01, skipping insertion in model container [2024-11-22 01:48:01,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:59" (2/3) ... [2024-11-22 01:48:01,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697738f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:01, skipping insertion in model container [2024-11-22 01:48:01,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:01" (3/3) ... [2024-11-22 01:48:01,673 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2024-11-22 01:48:01,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:48:01,690 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:48:01,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:48:01,780 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;@24db093a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:48:01,781 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:48:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-22 01:48:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 01:48:01,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:01,816 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:01,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:01,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1739480025, now seen corresponding path program 1 times [2024-11-22 01:48:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87593675] [2024-11-22 01:48:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87593675] [2024-11-22 01:48:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87593675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:48:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527372139] [2024-11-22 01:48:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:02,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:48:02,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:02,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:48:02,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:02,708 INFO L87 Difference]: Start difference. First operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:02,980 INFO L93 Difference]: Finished difference Result 1175 states and 1952 transitions. [2024-11-22 01:48:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:48:02,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2024-11-22 01:48:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:03,006 INFO L225 Difference]: With dead ends: 1175 [2024-11-22 01:48:03,006 INFO L226 Difference]: Without dead ends: 594 [2024-11-22 01:48:03,018 INFO L431 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 [2024-11-22 01:48:03,022 INFO L432 NwaCegarLoop]: 952 mSDtfsCounter, 91 mSDsluCounter, 4675 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5627 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 [2024-11-22 01:48:03,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5627 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-22 01:48:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2024-11-22 01:48:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6593406593406594) internal successors, (755), 473 states have internal predecessors, (755), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-11-22 01:48:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2024-11-22 01:48:03,149 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 113 [2024-11-22 01:48:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:03,151 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2024-11-22 01:48:03,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2024-11-22 01:48:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 01:48:03,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:03,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:03,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:48:03,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:03,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1888448992, now seen corresponding path program 1 times [2024-11-22 01:48:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:03,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984780727] [2024-11-22 01:48:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984780727] [2024-11-22 01:48:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984780727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:48:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427676255] [2024-11-22 01:48:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:03,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:48:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:48:03,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:03,575 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:03,706 INFO L93 Difference]: Finished difference Result 1179 states and 1947 transitions. [2024-11-22 01:48:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:48:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2024-11-22 01:48:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:03,715 INFO L225 Difference]: With dead ends: 1179 [2024-11-22 01:48:03,715 INFO L226 Difference]: Without dead ends: 603 [2024-11-22 01:48:03,719 INFO L431 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 [2024-11-22 01:48:03,720 INFO L432 NwaCegarLoop]: 953 mSDtfsCounter, 90 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5622 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:03,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5622 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-22 01:48:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 592. [2024-11-22 01:48:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6593406593406594) internal successors, (755), 473 states have internal predecessors, (755), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-11-22 01:48:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2024-11-22 01:48:03,769 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 114 [2024-11-22 01:48:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:03,770 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2024-11-22 01:48:03,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2024-11-22 01:48:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 01:48:03,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:03,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:03,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:48:03,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:03,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1893422536, now seen corresponding path program 1 times [2024-11-22 01:48:03,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995124737] [2024-11-22 01:48:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:03,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995124737] [2024-11-22 01:48:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995124737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624340434] [2024-11-22 01:48:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:03,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:03,936 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:48:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:04,007 INFO L93 Difference]: Finished difference Result 1166 states and 1925 transitions. [2024-11-22 01:48:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:48:04,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-11-22 01:48:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:04,030 INFO L225 Difference]: With dead ends: 1166 [2024-11-22 01:48:04,030 INFO L226 Difference]: Without dead ends: 562 [2024-11-22 01:48:04,035 INFO L431 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 [2024-11-22 01:48:04,036 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 14 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2821 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 [2024-11-22 01:48:04,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2821 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-22 01:48:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-22 01:48:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6425233644859814) internal successors, (703), 444 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 916 transitions. [2024-11-22 01:48:04,072 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 916 transitions. Word has length 114 [2024-11-22 01:48:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:04,072 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 916 transitions. [2024-11-22 01:48:04,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:48:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 916 transitions. [2024-11-22 01:48:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-22 01:48:04,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:04,077 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:04,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:48:04,077 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:04,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:04,080 INFO L85 PathProgramCache]: Analyzing trace with hash 120410219, now seen corresponding path program 1 times [2024-11-22 01:48:04,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:04,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511430459] [2024-11-22 01:48:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:04,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:04,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:04,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511430459] [2024-11-22 01:48:04,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511430459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:04,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:04,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:48:04,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176187982] [2024-11-22 01:48:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:04,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:48:04,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:48:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:04,343 INFO L87 Difference]: Start difference. First operand 562 states and 916 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:04,428 INFO L93 Difference]: Finished difference Result 1117 states and 1831 transitions. [2024-11-22 01:48:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:48:04,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-11-22 01:48:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:04,434 INFO L225 Difference]: With dead ends: 1117 [2024-11-22 01:48:04,435 INFO L226 Difference]: Without dead ends: 556 [2024-11-22 01:48:04,438 INFO L431 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 [2024-11-22 01:48:04,439 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 63 mSDsluCounter, 4472 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5378 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 [2024-11-22 01:48:04,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5378 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:04,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-22 01:48:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2024-11-22 01:48:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6350710900473933) internal successors, (690), 438 states have internal predecessors, (690), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 903 transitions. [2024-11-22 01:48:04,463 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 903 transitions. Word has length 115 [2024-11-22 01:48:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:04,463 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 903 transitions. [2024-11-22 01:48:04,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 903 transitions. [2024-11-22 01:48:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 01:48:04,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:04,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:04,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:48:04,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:04,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 302466212, now seen corresponding path program 1 times [2024-11-22 01:48:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879182373] [2024-11-22 01:48:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:04,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879182373] [2024-11-22 01:48:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879182373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:04,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:48:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810129869] [2024-11-22 01:48:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:04,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:48:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:48:04,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:04,706 INFO L87 Difference]: Start difference. First operand 556 states and 903 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:04,790 INFO L93 Difference]: Finished difference Result 1105 states and 1805 transitions. [2024-11-22 01:48:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:48:04,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-22 01:48:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:04,796 INFO L225 Difference]: With dead ends: 1105 [2024-11-22 01:48:04,797 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:04,802 INFO L431 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 [2024-11-22 01:48:04,803 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 49 mSDsluCounter, 4424 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5318 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 [2024-11-22 01:48:04,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5318 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6274038461538463) internal successors, (677), 432 states have internal predecessors, (677), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 890 transitions. [2024-11-22 01:48:04,830 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 890 transitions. Word has length 116 [2024-11-22 01:48:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:04,831 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 890 transitions. [2024-11-22 01:48:04,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 890 transitions. [2024-11-22 01:48:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 01:48:04,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:04,835 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:04,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 01:48:04,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:04,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1050126885, now seen corresponding path program 1 times [2024-11-22 01:48:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:04,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819893642] [2024-11-22 01:48:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819893642] [2024-11-22 01:48:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819893642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:48:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041594175] [2024-11-22 01:48:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:05,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:48:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:48:05,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:05,012 INFO L87 Difference]: Start difference. First operand 550 states and 890 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:05,084 INFO L93 Difference]: Finished difference Result 1093 states and 1779 transitions. [2024-11-22 01:48:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:48:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-22 01:48:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:05,089 INFO L225 Difference]: With dead ends: 1093 [2024-11-22 01:48:05,090 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:05,093 INFO L431 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 [2024-11-22 01:48:05,095 INFO L432 NwaCegarLoop]: 882 mSDtfsCounter, 24 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5270 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 [2024-11-22 01:48:05,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5270 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.625) internal successors, (676), 432 states have internal predecessors, (676), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 889 transitions. [2024-11-22 01:48:05,119 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 889 transitions. Word has length 116 [2024-11-22 01:48:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:05,119 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 889 transitions. [2024-11-22 01:48:05,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 889 transitions. [2024-11-22 01:48:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-22 01:48:05,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:05,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:05,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 01:48:05,124 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:05,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -311802705, now seen corresponding path program 1 times [2024-11-22 01:48:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905019073] [2024-11-22 01:48:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:05,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905019073] [2024-11-22 01:48:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905019073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:05,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:05,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:05,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897523282] [2024-11-22 01:48:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:05,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:05,259 INFO L87 Difference]: Start difference. First operand 550 states and 889 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2024-11-22 01:48:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:05,310 INFO L93 Difference]: Finished difference Result 1084 states and 1764 transitions. [2024-11-22 01:48:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:48:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 117 [2024-11-22 01:48:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:05,314 INFO L225 Difference]: With dead ends: 1084 [2024-11-22 01:48:05,315 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:05,317 INFO L431 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 [2024-11-22 01:48:05,318 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 15 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2607 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 [2024-11-22 01:48:05,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2607 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6225961538461537) internal successors, (675), 432 states have internal predecessors, (675), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 888 transitions. [2024-11-22 01:48:05,339 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 888 transitions. Word has length 117 [2024-11-22 01:48:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:05,342 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 888 transitions. [2024-11-22 01:48:05,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2024-11-22 01:48:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 888 transitions. [2024-11-22 01:48:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 01:48:05,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:05,346 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:05,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 01:48:05,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:05,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1957722396, now seen corresponding path program 1 times [2024-11-22 01:48:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954884844] [2024-11-22 01:48:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:05,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954884844] [2024-11-22 01:48:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954884844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:05,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627683628] [2024-11-22 01:48:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:05,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:05,479 INFO L87 Difference]: Start difference. First operand 550 states and 888 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2024-11-22 01:48:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:05,549 INFO L93 Difference]: Finished difference Result 1084 states and 1762 transitions. [2024-11-22 01:48:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:48:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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 118 [2024-11-22 01:48:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:05,554 INFO L225 Difference]: With dead ends: 1084 [2024-11-22 01:48:05,557 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:05,561 INFO L431 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 [2024-11-22 01:48:05,562 INFO L432 NwaCegarLoop]: 875 mSDtfsCounter, 14 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2609 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 [2024-11-22 01:48:05,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2609 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6201923076923077) internal successors, (674), 432 states have internal predecessors, (674), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 887 transitions. [2024-11-22 01:48:05,580 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 887 transitions. Word has length 118 [2024-11-22 01:48:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:05,581 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 887 transitions. [2024-11-22 01:48:05,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2024-11-22 01:48:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 887 transitions. [2024-11-22 01:48:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-22 01:48:05,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:05,584 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:05,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 01:48:05,584 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:05,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1102098132, now seen corresponding path program 1 times [2024-11-22 01:48:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886450711] [2024-11-22 01:48:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886450711] [2024-11-22 01:48:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886450711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:05,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:05,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491517298] [2024-11-22 01:48:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:05,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:05,712 INFO L87 Difference]: Start difference. First operand 550 states and 887 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 01:48:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:05,759 INFO L93 Difference]: Finished difference Result 1084 states and 1760 transitions. [2024-11-22 01:48:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:48:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 119 [2024-11-22 01:48:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:05,765 INFO L225 Difference]: With dead ends: 1084 [2024-11-22 01:48:05,765 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:05,768 INFO L431 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 [2024-11-22 01:48:05,769 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 13 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2611 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 [2024-11-22 01:48:05,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2611 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6177884615384615) internal successors, (673), 432 states have internal predecessors, (673), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 886 transitions. [2024-11-22 01:48:05,789 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 886 transitions. Word has length 119 [2024-11-22 01:48:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:05,789 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 886 transitions. [2024-11-22 01:48:05,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 01:48:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 886 transitions. [2024-11-22 01:48:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 01:48:05,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:05,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:05,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 01:48:05,793 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:05,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash -283989911, now seen corresponding path program 1 times [2024-11-22 01:48:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:05,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081966625] [2024-11-22 01:48:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081966625] [2024-11-22 01:48:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081966625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:05,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:05,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72257071] [2024-11-22 01:48:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:05,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:05,913 INFO L87 Difference]: Start difference. First operand 550 states and 886 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2024-11-22 01:48:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:05,953 INFO L93 Difference]: Finished difference Result 1084 states and 1758 transitions. [2024-11-22 01:48:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:48:05,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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 120 [2024-11-22 01:48:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:05,959 INFO L225 Difference]: With dead ends: 1084 [2024-11-22 01:48:05,959 INFO L226 Difference]: Without dead ends: 550 [2024-11-22 01:48:05,961 INFO L431 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 [2024-11-22 01:48:05,962 INFO L432 NwaCegarLoop]: 877 mSDtfsCounter, 12 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2613 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 [2024-11-22 01:48:05,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2613 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-22 01:48:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-22 01:48:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6153846153846154) internal successors, (672), 432 states have internal predecessors, (672), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 01:48:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 885 transitions. [2024-11-22 01:48:05,982 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 885 transitions. Word has length 120 [2024-11-22 01:48:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:05,982 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 885 transitions. [2024-11-22 01:48:05,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2024-11-22 01:48:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 885 transitions. [2024-11-22 01:48:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-22 01:48:05,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:05,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 01:48:05,986 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:05,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2054290183, now seen corresponding path program 1 times [2024-11-22 01:48:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563242729] [2024-11-22 01:48:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:48:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563242729] [2024-11-22 01:48:06,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563242729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863192228] [2024-11-22 01:48:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:06,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:06,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:06,238 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) [2024-11-22 01:48:06,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:48:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:06,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:48:06,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:48:06,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863192228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:06,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:06,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:48:06,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339776660] [2024-11-22 01:48:06,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:06,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:48:06,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:06,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:48:06,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:06,773 INFO L87 Difference]: Start difference. First operand 550 states and 885 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:06,849 INFO L93 Difference]: Finished difference Result 1561 states and 2543 transitions. [2024-11-22 01:48:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:48:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-22 01:48:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:06,861 INFO L225 Difference]: With dead ends: 1561 [2024-11-22 01:48:06,861 INFO L226 Difference]: Without dead ends: 1029 [2024-11-22 01:48:06,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:06,867 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 808 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2355 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 [2024-11-22 01:48:06,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 2355 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-22 01:48:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1014. [2024-11-22 01:48:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 774 states have (on average 1.627906976744186) internal successors, (1260), 805 states have internal predecessors, (1260), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2024-11-22 01:48:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1644 transitions. [2024-11-22 01:48:06,916 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1644 transitions. Word has length 121 [2024-11-22 01:48:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:06,917 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1644 transitions. [2024-11-22 01:48:06,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:06,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1644 transitions. [2024-11-22 01:48:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 01:48:06,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:06,922 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:06,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:48:07,126 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 [2024-11-22 01:48:07,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:07,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 71415181, now seen corresponding path program 1 times [2024-11-22 01:48:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:07,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993455328] [2024-11-22 01:48:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:48:07,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:07,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993455328] [2024-11-22 01:48:07,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993455328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:07,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360959391] [2024-11-22 01:48:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:07,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:07,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:07,371 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) [2024-11-22 01:48:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:48:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:07,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:48:07,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:48:07,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360959391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:07,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:48:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335685829] [2024-11-22 01:48:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:07,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:48:07,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:48:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:07,881 INFO L87 Difference]: Start difference. First operand 1014 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:07,971 INFO L93 Difference]: Finished difference Result 2489 states and 4063 transitions. [2024-11-22 01:48:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:48:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-11-22 01:48:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:07,981 INFO L225 Difference]: With dead ends: 2489 [2024-11-22 01:48:07,981 INFO L226 Difference]: Without dead ends: 1493 [2024-11-22 01:48:07,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:07,987 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 809 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1665 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 [2024-11-22 01:48:07,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1665 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2024-11-22 01:48:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1445. [2024-11-22 01:48:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1105 states have (on average 1.6398190045248868) internal successors, (1812), 1151 states have internal predecessors, (1812), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2024-11-22 01:48:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2361 transitions. [2024-11-22 01:48:08,051 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2361 transitions. Word has length 122 [2024-11-22 01:48:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:08,052 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 2361 transitions. [2024-11-22 01:48:08,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 01:48:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2361 transitions. [2024-11-22 01:48:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 01:48:08,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:08,059 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:08,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 01:48:08,259 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 [2024-11-22 01:48:08,260 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:08,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 543393635, now seen corresponding path program 1 times [2024-11-22 01:48:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025651206] [2024-11-22 01:48:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025651206] [2024-11-22 01:48:08,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025651206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:08,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:08,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:48:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867709302] [2024-11-22 01:48:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:08,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:08,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:48:08,467 INFO L87 Difference]: Start difference. First operand 1445 states and 2361 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-22 01:48:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:09,030 INFO L93 Difference]: Finished difference Result 4271 states and 7084 transitions. [2024-11-22 01:48:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:48:09,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 124 [2024-11-22 01:48:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:09,051 INFO L225 Difference]: With dead ends: 4271 [2024-11-22 01:48:09,051 INFO L226 Difference]: Without dead ends: 2844 [2024-11-22 01:48:09,061 INFO L431 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 [2024-11-22 01:48:09,062 INFO L432 NwaCegarLoop]: 988 mSDtfsCounter, 874 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:09,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 4548 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:48:09,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2024-11-22 01:48:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2797. [2024-11-22 01:48:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2143 states have (on average 1.643023798413439) internal successors, (3521), 2231 states have internal predecessors, (3521), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (597), 513 states have call predecessors, (597), 517 states have call successors, (597) [2024-11-22 01:48:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4639 transitions. [2024-11-22 01:48:09,203 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4639 transitions. Word has length 124 [2024-11-22 01:48:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:09,204 INFO L471 AbstractCegarLoop]: Abstraction has 2797 states and 4639 transitions. [2024-11-22 01:48:09,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-22 01:48:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4639 transitions. [2024-11-22 01:48:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:48:09,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:09,211 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:09,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 01:48:09,211 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:09,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1661583585, now seen corresponding path program 1 times [2024-11-22 01:48:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:09,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623760407] [2024-11-22 01:48:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:09,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:48:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623760407] [2024-11-22 01:48:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623760407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587348819] [2024-11-22 01:48:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:09,453 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) [2024-11-22 01:48:09,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:48:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:09,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:48:09,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 01:48:09,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:09,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587348819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:09,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:09,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:48:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808406600] [2024-11-22 01:48:09,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:09,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:48:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:48:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:09,848 INFO L87 Difference]: Start difference. First operand 2797 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-22 01:48:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:09,999 INFO L93 Difference]: Finished difference Result 5606 states and 9363 transitions. [2024-11-22 01:48:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:48:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 125 [2024-11-22 01:48:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:10,029 INFO L225 Difference]: With dead ends: 5606 [2024-11-22 01:48:10,030 INFO L226 Difference]: Without dead ends: 2827 [2024-11-22 01:48:10,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:10,054 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 17 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:10,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1748 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-11-22 01:48:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2024-11-22 01:48:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2167 states have (on average 1.6377480387632672) internal successors, (3549), 2255 states have internal predecessors, (3549), 525 states have call successors, (525), 130 states have call predecessors, (525), 132 states have return successors, (603), 517 states have call predecessors, (603), 521 states have call successors, (603) [2024-11-22 01:48:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4677 transitions. [2024-11-22 01:48:10,250 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4677 transitions. Word has length 125 [2024-11-22 01:48:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:10,250 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4677 transitions. [2024-11-22 01:48:10,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-22 01:48:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4677 transitions. [2024-11-22 01:48:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:48:10,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:10,258 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:10,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 01:48:10,458 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 [2024-11-22 01:48:10,460 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:10,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 500724357, now seen corresponding path program 1 times [2024-11-22 01:48:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557376743] [2024-11-22 01:48:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:48:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557376743] [2024-11-22 01:48:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557376743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:10,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656689779] [2024-11-22 01:48:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:10,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:10,587 INFO L87 Difference]: Start difference. First operand 2825 states and 4677 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, (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) [2024-11-22 01:48:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:10,791 INFO L93 Difference]: Finished difference Result 5646 states and 9422 transitions. [2024-11-22 01:48:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:48:10,792 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, (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 125 [2024-11-22 01:48:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:10,818 INFO L225 Difference]: With dead ends: 5646 [2024-11-22 01:48:10,819 INFO L226 Difference]: Without dead ends: 2839 [2024-11-22 01:48:10,844 INFO L431 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 [2024-11-22 01:48:10,845 INFO L432 NwaCegarLoop]: 868 mSDtfsCounter, 12 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:10,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2579 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2024-11-22 01:48:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2829. [2024-11-22 01:48:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2170 states have (on average 1.636405529953917) internal successors, (3551), 2258 states have internal predecessors, (3551), 525 states have call successors, (525), 132 states have call predecessors, (525), 133 states have return successors, (592), 516 states have call predecessors, (592), 521 states have call successors, (592) [2024-11-22 01:48:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4668 transitions. [2024-11-22 01:48:10,998 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4668 transitions. Word has length 125 [2024-11-22 01:48:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:11,001 INFO L471 AbstractCegarLoop]: Abstraction has 2829 states and 4668 transitions. [2024-11-22 01:48:11,001 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, (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) [2024-11-22 01:48:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4668 transitions. [2024-11-22 01:48:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:48:11,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:11,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:11,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 01:48:11,015 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:11,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1475453449, now seen corresponding path program 1 times [2024-11-22 01:48:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:11,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141516662] [2024-11-22 01:48:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:48:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141516662] [2024-11-22 01:48:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141516662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672985297] [2024-11-22 01:48:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:11,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:11,257 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) [2024-11-22 01:48:11,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:48:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:11,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:48:11,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:48:11,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672985297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:48:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995769783] [2024-11-22 01:48:11,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:11,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:48:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:48:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:11,771 INFO L87 Difference]: Start difference. First operand 2829 states and 4668 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:48:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:12,090 INFO L93 Difference]: Finished difference Result 8197 states and 13709 transitions. [2024-11-22 01:48:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:48:12,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-22 01:48:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:12,138 INFO L225 Difference]: With dead ends: 8197 [2024-11-22 01:48:12,138 INFO L226 Difference]: Without dead ends: 5387 [2024-11-22 01:48:12,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:12,159 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 720 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1699 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 [2024-11-22 01:48:12,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1699 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2024-11-22 01:48:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 5350. [2024-11-22 01:48:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 4090 states have (on average 1.6039119804400979) internal successors, (6560), 4264 states have internal predecessors, (6560), 998 states have call successors, (998), 258 states have call predecessors, (998), 261 states have return successors, (1229), 983 states have call predecessors, (1229), 992 states have call successors, (1229) [2024-11-22 01:48:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 8787 transitions. [2024-11-22 01:48:12,476 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 8787 transitions. Word has length 125 [2024-11-22 01:48:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:12,476 INFO L471 AbstractCegarLoop]: Abstraction has 5350 states and 8787 transitions. [2024-11-22 01:48:12,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:48:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 8787 transitions. [2024-11-22 01:48:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-22 01:48:12,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:12,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:12,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 01:48:12,685 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,SelfDestructingSolverStorable15 [2024-11-22 01:48:12,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:12,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash -983783463, now seen corresponding path program 1 times [2024-11-22 01:48:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193142677] [2024-11-22 01:48:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 01:48:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193142677] [2024-11-22 01:48:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193142677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775942344] [2024-11-22 01:48:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:12,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:12,917 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) [2024-11-22 01:48:12,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:48:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:13,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:48:13,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:48:13,280 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775942344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:48:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256682981] [2024-11-22 01:48:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:13,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:48:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:48:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:13,283 INFO L87 Difference]: Start difference. First operand 5350 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:48:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:13,781 INFO L93 Difference]: Finished difference Result 15936 states and 26494 transitions. [2024-11-22 01:48:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:48:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-22 01:48:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:13,867 INFO L225 Difference]: With dead ends: 15936 [2024-11-22 01:48:13,867 INFO L226 Difference]: Without dead ends: 10607 [2024-11-22 01:48:13,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:48:13,898 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 869 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1807 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 [2024-11-22 01:48:13,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1807 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:48:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2024-11-22 01:48:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10504. [2024-11-22 01:48:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 8056 states have (on average 1.6071251241310824) internal successors, (12947), 8384 states have internal predecessors, (12947), 1936 states have call successors, (1936), 498 states have call predecessors, (1936), 511 states have return successors, (2452), 1927 states have call predecessors, (2452), 1926 states have call successors, (2452) [2024-11-22 01:48:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 17335 transitions. [2024-11-22 01:48:14,589 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 17335 transitions. Word has length 127 [2024-11-22 01:48:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:14,590 INFO L471 AbstractCegarLoop]: Abstraction has 10504 states and 17335 transitions. [2024-11-22 01:48:14,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:48:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 17335 transitions. [2024-11-22 01:48:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-22 01:48:14,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:14,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:14,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:48:14,797 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,SelfDestructingSolverStorable16 [2024-11-22 01:48:14,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:14,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1994900713, now seen corresponding path program 1 times [2024-11-22 01:48:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933486722] [2024-11-22 01:48:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 01:48:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933486722] [2024-11-22 01:48:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933486722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009748497] [2024-11-22 01:48:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:15,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:48:15,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:48:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:15,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:48:15,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:48:15,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009748497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:15,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:15,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-22 01:48:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829695058] [2024-11-22 01:48:15,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:15,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:48:15,577 INFO L87 Difference]: Start difference. First operand 10504 states and 17335 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:48:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:16,761 INFO L93 Difference]: Finished difference Result 19807 states and 32784 transitions. [2024-11-22 01:48:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:48:16,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-11-22 01:48:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:16,833 INFO L225 Difference]: With dead ends: 19807 [2024-11-22 01:48:16,833 INFO L226 Difference]: Without dead ends: 9321 [2024-11-22 01:48:16,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:48:16,902 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 744 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:16,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 4258 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 01:48:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2024-11-22 01:48:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 9299. [2024-11-22 01:48:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9299 states, 7147 states have (on average 1.5963341262068) internal successors, (11409), 7422 states have internal predecessors, (11409), 1686 states have call successors, (1686), 454 states have call predecessors, (1686), 465 states have return successors, (2120), 1678 states have call predecessors, (2120), 1676 states have call successors, (2120) [2024-11-22 01:48:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 15215 transitions. [2024-11-22 01:48:17,500 INFO L78 Accepts]: Start accepts. Automaton has 9299 states and 15215 transitions. Word has length 127 [2024-11-22 01:48:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:17,501 INFO L471 AbstractCegarLoop]: Abstraction has 9299 states and 15215 transitions. [2024-11-22 01:48:17,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:48:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9299 states and 15215 transitions. [2024-11-22 01:48:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-22 01:48:17,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:17,507 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:17,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 01:48:17,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 01:48:17,708 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:17,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash -479394589, now seen corresponding path program 1 times [2024-11-22 01:48:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185394853] [2024-11-22 01:48:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:48:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185394853] [2024-11-22 01:48:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185394853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:48:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694263724] [2024-11-22 01:48:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:17,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:48:17,898 INFO L87 Difference]: Start difference. First operand 9299 states and 15215 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:48:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:19,093 INFO L93 Difference]: Finished difference Result 27843 states and 46759 transitions. [2024-11-22 01:48:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:48:19,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-11-22 01:48:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:19,254 INFO L225 Difference]: With dead ends: 27843 [2024-11-22 01:48:19,255 INFO L226 Difference]: Without dead ends: 18562 [2024-11-22 01:48:19,320 INFO L431 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 [2024-11-22 01:48:19,321 INFO L432 NwaCegarLoop]: 984 mSDtfsCounter, 867 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:19,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 4538 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 01:48:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18562 states. [2024-11-22 01:48:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18562 to 18461. [2024-11-22 01:48:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18461 states, 14200 states have (on average 1.5928169014084508) internal successors, (22618), 14741 states have internal predecessors, (22618), 3327 states have call successors, (3327), 902 states have call predecessors, (3327), 933 states have return successors, (4849), 3329 states have call predecessors, (4849), 3309 states have call successors, (4849) [2024-11-22 01:48:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18461 states to 18461 states and 30794 transitions. [2024-11-22 01:48:20,474 INFO L78 Accepts]: Start accepts. Automaton has 18461 states and 30794 transitions. Word has length 135 [2024-11-22 01:48:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:20,475 INFO L471 AbstractCegarLoop]: Abstraction has 18461 states and 30794 transitions. [2024-11-22 01:48:20,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:48:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18461 states and 30794 transitions. [2024-11-22 01:48:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-22 01:48:20,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:20,483 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:20,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 01:48:20,484 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:20,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:20,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2052442483, now seen corresponding path program 1 times [2024-11-22 01:48:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218822527] [2024-11-22 01:48:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:48:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218822527] [2024-11-22 01:48:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218822527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:20,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:20,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917791228] [2024-11-22 01:48:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:20,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:20,626 INFO L87 Difference]: Start difference. First operand 18461 states and 30794 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 01:48:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:21,671 INFO L93 Difference]: Finished difference Result 37048 states and 62819 transitions. [2024-11-22 01:48:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:48:21,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-11-22 01:48:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:21,845 INFO L225 Difference]: With dead ends: 37048 [2024-11-22 01:48:21,845 INFO L226 Difference]: Without dead ends: 18605 [2024-11-22 01:48:22,002 INFO L431 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 [2024-11-22 01:48:22,004 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 12 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:22,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2573 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18605 states. [2024-11-22 01:48:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18605 to 18541. [2024-11-22 01:48:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18541 states, 14272 states have (on average 1.5903867713004485) internal successors, (22698), 14797 states have internal predecessors, (22698), 3327 states have call successors, (3327), 934 states have call predecessors, (3327), 941 states have return successors, (4801), 3321 states have call predecessors, (4801), 3309 states have call successors, (4801) [2024-11-22 01:48:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18541 states to 18541 states and 30826 transitions. [2024-11-22 01:48:23,257 INFO L78 Accepts]: Start accepts. Automaton has 18541 states and 30826 transitions. Word has length 136 [2024-11-22 01:48:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:23,260 INFO L471 AbstractCegarLoop]: Abstraction has 18541 states and 30826 transitions. [2024-11-22 01:48:23,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 01:48:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 18541 states and 30826 transitions. [2024-11-22 01:48:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 01:48:23,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:23,266 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:23,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 01:48:23,266 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:23,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1596649821, now seen corresponding path program 1 times [2024-11-22 01:48:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719137611] [2024-11-22 01:48:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:48:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719137611] [2024-11-22 01:48:23,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719137611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:23,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:23,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:48:23,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697860357] [2024-11-22 01:48:23,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:23,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:23,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:48:23,726 INFO L87 Difference]: Start difference. First operand 18541 states and 30826 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-22 01:48:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:25,779 INFO L93 Difference]: Finished difference Result 55709 states and 96154 transitions. [2024-11-22 01:48:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:48:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-22 01:48:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:26,283 INFO L225 Difference]: With dead ends: 55709 [2024-11-22 01:48:26,283 INFO L226 Difference]: Without dead ends: 37186 [2024-11-22 01:48:26,381 INFO L431 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 [2024-11-22 01:48:26,382 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 865 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:26,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 4389 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:48:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37186 states. [2024-11-22 01:48:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37186 to 37021. [2024-11-22 01:48:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37021 states, 28507 states have (on average 1.5869435577226647) internal successors, (45239), 29548 states have internal predecessors, (45239), 6620 states have call successors, (6620), 1862 states have call predecessors, (6620), 1893 states have return successors, (11475), 6634 states have call predecessors, (11475), 6586 states have call successors, (11475) [2024-11-22 01:48:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37021 states to 37021 states and 63334 transitions. [2024-11-22 01:48:28,798 INFO L78 Accepts]: Start accepts. Automaton has 37021 states and 63334 transitions. Word has length 145 [2024-11-22 01:48:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:28,799 INFO L471 AbstractCegarLoop]: Abstraction has 37021 states and 63334 transitions. [2024-11-22 01:48:28,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-22 01:48:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37021 states and 63334 transitions. [2024-11-22 01:48:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 01:48:28,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:28,805 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:28,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 01:48:28,805 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:28,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1127620843, now seen corresponding path program 1 times [2024-11-22 01:48:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:28,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5191561] [2024-11-22 01:48:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-22 01:48:28,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:28,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5191561] [2024-11-22 01:48:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5191561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:28,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767121120] [2024-11-22 01:48:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:28,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:28,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:28,907 INFO L87 Difference]: Start difference. First operand 37021 states and 63334 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-22 01:48:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:31,189 INFO L93 Difference]: Finished difference Result 74312 states and 130356 transitions. [2024-11-22 01:48:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:48:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-22 01:48:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:31,524 INFO L225 Difference]: With dead ends: 74312 [2024-11-22 01:48:31,524 INFO L226 Difference]: Without dead ends: 37309 [2024-11-22 01:48:32,043 INFO L431 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 [2024-11-22 01:48:32,044 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 11 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:32,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2573 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37309 states. [2024-11-22 01:48:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37309 to 37181. [2024-11-22 01:48:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37181 states, 28651 states have (on average 1.5845520226170116) internal successors, (45399), 29692 states have internal predecessors, (45399), 6620 states have call successors, (6620), 1894 states have call predecessors, (6620), 1909 states have return successors, (11403), 6618 states have call predecessors, (11403), 6586 states have call successors, (11403) [2024-11-22 01:48:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37181 states to 37181 states and 63422 transitions. [2024-11-22 01:48:33,987 INFO L78 Accepts]: Start accepts. Automaton has 37181 states and 63422 transitions. Word has length 146 [2024-11-22 01:48:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:33,988 INFO L471 AbstractCegarLoop]: Abstraction has 37181 states and 63422 transitions. [2024-11-22 01:48:33,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-22 01:48:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 37181 states and 63422 transitions. [2024-11-22 01:48:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 01:48:33,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:33,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:33,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 01:48:33,995 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:33,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -800019741, now seen corresponding path program 1 times [2024-11-22 01:48:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420906742] [2024-11-22 01:48:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-22 01:48:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420906742] [2024-11-22 01:48:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420906742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:34,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:34,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:48:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475818881] [2024-11-22 01:48:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:48:34,476 INFO L87 Difference]: Start difference. First operand 37181 states and 63422 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 01:48:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:38,642 INFO L93 Difference]: Finished difference Result 111865 states and 201738 transitions. [2024-11-22 01:48:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:48:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-11-22 01:48:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:39,331 INFO L225 Difference]: With dead ends: 111865 [2024-11-22 01:48:39,331 INFO L226 Difference]: Without dead ends: 74702 [2024-11-22 01:48:39,844 INFO L431 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 [2024-11-22 01:48:39,844 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 861 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:39,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 4361 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 01:48:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74702 states. [2024-11-22 01:48:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74702 to 74409. [2024-11-22 01:48:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74409 states, 57346 states have (on average 1.581976075053186) internal successors, (90720), 59419 states have internal predecessors, (90720), 13217 states have call successors, (13217), 3782 states have call predecessors, (13217), 3845 states have return successors, (28465), 13255 states have call predecessors, (28465), 13151 states have call successors, (28465) [2024-11-22 01:48:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74409 states to 74409 states and 132402 transitions. [2024-11-22 01:48:43,890 INFO L78 Accepts]: Start accepts. Automaton has 74409 states and 132402 transitions. Word has length 156 [2024-11-22 01:48:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:43,891 INFO L471 AbstractCegarLoop]: Abstraction has 74409 states and 132402 transitions. [2024-11-22 01:48:43,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 01:48:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 74409 states and 132402 transitions. [2024-11-22 01:48:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 01:48:43,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:43,897 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:43,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 01:48:43,897 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:43,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1001896675, now seen corresponding path program 1 times [2024-11-22 01:48:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435004202] [2024-11-22 01:48:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-22 01:48:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435004202] [2024-11-22 01:48:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435004202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:48:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:48:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399016514] [2024-11-22 01:48:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:44,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:48:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:48:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:48:44,028 INFO L87 Difference]: Start difference. First operand 74409 states and 132402 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 01:48:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:48:50,041 INFO L93 Difference]: Finished difference Result 149440 states and 276273 transitions. [2024-11-22 01:48:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:48:50,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-11-22 01:48:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:48:50,701 INFO L225 Difference]: With dead ends: 149440 [2024-11-22 01:48:50,701 INFO L226 Difference]: Without dead ends: 75049 [2024-11-22 01:48:51,850 INFO L431 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 [2024-11-22 01:48:51,851 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 10 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:48:51,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2573 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:48:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75049 states. [2024-11-22 01:48:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75049 to 74793. [2024-11-22 01:48:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74793 states, 57698 states have (on average 1.5789802072862145) internal successors, (91104), 59771 states have internal predecessors, (91104), 13217 states have call successors, (13217), 3846 states have call predecessors, (13217), 3877 states have return successors, (28385), 13223 states have call predecessors, (28385), 13151 states have call successors, (28385) [2024-11-22 01:48:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74793 states to 74793 states and 132706 transitions. [2024-11-22 01:48:56,048 INFO L78 Accepts]: Start accepts. Automaton has 74793 states and 132706 transitions. Word has length 157 [2024-11-22 01:48:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:48:56,051 INFO L471 AbstractCegarLoop]: Abstraction has 74793 states and 132706 transitions. [2024-11-22 01:48:56,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 01:48:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 74793 states and 132706 transitions. [2024-11-22 01:48:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-22 01:48:56,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:48:56,068 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:48:56,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 01:48:56,069 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:48:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:48:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -488156973, now seen corresponding path program 1 times [2024-11-22 01:48:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:48:56,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037099844] [2024-11-22 01:48:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:48:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 01:48:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:48:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037099844] [2024-11-22 01:48:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037099844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:48:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426306621] [2024-11-22 01:48:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:48:56,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:48:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:48:56,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:48:56,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:48:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:48:56,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:48:56,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:48:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 01:48:56,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:48:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426306621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:48:56,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:48:56,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-22 01:48:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257318671] [2024-11-22 01:48:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:48:56,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:48:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:48:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:48:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:48:56,780 INFO L87 Difference]: Start difference. First operand 74793 states and 132706 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-22 01:49:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:03,906 INFO L93 Difference]: Finished difference Result 182415 states and 337311 transitions. [2024-11-22 01:49:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:03,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2024-11-22 01:49:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:04,746 INFO L225 Difference]: With dead ends: 182415 [2024-11-22 01:49:04,746 INFO L226 Difference]: Without dead ends: 107592 [2024-11-22 01:49:05,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:49:05,724 INFO L432 NwaCegarLoop]: 875 mSDtfsCounter, 864 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:05,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 3936 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 01:49:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107592 states.