./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB --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 0.3.0-dev-d790fec [2024-11-27 20:08:56,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:08:56,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:08:56,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:08:56,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:08:56,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:08:56,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:08:56,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:08:56,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:08:56,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:08:56,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:08:56,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:08:56,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:08:56,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:08:56,988 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:08:56,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:08:56,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:08:56,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:08:56,990 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:56,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:56,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:56,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:08:56,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:08:56,992 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB 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 [2024-11-27 20:08:57,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:08:57,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:08:57,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:08:57,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:08:57,399 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:08:57,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-11-27 20:09:01,005 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d619fb07/91b0c6dcac0e490cacda3d8490483430/FLAGa2d773e74 [2024-11-27 20:09:01,585 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:09:01,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-11-27 20:09:01,629 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d619fb07/91b0c6dcac0e490cacda3d8490483430/FLAGa2d773e74 [2024-11-27 20:09:01,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d619fb07/91b0c6dcac0e490cacda3d8490483430 [2024-11-27 20:09:01,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:09:01,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:09:01,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:01,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:09:01,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:09:01,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:01" (1/1) ... [2024-11-27 20:09:01,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:01, skipping insertion in model container [2024-11-27 20:09:01,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:01" (1/1) ... [2024-11-27 20:09:01,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:09:02,585 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2024-11-27 20:09:02,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:02,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:09:02,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-27 20:09:02,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2024-11-27 20:09:02,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [423] [2024-11-27 20:09:02,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [789] [2024-11-27 20:09:02,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2329] [2024-11-27 20:09:02,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2447] [2024-11-27 20:09:02,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2482] [2024-11-27 20:09:02,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2669] [2024-11-27 20:09:02,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2678] [2024-11-27 20:09:02,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2769] [2024-11-27 20:09:02,822 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2024-11-27 20:09:02,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:02,886 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:09:02,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02 WrapperNode [2024-11-27 20:09:02,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:02,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:02,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:09:02,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:09:02,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:02,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,027 INFO L138 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1089 [2024-11-27 20:09:03,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:03,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:09:03,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:09:03,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:09:03,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,091 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]. [2024-11-27 20:09:03,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,123 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:09:03,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:09:03,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:09:03,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:09:03,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (1/1) ... [2024-11-27 20:09:03,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:09:03,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:03,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:09:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:09:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:09:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-27 20:09:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-27 20:09:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 20:09:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 20:09:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-27 20:09:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-27 20:09:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 20:09:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 20:09:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-27 20:09:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-27 20:09:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 20:09:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 20:09:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-27 20:09:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 20:09:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 20:09:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 20:09:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 20:09:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 20:09:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-27 20:09:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-27 20:09:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 20:09:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 20:09:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 20:09:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 20:09:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 20:09:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 20:09:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 20:09:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 20:09:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 20:09:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 20:09:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:09:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:09:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 20:09:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 20:09:03,631 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:09:03,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:09:05,817 INFO L? ?]: Removed 457 outVars from TransFormulas that were not future-live. [2024-11-27 20:09:05,817 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:09:05,855 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:09:05,856 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:09:05,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:05 BoogieIcfgContainer [2024-11-27 20:09:05,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:09:05,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:09:05,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:09:05,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:09:05,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:09:01" (1/3) ... [2024-11-27 20:09:05,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6253f5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:05, skipping insertion in model container [2024-11-27 20:09:05,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:02" (2/3) ... [2024-11-27 20:09:05,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6253f5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:05, skipping insertion in model container [2024-11-27 20:09:05,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:05" (3/3) ... [2024-11-27 20:09:05,869 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2024-11-27 20:09:05,885 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:09:05,887 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product19.cil.c that has 28 procedures, 588 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:09:05,996 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:09:06,009 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;@14c560, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:09:06,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:09:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 469 states have internal predecessors, (753), 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) [2024-11-27 20:09:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 20:09:06,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:06,047 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:06,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:06,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash 428179115, now seen corresponding path program 1 times [2024-11-27 20:09:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:06,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54943192] [2024-11-27 20:09:06,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:06,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54943192] [2024-11-27 20:09:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54943192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:07,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:07,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:09:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497957715] [2024-11-27 20:09:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:07,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:09:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:07,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:09:07,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:07,362 INFO L87 Difference]: Start difference. First operand has 588 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 469 states have internal predecessors, (753), 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) [2024-11-27 20:09:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:07,828 INFO L93 Difference]: Finished difference Result 1173 states and 1950 transitions. [2024-11-27 20:09:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:07,831 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 [2024-11-27 20:09:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:07,864 INFO L225 Difference]: With dead ends: 1173 [2024-11-27 20:09:07,864 INFO L226 Difference]: Without dead ends: 593 [2024-11-27 20:09:07,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:09:07,880 INFO L435 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:07,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5627 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-27 20:09:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2024-11-27 20:09:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 454 states have (on average 1.6607929515418502) internal successors, (754), 472 states have internal predecessors, (754), 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) [2024-11-27 20:09:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 971 transitions. [2024-11-27 20:09:08,019 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 971 transitions. Word has length 113 [2024-11-27 20:09:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:08,019 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 971 transitions. [2024-11-27 20:09:08,020 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) [2024-11-27 20:09:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 971 transitions. [2024-11-27 20:09:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 20:09:08,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:08,030 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:08,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:09:08,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:08,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash 976898526, now seen corresponding path program 1 times [2024-11-27 20:09:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:08,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217168106] [2024-11-27 20:09:08,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:08,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217168106] [2024-11-27 20:09:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217168106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:08,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:09:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938305898] [2024-11-27 20:09:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:08,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:09:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:08,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:09:08,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:08,580 INFO L87 Difference]: Start difference. First operand 591 states and 971 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) [2024-11-27 20:09:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:08,828 INFO L93 Difference]: Finished difference Result 1177 states and 1945 transitions. [2024-11-27 20:09:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:08,829 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 [2024-11-27 20:09:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:08,839 INFO L225 Difference]: With dead ends: 1177 [2024-11-27 20:09:08,840 INFO L226 Difference]: Without dead ends: 602 [2024-11-27 20:09:08,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:09:08,846 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 90 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-27 20:09:08,848 INFO L436 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] [2024-11-27 20:09:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-27 20:09:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 591. [2024-11-27 20:09:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 454 states have (on average 1.6607929515418502) internal successors, (754), 472 states have internal predecessors, (754), 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) [2024-11-27 20:09:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 971 transitions. [2024-11-27 20:09:08,934 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 971 transitions. Word has length 114 [2024-11-27 20:09:08,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:08,936 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 971 transitions. [2024-11-27 20:09:08,936 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) [2024-11-27 20:09:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 971 transitions. [2024-11-27 20:09:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 20:09:08,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:08,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:08,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:09:08,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:08,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -940156742, now seen corresponding path program 1 times [2024-11-27 20:09:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784703383] [2024-11-27 20:09:08,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:09,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784703383] [2024-11-27 20:09:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784703383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597375158] [2024-11-27 20:09:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:09,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:09,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:09,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:09,254 INFO L87 Difference]: Start difference. First operand 591 states and 971 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) [2024-11-27 20:09:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:09,378 INFO L93 Difference]: Finished difference Result 1164 states and 1923 transitions. [2024-11-27 20:09:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:09:09,379 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 [2024-11-27 20:09:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:09,386 INFO L225 Difference]: With dead ends: 1164 [2024-11-27 20:09:09,387 INFO L226 Difference]: Without dead ends: 561 [2024-11-27 20:09:09,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:09,393 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 14 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2818 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 [2024-11-27 20:09:09,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2818 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-27 20:09:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-27 20:09:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 443 states have internal predecessors, (702), 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) [2024-11-27 20:09:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 915 transitions. [2024-11-27 20:09:09,444 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 915 transitions. Word has length 114 [2024-11-27 20:09:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:09,445 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 915 transitions. [2024-11-27 20:09:09,445 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) [2024-11-27 20:09:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 915 transitions. [2024-11-27 20:09:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 20:09:09,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:09,449 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:09,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:09:09,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:09,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1155706321, now seen corresponding path program 1 times [2024-11-27 20:09:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114598067] [2024-11-27 20:09:09,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:09,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:09,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114598067] [2024-11-27 20:09:09,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114598067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:09,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:09,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:09:09,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857444438] [2024-11-27 20:09:09,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:09,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:09:09,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:09,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:09:09,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:09,898 INFO L87 Difference]: Start difference. First operand 561 states and 915 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) [2024-11-27 20:09:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:10,047 INFO L93 Difference]: Finished difference Result 1115 states and 1829 transitions. [2024-11-27 20:09:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:10,048 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 [2024-11-27 20:09:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:10,058 INFO L225 Difference]: With dead ends: 1115 [2024-11-27 20:09:10,059 INFO L226 Difference]: Without dead ends: 555 [2024-11-27 20:09:10,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:09:10,064 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 63 mSDsluCounter, 4467 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5372 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 [2024-11-27 20:09:10,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5372 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-27 20:09:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2024-11-27 20:09:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 421 states have (on average 1.6365795724465557) internal successors, (689), 437 states have internal predecessors, (689), 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) [2024-11-27 20:09:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 902 transitions. [2024-11-27 20:09:10,127 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 902 transitions. Word has length 115 [2024-11-27 20:09:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:10,129 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 902 transitions. [2024-11-27 20:09:10,129 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) [2024-11-27 20:09:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 902 transitions. [2024-11-27 20:09:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:09:10,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:10,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:10,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:09:10,135 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:10,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -510017246, now seen corresponding path program 1 times [2024-11-27 20:09:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444718223] [2024-11-27 20:09:10,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:10,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444718223] [2024-11-27 20:09:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444718223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:10,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:10,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:09:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681989789] [2024-11-27 20:09:10,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:10,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:09:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:10,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:09:10,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:10,557 INFO L87 Difference]: Start difference. First operand 555 states and 902 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) [2024-11-27 20:09:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:10,727 INFO L93 Difference]: Finished difference Result 1103 states and 1803 transitions. [2024-11-27 20:09:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:10,727 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 [2024-11-27 20:09:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:10,733 INFO L225 Difference]: With dead ends: 1103 [2024-11-27 20:09:10,734 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:10,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:09:10,740 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 49 mSDsluCounter, 4419 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:10,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5312 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6289156626506025) internal successors, (676), 431 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) [2024-11-27 20:09:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 889 transitions. [2024-11-27 20:09:10,799 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 889 transitions. Word has length 116 [2024-11-27 20:09:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:10,800 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 889 transitions. [2024-11-27 20:09:10,800 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) [2024-11-27 20:09:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 889 transitions. [2024-11-27 20:09:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:09:10,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:10,806 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:10,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:09:10,808 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:10,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 237643427, now seen corresponding path program 1 times [2024-11-27 20:09:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154919512] [2024-11-27 20:09:10,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154919512] [2024-11-27 20:09:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154919512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:11,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:09:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477564258] [2024-11-27 20:09:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:11,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:09:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:11,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:09:11,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:11,162 INFO L87 Difference]: Start difference. First operand 549 states and 889 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) [2024-11-27 20:09:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:11,275 INFO L93 Difference]: Finished difference Result 1091 states and 1777 transitions. [2024-11-27 20:09:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:11,275 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 [2024-11-27 20:09:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:11,281 INFO L225 Difference]: With dead ends: 1091 [2024-11-27 20:09:11,282 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:11,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:09:11,288 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 24 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5264 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 [2024-11-27 20:09:11,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5264 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6265060240963856) internal successors, (675), 431 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) [2024-11-27 20:09:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 888 transitions. [2024-11-27 20:09:11,331 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 888 transitions. Word has length 116 [2024-11-27 20:09:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:11,333 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 888 transitions. [2024-11-27 20:09:11,333 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) [2024-11-27 20:09:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 888 transitions. [2024-11-27 20:09:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 20:09:11,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:11,338 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:11,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:09:11,339 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:11,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 363437491, now seen corresponding path program 1 times [2024-11-27 20:09:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715446666] [2024-11-27 20:09:11,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:11,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715446666] [2024-11-27 20:09:11,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715446666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918742994] [2024-11-27 20:09:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:11,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:11,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:11,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:11,577 INFO L87 Difference]: Start difference. First operand 549 states and 888 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) [2024-11-27 20:09:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:11,675 INFO L93 Difference]: Finished difference Result 1082 states and 1762 transitions. [2024-11-27 20:09:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:11,676 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 [2024-11-27 20:09:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:11,682 INFO L225 Difference]: With dead ends: 1082 [2024-11-27 20:09:11,683 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:11,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:11,687 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 15 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2604 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 [2024-11-27 20:09:11,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2604 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6240963855421686) internal successors, (674), 431 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) [2024-11-27 20:09:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 887 transitions. [2024-11-27 20:09:11,732 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 887 transitions. Word has length 117 [2024-11-27 20:09:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:11,732 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 887 transitions. [2024-11-27 20:09:11,733 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) [2024-11-27 20:09:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 887 transitions. [2024-11-27 20:09:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 20:09:11,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:11,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:11,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:09:11,738 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:11,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1887278114, now seen corresponding path program 1 times [2024-11-27 20:09:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530542066] [2024-11-27 20:09:11,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:11,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:11,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530542066] [2024-11-27 20:09:11,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530542066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:11,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:11,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546208881] [2024-11-27 20:09:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:11,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:11,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:11,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:11,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:11,957 INFO L87 Difference]: Start difference. First operand 549 states and 887 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) [2024-11-27 20:09:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:12,055 INFO L93 Difference]: Finished difference Result 1082 states and 1760 transitions. [2024-11-27 20:09:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:12,056 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 [2024-11-27 20:09:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:12,061 INFO L225 Difference]: With dead ends: 1082 [2024-11-27 20:09:12,062 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:12,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:12,067 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 14 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2606 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 [2024-11-27 20:09:12,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2606 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:12,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.621686746987952) internal successors, (673), 431 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) [2024-11-27 20:09:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 886 transitions. [2024-11-27 20:09:12,123 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 886 transitions. Word has length 118 [2024-11-27 20:09:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:12,123 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 886 transitions. [2024-11-27 20:09:12,123 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) [2024-11-27 20:09:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 886 transitions. [2024-11-27 20:09:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:09:12,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:12,128 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:12,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:09:12,128 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:12,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 130453272, now seen corresponding path program 1 times [2024-11-27 20:09:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548426371] [2024-11-27 20:09:12,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:12,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548426371] [2024-11-27 20:09:12,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548426371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:12,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:12,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083224182] [2024-11-27 20:09:12,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:12,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:12,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:12,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:12,342 INFO L87 Difference]: Start difference. First operand 549 states and 886 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) [2024-11-27 20:09:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:12,431 INFO L93 Difference]: Finished difference Result 1082 states and 1758 transitions. [2024-11-27 20:09:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:12,431 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 [2024-11-27 20:09:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:12,438 INFO L225 Difference]: With dead ends: 1082 [2024-11-27 20:09:12,438 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:12,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:12,445 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 13 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2608 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 [2024-11-27 20:09:12,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2608 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.619277108433735) internal successors, (672), 431 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) [2024-11-27 20:09:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 885 transitions. [2024-11-27 20:09:12,484 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 885 transitions. Word has length 119 [2024-11-27 20:09:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:12,485 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 885 transitions. [2024-11-27 20:09:12,485 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) [2024-11-27 20:09:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 885 transitions. [2024-11-27 20:09:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 20:09:12,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:12,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:12,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:09:12,489 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:12,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -247785881, now seen corresponding path program 1 times [2024-11-27 20:09:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075806264] [2024-11-27 20:09:12,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:12,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075806264] [2024-11-27 20:09:12,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075806264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:12,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:12,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802911212] [2024-11-27 20:09:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:12,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:12,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:12,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:12,730 INFO L87 Difference]: Start difference. First operand 549 states and 885 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) [2024-11-27 20:09:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:12,834 INFO L93 Difference]: Finished difference Result 1082 states and 1756 transitions. [2024-11-27 20:09:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:12,835 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 [2024-11-27 20:09:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:12,842 INFO L225 Difference]: With dead ends: 1082 [2024-11-27 20:09:12,842 INFO L226 Difference]: Without dead ends: 549 [2024-11-27 20:09:12,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:12,849 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 12 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2610 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 [2024-11-27 20:09:12,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2610 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-27 20:09:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-27 20:09:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.616867469879518) internal successors, (671), 431 states have internal predecessors, (671), 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) [2024-11-27 20:09:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 884 transitions. [2024-11-27 20:09:12,896 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 884 transitions. Word has length 120 [2024-11-27 20:09:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:12,897 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 884 transitions. [2024-11-27 20:09:12,897 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) [2024-11-27 20:09:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 884 transitions. [2024-11-27 20:09:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 20:09:12,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:12,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:12,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:09:12,904 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:12,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -839541635, now seen corresponding path program 1 times [2024-11-27 20:09:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444889326] [2024-11-27 20:09:12,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:09:13,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:13,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444889326] [2024-11-27 20:09:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444889326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:13,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078898534] [2024-11-27 20:09:13,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:13,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:13,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:13,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:09:13,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:09:14,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078898534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:09:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334071995] [2024-11-27 20:09:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:14,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:14,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:14,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:14,181 INFO L87 Difference]: Start difference. First operand 549 states and 884 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) [2024-11-27 20:09:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:14,301 INFO L93 Difference]: Finished difference Result 1558 states and 2540 transitions. [2024-11-27 20:09:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:14,302 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 [2024-11-27 20:09:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:14,312 INFO L225 Difference]: With dead ends: 1558 [2024-11-27 20:09:14,312 INFO L226 Difference]: Without dead ends: 1027 [2024-11-27 20:09:14,317 INFO L434 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 [2024-11-27 20:09:14,317 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 807 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2352 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 [2024-11-27 20:09:14,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-27 20:09:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1012. [2024-11-27 20:09:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 772 states have (on average 1.6295336787564767) internal successors, (1258), 803 states have internal predecessors, (1258), 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) [2024-11-27 20:09:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1642 transitions. [2024-11-27 20:09:14,391 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1642 transitions. Word has length 121 [2024-11-27 20:09:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:14,391 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1642 transitions. [2024-11-27 20:09:14,392 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) [2024-11-27 20:09:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1642 transitions. [2024-11-27 20:09:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 20:09:14,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:14,398 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:14,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:09:14,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:14,603 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:14,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash -59480569, now seen corresponding path program 1 times [2024-11-27 20:09:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219774663] [2024-11-27 20:09:14,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:09:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219774663] [2024-11-27 20:09:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219774663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095067525] [2024-11-27 20:09:15,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:15,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:15,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:15,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:09:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:15,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:09:15,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:09:15,798 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095067525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:15,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:15,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:09:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866837395] [2024-11-27 20:09:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:15,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:15,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:15,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:15,801 INFO L87 Difference]: Start difference. First operand 1012 states and 1642 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) [2024-11-27 20:09:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:15,988 INFO L93 Difference]: Finished difference Result 2484 states and 4058 transitions. [2024-11-27 20:09:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:15,989 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 [2024-11-27 20:09:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:16,007 INFO L225 Difference]: With dead ends: 2484 [2024-11-27 20:09:16,007 INFO L226 Difference]: Without dead ends: 1490 [2024-11-27 20:09:16,014 INFO L434 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 [2024-11-27 20:09:16,016 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 810 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1659 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 [2024-11-27 20:09:16,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1659 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-11-27 20:09:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1442. [2024-11-27 20:09:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1102 states have (on average 1.6415607985480944) internal successors, (1809), 1148 states have internal predecessors, (1809), 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) [2024-11-27 20:09:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2358 transitions. [2024-11-27 20:09:16,136 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2358 transitions. Word has length 122 [2024-11-27 20:09:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:16,137 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 2358 transitions. [2024-11-27 20:09:16,138 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) [2024-11-27 20:09:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2358 transitions. [2024-11-27 20:09:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 20:09:16,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:16,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:16,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:09:16,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:09:16,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:16,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1528991517, now seen corresponding path program 1 times [2024-11-27 20:09:16,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:16,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021901053] [2024-11-27 20:09:16,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:16,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:16,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021901053] [2024-11-27 20:09:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021901053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:16,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:16,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:09:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049203482] [2024-11-27 20:09:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:16,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:16,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:16,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:09:16,660 INFO L87 Difference]: Start difference. First operand 1442 states and 2358 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) [2024-11-27 20:09:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:17,780 INFO L93 Difference]: Finished difference Result 4262 states and 7075 transitions. [2024-11-27 20:09:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:09:17,781 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 [2024-11-27 20:09:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:17,813 INFO L225 Difference]: With dead ends: 4262 [2024-11-27 20:09:17,813 INFO L226 Difference]: Without dead ends: 2838 [2024-11-27 20:09:17,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:17,830 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 873 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:17,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 4543 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:09:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2024-11-27 20:09:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2791. [2024-11-27 20:09:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2137 states have (on average 1.6448291998128217) internal successors, (3515), 2225 states have internal predecessors, (3515), 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) [2024-11-27 20:09:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4633 transitions. [2024-11-27 20:09:18,123 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4633 transitions. Word has length 124 [2024-11-27 20:09:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:18,124 INFO L471 AbstractCegarLoop]: Abstraction has 2791 states and 4633 transitions. [2024-11-27 20:09:18,124 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) [2024-11-27 20:09:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4633 transitions. [2024-11-27 20:09:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 20:09:18,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:18,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:18,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:09:18,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:18,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1063184503, now seen corresponding path program 1 times [2024-11-27 20:09:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:18,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496565949] [2024-11-27 20:09:18,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:18,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:09:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496565949] [2024-11-27 20:09:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496565949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:18,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:18,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689567872] [2024-11-27 20:09:18,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:18,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:18,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:18,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:18,363 INFO L87 Difference]: Start difference. First operand 2791 states and 4633 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) [2024-11-27 20:09:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:18,690 INFO L93 Difference]: Finished difference Result 5578 states and 9330 transitions. [2024-11-27 20:09:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:09:18,691 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 [2024-11-27 20:09:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:18,720 INFO L225 Difference]: With dead ends: 5578 [2024-11-27 20:09:18,720 INFO L226 Difference]: Without dead ends: 2805 [2024-11-27 20:09:18,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:18,749 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 12 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2576 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 [2024-11-27 20:09:18,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2576 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2024-11-27 20:09:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2795. [2024-11-27 20:09:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2140 states have (on average 1.6434579439252337) internal successors, (3517), 2228 states have internal predecessors, (3517), 521 states have call successors, (521), 132 states have call predecessors, (521), 133 states have return successors, (588), 512 states have call predecessors, (588), 517 states have call successors, (588) [2024-11-27 20:09:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4626 transitions. [2024-11-27 20:09:18,988 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4626 transitions. Word has length 125 [2024-11-27 20:09:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:18,988 INFO L471 AbstractCegarLoop]: Abstraction has 2795 states and 4626 transitions. [2024-11-27 20:09:18,989 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) [2024-11-27 20:09:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4626 transitions. [2024-11-27 20:09:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 20:09:18,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:18,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:18,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:09:18,998 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:18,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash -120085253, now seen corresponding path program 1 times [2024-11-27 20:09:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787126996] [2024-11-27 20:09:18,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:09:19,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:19,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787126996] [2024-11-27 20:09:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787126996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327762851] [2024-11-27 20:09:19,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:19,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:19,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:19,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:09:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:19,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:09:19,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:09:20,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327762851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:20,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:09:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531405528] [2024-11-27 20:09:20,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:20,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:20,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:20,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:20,169 INFO L87 Difference]: Start difference. First operand 2795 states and 4626 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) [2024-11-27 20:09:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:20,777 INFO L93 Difference]: Finished difference Result 8095 states and 13583 transitions. [2024-11-27 20:09:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:20,778 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 [2024-11-27 20:09:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:20,829 INFO L225 Difference]: With dead ends: 8095 [2024-11-27 20:09:20,829 INFO L226 Difference]: Without dead ends: 5319 [2024-11-27 20:09:20,855 INFO L434 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 [2024-11-27 20:09:20,855 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 718 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:20,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1697 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:09:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2024-11-27 20:09:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5282. [2024-11-27 20:09:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4030 states have (on average 1.6109181141439206) internal successors, (6492), 4204 states have internal predecessors, (6492), 990 states have call successors, (990), 258 states have call predecessors, (990), 261 states have return successors, (1221), 975 states have call predecessors, (1221), 984 states have call successors, (1221) [2024-11-27 20:09:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 8703 transitions. [2024-11-27 20:09:21,378 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 8703 transitions. Word has length 125 [2024-11-27 20:09:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:21,382 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 8703 transitions. [2024-11-27 20:09:21,382 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) [2024-11-27 20:09:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 8703 transitions. [2024-11-27 20:09:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 20:09:21,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:21,398 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:21,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:09:21,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:09:21,600 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:21,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1466870307, now seen corresponding path program 1 times [2024-11-27 20:09:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:21,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472731629] [2024-11-27 20:09:21,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:09:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:22,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472731629] [2024-11-27 20:09:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472731629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:22,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312286544] [2024-11-27 20:09:22,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:22,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:22,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:22,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:09:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:22,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:09:22,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 20:09:22,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:22,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312286544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:22,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:22,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:09:22,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529621813] [2024-11-27 20:09:22,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:22,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:22,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:22,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:22,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:09:22,635 INFO L87 Difference]: Start difference. First operand 5282 states and 8703 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) [2024-11-27 20:09:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:23,314 INFO L93 Difference]: Finished difference Result 15732 states and 26242 transitions. [2024-11-27 20:09:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:23,315 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 [2024-11-27 20:09:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:23,482 INFO L225 Difference]: With dead ends: 15732 [2024-11-27 20:09:23,482 INFO L226 Difference]: Without dead ends: 10471 [2024-11-27 20:09:23,534 INFO L434 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 [2024-11-27 20:09:23,535 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 869 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:23,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1802 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2024-11-27 20:09:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 10368. [2024-11-27 20:09:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7936 states have (on average 1.614289314516129) internal successors, (12811), 8264 states have internal predecessors, (12811), 1920 states have call successors, (1920), 498 states have call predecessors, (1920), 511 states have return successors, (2436), 1911 states have call predecessors, (2436), 1910 states have call successors, (2436) [2024-11-27 20:09:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 17167 transitions. [2024-11-27 20:09:24,470 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 17167 transitions. Word has length 127 [2024-11-27 20:09:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:24,470 INFO L471 AbstractCegarLoop]: Abstraction has 10368 states and 17167 transitions. [2024-11-27 20:09:24,472 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) [2024-11-27 20:09:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 17167 transitions. [2024-11-27 20:09:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 20:09:24,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:24,481 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:24,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:09:24,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:09:24,682 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:24,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1816979739, now seen corresponding path program 1 times [2024-11-27 20:09:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:24,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774516732] [2024-11-27 20:09:24,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:09:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774516732] [2024-11-27 20:09:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774516732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597602330] [2024-11-27 20:09:24,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:24,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:24,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:24,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:24,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:09:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:25,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:09:25,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:09:25,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597602330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 20:09:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541017990] [2024-11-27 20:09:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:25,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:25,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:25,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:09:25,656 INFO L87 Difference]: Start difference. First operand 10368 states and 17167 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) [2024-11-27 20:09:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:27,508 INFO L93 Difference]: Finished difference Result 19593 states and 32522 transitions. [2024-11-27 20:09:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:09:27,509 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 [2024-11-27 20:09:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:27,643 INFO L225 Difference]: With dead ends: 19593 [2024-11-27 20:09:27,643 INFO L226 Difference]: Without dead ends: 9243 [2024-11-27 20:09:27,727 INFO L434 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 [2024-11-27 20:09:27,728 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 743 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:27,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 4257 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:09:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2024-11-27 20:09:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 9221. [2024-11-27 20:09:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9221 states, 7077 states have (on average 1.6011021619330226) internal successors, (11331), 7352 states have internal predecessors, (11331), 1678 states have call successors, (1678), 454 states have call predecessors, (1678), 465 states have return successors, (2112), 1670 states have call predecessors, (2112), 1668 states have call successors, (2112) [2024-11-27 20:09:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9221 states to 9221 states and 15121 transitions. [2024-11-27 20:09:28,488 INFO L78 Accepts]: Start accepts. Automaton has 9221 states and 15121 transitions. Word has length 127 [2024-11-27 20:09:28,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:28,489 INFO L471 AbstractCegarLoop]: Abstraction has 9221 states and 15121 transitions. [2024-11-27 20:09:28,489 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) [2024-11-27 20:09:28,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9221 states and 15121 transitions. [2024-11-27 20:09:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 20:09:28,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:28,496 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:28,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:28,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:09:28,701 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:28,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash 262034279, now seen corresponding path program 1 times [2024-11-27 20:09:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591440888] [2024-11-27 20:09:28,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:09:28,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591440888] [2024-11-27 20:09:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591440888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:09:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916389345] [2024-11-27 20:09:28,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:28,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:28,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:28,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:09:28,970 INFO L87 Difference]: Start difference. First operand 9221 states and 15121 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) [2024-11-27 20:09:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:30,530 INFO L93 Difference]: Finished difference Result 27609 states and 46461 transitions. [2024-11-27 20:09:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:09:30,531 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 [2024-11-27 20:09:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:30,688 INFO L225 Difference]: With dead ends: 27609 [2024-11-27 20:09:30,688 INFO L226 Difference]: Without dead ends: 18406 [2024-11-27 20:09:30,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:30,757 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 867 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:30,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 4414 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:09:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2024-11-27 20:09:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 18305. [2024-11-27 20:09:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18305 states, 14060 states have (on average 1.5975817923186344) internal successors, (22462), 14601 states have internal predecessors, (22462), 3311 states have call successors, (3311), 902 states have call predecessors, (3311), 933 states have return successors, (4825), 3313 states have call predecessors, (4825), 3293 states have call successors, (4825) [2024-11-27 20:09:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18305 states to 18305 states and 30598 transitions. [2024-11-27 20:09:32,032 INFO L78 Accepts]: Start accepts. Automaton has 18305 states and 30598 transitions. Word has length 135 [2024-11-27 20:09:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:32,032 INFO L471 AbstractCegarLoop]: Abstraction has 18305 states and 30598 transitions. [2024-11-27 20:09:32,033 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) [2024-11-27 20:09:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 18305 states and 30598 transitions. [2024-11-27 20:09:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 20:09:32,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:32,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:32,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:09:32,040 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:32,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1173853575, now seen corresponding path program 1 times [2024-11-27 20:09:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445625915] [2024-11-27 20:09:32,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:09:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445625915] [2024-11-27 20:09:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445625915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:32,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579435873] [2024-11-27 20:09:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:32,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:32,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:32,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:32,332 INFO L87 Difference]: Start difference. First operand 18305 states and 30598 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) [2024-11-27 20:09:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:33,863 INFO L93 Difference]: Finished difference Result 36736 states and 62411 transitions. [2024-11-27 20:09:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:09:33,864 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 [2024-11-27 20:09:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:34,047 INFO L225 Difference]: With dead ends: 36736 [2024-11-27 20:09:34,048 INFO L226 Difference]: Without dead ends: 18449 [2024-11-27 20:09:34,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:34,199 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 12 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2570 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 [2024-11-27 20:09:34,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2570 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18449 states. [2024-11-27 20:09:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18449 to 18385. [2024-11-27 20:09:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18385 states, 14132 states have (on average 1.595103311633173) internal successors, (22542), 14657 states have internal predecessors, (22542), 3311 states have call successors, (3311), 934 states have call predecessors, (3311), 941 states have return successors, (4785), 3305 states have call predecessors, (4785), 3293 states have call successors, (4785) [2024-11-27 20:09:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18385 states to 18385 states and 30638 transitions. [2024-11-27 20:09:35,440 INFO L78 Accepts]: Start accepts. Automaton has 18385 states and 30638 transitions. Word has length 136 [2024-11-27 20:09:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:35,441 INFO L471 AbstractCegarLoop]: Abstraction has 18385 states and 30638 transitions. [2024-11-27 20:09:35,441 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) [2024-11-27 20:09:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 18385 states and 30638 transitions. [2024-11-27 20:09:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:09:35,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:35,449 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:35,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:09:35,450 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:35,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 787597031, now seen corresponding path program 1 times [2024-11-27 20:09:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354133396] [2024-11-27 20:09:35,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:09:35,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354133396] [2024-11-27 20:09:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354133396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:35,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:09:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135054497] [2024-11-27 20:09:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:35,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:35,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:35,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:09:35,815 INFO L87 Difference]: Start difference. First operand 18385 states and 30638 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) [2024-11-27 20:09:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:38,206 INFO L93 Difference]: Finished difference Result 55241 states and 95558 transitions. [2024-11-27 20:09:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:09:38,207 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 [2024-11-27 20:09:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:38,538 INFO L225 Difference]: With dead ends: 55241 [2024-11-27 20:09:38,538 INFO L226 Difference]: Without dead ends: 36874 [2024-11-27 20:09:38,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:38,700 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 863 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:38,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 4382 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:09:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36874 states. [2024-11-27 20:09:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36874 to 36709. [2024-11-27 20:09:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36709 states, 28227 states have (on average 1.5916321252701315) internal successors, (44927), 29268 states have internal predecessors, (44927), 6588 states have call successors, (6588), 1862 states have call predecessors, (6588), 1893 states have return successors, (11427), 6602 states have call predecessors, (11427), 6554 states have call successors, (11427) [2024-11-27 20:09:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36709 states to 36709 states and 62942 transitions. [2024-11-27 20:09:41,776 INFO L78 Accepts]: Start accepts. Automaton has 36709 states and 62942 transitions. Word has length 145 [2024-11-27 20:09:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:41,777 INFO L471 AbstractCegarLoop]: Abstraction has 36709 states and 62942 transitions. [2024-11-27 20:09:41,777 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) [2024-11-27 20:09:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 36709 states and 62942 transitions. [2024-11-27 20:09:41,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:09:41,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:41,788 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:41,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:09:41,788 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:41,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1486425167, now seen corresponding path program 1 times [2024-11-27 20:09:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:41,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351600069] [2024-11-27 20:09:41,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 20:09:41,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:41,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351600069] [2024-11-27 20:09:41,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351600069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:41,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:41,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:09:41,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25159440] [2024-11-27 20:09:41,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:42,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:42,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:42,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:42,002 INFO L87 Difference]: Start difference. First operand 36709 states and 62942 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) [2024-11-27 20:09:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:45,054 INFO L93 Difference]: Finished difference Result 73688 states and 129540 transitions. [2024-11-27 20:09:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:09:45,055 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 [2024-11-27 20:09:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:45,362 INFO L225 Difference]: With dead ends: 73688 [2024-11-27 20:09:45,362 INFO L226 Difference]: Without dead ends: 36997 [2024-11-27 20:09:45,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:45,924 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 11 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2570 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 [2024-11-27 20:09:45,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2570 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:09:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36997 states. [2024-11-27 20:09:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36997 to 36869. [2024-11-27 20:09:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36869 states, 28371 states have (on average 1.5891931902294596) internal successors, (45087), 29412 states have internal predecessors, (45087), 6588 states have call successors, (6588), 1894 states have call predecessors, (6588), 1909 states have return successors, (11371), 6586 states have call predecessors, (11371), 6554 states have call successors, (11371) [2024-11-27 20:09:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36869 states to 36869 states and 63046 transitions. [2024-11-27 20:09:48,854 INFO L78 Accepts]: Start accepts. Automaton has 36869 states and 63046 transitions. Word has length 146 [2024-11-27 20:09:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:48,855 INFO L471 AbstractCegarLoop]: Abstraction has 36869 states and 63046 transitions. [2024-11-27 20:09:48,855 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) [2024-11-27 20:09:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 36869 states and 63046 transitions. [2024-11-27 20:09:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 20:09:48,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:48,862 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:48,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:09:48,863 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:48,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash -614148515, now seen corresponding path program 1 times [2024-11-27 20:09:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671864724] [2024-11-27 20:09:48,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:09:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671864724] [2024-11-27 20:09:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671864724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:49,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:49,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:09:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642008207] [2024-11-27 20:09:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:49,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:49,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:49,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:09:49,112 INFO L87 Difference]: Start difference. First operand 36869 states and 63046 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) [2024-11-27 20:09:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:54,384 INFO L93 Difference]: Finished difference Result 110929 states and 200578 transitions. [2024-11-27 20:09:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:09:54,385 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 [2024-11-27 20:09:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:54,977 INFO L225 Difference]: With dead ends: 110929 [2024-11-27 20:09:54,978 INFO L226 Difference]: Without dead ends: 74078 [2024-11-27 20:09:55,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:55,443 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 859 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 4524 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:55,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 4524 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:09:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74078 states. [2024-11-27 20:09:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74078 to 73785. [2024-11-27 20:09:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73785 states, 56786 states have (on average 1.5865882435811645) internal successors, (90096), 58859 states have internal predecessors, (90096), 13153 states have call successors, (13153), 3782 states have call predecessors, (13153), 3845 states have return successors, (28385), 13191 states have call predecessors, (28385), 13087 states have call successors, (28385) [2024-11-27 20:10:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73785 states to 73785 states and 131634 transitions. [2024-11-27 20:10:00,121 INFO L78 Accepts]: Start accepts. Automaton has 73785 states and 131634 transitions. Word has length 156 [2024-11-27 20:10:00,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:00,122 INFO L471 AbstractCegarLoop]: Abstraction has 73785 states and 131634 transitions. [2024-11-27 20:10:00,122 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) [2024-11-27 20:10:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 73785 states and 131634 transitions. [2024-11-27 20:10:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:10:00,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:00,127 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:00,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:10:00,127 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:00,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2112985631, now seen corresponding path program 1 times [2024-11-27 20:10:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:00,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270554124] [2024-11-27 20:10:00,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:10:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:00,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270554124] [2024-11-27 20:10:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270554124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:10:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504700460] [2024-11-27 20:10:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:00,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:10:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:00,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:10:00,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:10:00,272 INFO L87 Difference]: Start difference. First operand 73785 states and 131634 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) [2024-11-27 20:10:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:05,818 INFO L93 Difference]: Finished difference Result 148192 states and 274705 transitions. [2024-11-27 20:10:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:05,819 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 [2024-11-27 20:10:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:06,863 INFO L225 Difference]: With dead ends: 148192 [2024-11-27 20:10:06,863 INFO L226 Difference]: Without dead ends: 74425 [2024-11-27 20:10:07,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:07,773 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 10 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2570 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 [2024-11-27 20:10:07,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2570 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74425 states. [2024-11-27 20:10:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74425 to 74169. [2024-11-27 20:10:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74169 states, 57138 states have (on average 1.5835346004410376) internal successors, (90480), 59211 states have internal predecessors, (90480), 13153 states have call successors, (13153), 3846 states have call predecessors, (13153), 3877 states have return successors, (28321), 13159 states have call predecessors, (28321), 13087 states have call successors, (28321) [2024-11-27 20:10:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74169 states to 74169 states and 131954 transitions. [2024-11-27 20:10:12,590 INFO L78 Accepts]: Start accepts. Automaton has 74169 states and 131954 transitions. Word has length 157 [2024-11-27 20:10:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:12,591 INFO L471 AbstractCegarLoop]: Abstraction has 74169 states and 131954 transitions. [2024-11-27 20:10:12,591 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) [2024-11-27 20:10:12,591 INFO L276 IsEmpty]: Start isEmpty. Operand 74169 states and 131954 transitions. [2024-11-27 20:10:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 20:10:12,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:12,604 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:12,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:10:12,605 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:12,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1900821555, now seen corresponding path program 1 times [2024-11-27 20:10:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889664103] [2024-11-27 20:10:12,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:12,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-27 20:10:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889664103] [2024-11-27 20:10:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889664103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321699881] [2024-11-27 20:10:13,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:13,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:13,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:13,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b1b02d-97bb-489e-bf1b-7290ff9290e3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:10:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:10:13,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 20:10:13,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:10:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321699881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:10:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 20:10:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788335159] [2024-11-27 20:10:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:13,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:10:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:13,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:10:13,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:10:13,888 INFO L87 Difference]: Start difference. First operand 74169 states and 131954 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) [2024-11-27 20:10:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:21,796 INFO L93 Difference]: Finished difference Result 181091 states and 335811 transitions. [2024-11-27 20:10:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:10:21,797 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 [2024-11-27 20:10:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:23,071 INFO L225 Difference]: With dead ends: 181091 [2024-11-27 20:10:23,071 INFO L226 Difference]: Without dead ends: 106892 [2024-11-27 20:10:23,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:10:23,850 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 866 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3939 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:23,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 3939 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:10:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106892 states.