./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:09:34,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:09:34,269 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:09:34,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:09:34,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:09:34,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:09:34,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:09:34,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:09:34,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:09:34,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:09:34,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:09:34,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:09:34,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:09:34,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:09:34,324 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:09:34,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:09:34,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:09:34,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:09:34,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:09:34,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:09:34,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:09:34,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:09:34,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:09:34,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:09:34,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:09:34,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:09:34,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:09:34,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:09:34,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:09:34,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:09:34,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:09:34,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:09:34,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:09:34,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:09:34,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:09:34,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:09:34,332 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_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC 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 -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2024-11-24 01:09:34,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:09:34,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:09:34,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:09:34,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:09:34,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:09:34,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2024-11-24 01:09:37,799 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/data/49bea6050/eca8f25d9cae49158f7de5570ceaef1e/FLAGfb38f1f8d [2024-11-24 01:09:38,418 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:09:38,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2024-11-24 01:09:38,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/data/49bea6050/eca8f25d9cae49158f7de5570ceaef1e/FLAGfb38f1f8d [2024-11-24 01:09:38,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/data/49bea6050/eca8f25d9cae49158f7de5570ceaef1e [2024-11-24 01:09:38,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:09:38,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:09:38,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:09:38,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:09:38,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:09:38,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:09:38" (1/1) ... [2024-11-24 01:09:38,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbb9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:38, skipping insertion in model container [2024-11-24 01:09:38,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:09:38" (1/1) ... [2024-11-24 01:09:38,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:09:39,295 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_396c1698-e3ab-4033-9472-049c5ab9f979/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2024-11-24 01:09:39,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:09:39,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:09:39,376 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-24 01:09:39,377 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2024-11-24 01:09:39,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [434] [2024-11-24 01:09:39,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2095] [2024-11-24 01:09:39,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2449] [2024-11-24 01:09:39,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2458] [2024-11-24 01:09:39,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2549] [2024-11-24 01:09:39,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3210] [2024-11-24 01:09:39,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3299] [2024-11-24 01:09:39,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3417] [2024-11-24 01:09:39,497 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_396c1698-e3ab-4033-9472-049c5ab9f979/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2024-11-24 01:09:39,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:09:39,598 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:09:39,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39 WrapperNode [2024-11-24 01:09:39,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:09:39,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:09:39,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:09:39,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:09:39,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,733 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 892 [2024-11-24 01:09:39,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:09:39,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:09:39,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:09:39,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:09:39,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,793 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]. [2024-11-24 01:09:39,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:09:39,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:09:39,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:09:39,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:09:39,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (1/1) ... [2024-11-24 01:09:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:09:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:40,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:09:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:09:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-24 01:09:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-24 01:09:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:09:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:09:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:09:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-24 01:09:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-24 01:09:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-24 01:09:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-24 01:09:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-24 01:09:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-24 01:09:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 01:09:40,061 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 01:09:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 01:09:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 01:09:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 01:09:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 01:09:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-24 01:09:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-24 01:09:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 01:09:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 01:09:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 01:09:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 01:09:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 01:09:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 01:09:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 01:09:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 01:09:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 01:09:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:09:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 01:09:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:09:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:09:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 01:09:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 01:09:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-24 01:09:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-24 01:09:40,377 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:09:40,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:09:42,313 INFO L? ?]: Removed 486 outVars from TransFormulas that were not future-live. [2024-11-24 01:09:42,313 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:09:42,359 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:09:42,363 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-24 01:09:42,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:09:42 BoogieIcfgContainer [2024-11-24 01:09:42,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:09:42,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:09:42,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:09:42,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:09:42,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:09:38" (1/3) ... [2024-11-24 01:09:42,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c9a203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:09:42, skipping insertion in model container [2024-11-24 01:09:42,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:09:39" (2/3) ... [2024-11-24 01:09:42,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c9a203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:09:42, skipping insertion in model container [2024-11-24 01:09:42,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:09:42" (3/3) ... [2024-11-24 01:09:42,386 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2024-11-24 01:09:42,407 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:09:42,411 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product24.cil.c that has 30 procedures, 624 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 01:09:42,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:09:42,551 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;@300e1933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:09:42,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:09:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 624 states, 483 states have (on average 1.6770186335403727) internal successors, (810), 503 states have internal predecessors, (810), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-24 01:09:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 01:09:42,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:42,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:42,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:42,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash 20590248, now seen corresponding path program 1 times [2024-11-24 01:09:42,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320484373] [2024-11-24 01:09:42,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 01:09:43,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320484373] [2024-11-24 01:09:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320484373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121656216] [2024-11-24 01:09:43,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:43,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:43,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:09:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:44,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:09:44,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:09:44,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121656216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 01:09:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300936101] [2024-11-24 01:09:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:44,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:09:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:44,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:09:44,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:09:44,330 INFO L87 Difference]: Start difference. First operand has 624 states, 483 states have (on average 1.6770186335403727) internal successors, (810), 503 states have internal predecessors, (810), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:44,640 INFO L93 Difference]: Finished difference Result 1247 states and 2076 transitions. [2024-11-24 01:09:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:09:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-24 01:09:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:44,666 INFO L225 Difference]: With dead ends: 1247 [2024-11-24 01:09:44,666 INFO L226 Difference]: Without dead ends: 623 [2024-11-24 01:09:44,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:09:44,682 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 17 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:44,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3007 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-24 01:09:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2024-11-24 01:09:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 484 states have (on average 1.6611570247933884) internal successors, (804), 502 states have internal predecessors, (804), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-24 01:09:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2024-11-24 01:09:44,848 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 83 [2024-11-24 01:09:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:44,849 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2024-11-24 01:09:44,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2024-11-24 01:09:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 01:09:44,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:44,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:44,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:09:45,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:09:45,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:45,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1298280444, now seen corresponding path program 1 times [2024-11-24 01:09:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195097783] [2024-11-24 01:09:45,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 01:09:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195097783] [2024-11-24 01:09:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195097783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280065129] [2024-11-24 01:09:45,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:45,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:45,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:45,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:45,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:09:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:46,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:09:46,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:09:46,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280065129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:46,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:46,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:09:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690612760] [2024-11-24 01:09:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:46,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:09:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:46,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:09:46,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:09:46,191 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:46,443 INFO L93 Difference]: Finished difference Result 1252 states and 2056 transitions. [2024-11-24 01:09:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2024-11-24 01:09:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:46,455 INFO L225 Difference]: With dead ends: 1252 [2024-11-24 01:09:46,455 INFO L226 Difference]: Without dead ends: 639 [2024-11-24 01:09:46,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:46,461 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 90 mSDsluCounter, 4878 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5872 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:46,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5872 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-24 01:09:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 636. [2024-11-24 01:09:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 494 states have (on average 1.6578947368421053) internal successors, (819), 514 states have internal predecessors, (819), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2024-11-24 01:09:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1043 transitions. [2024-11-24 01:09:46,542 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1043 transitions. Word has length 85 [2024-11-24 01:09:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:46,543 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1043 transitions. [2024-11-24 01:09:46,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1043 transitions. [2024-11-24 01:09:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:09:46,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:46,550 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:46,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:09:46,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:09:46,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:46,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 469472734, now seen corresponding path program 1 times [2024-11-24 01:09:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762411493] [2024-11-24 01:09:46,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:09:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762411493] [2024-11-24 01:09:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762411493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4531465] [2024-11-24 01:09:47,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:47,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:47,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:47,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:47,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:09:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:47,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:09:47,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 01:09:47,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4531465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:47,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:09:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544514970] [2024-11-24 01:09:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:47,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:09:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:47,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:09:47,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:09:47,750 INFO L87 Difference]: Start difference. First operand 636 states and 1043 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:47,947 INFO L93 Difference]: Finished difference Result 1272 states and 2089 transitions. [2024-11-24 01:09:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2024-11-24 01:09:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:47,956 INFO L225 Difference]: With dead ends: 1272 [2024-11-24 01:09:47,956 INFO L226 Difference]: Without dead ends: 648 [2024-11-24 01:09:47,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:47,962 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 101 mSDsluCounter, 4866 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:47,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5860 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-24 01:09:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 636. [2024-11-24 01:09:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 494 states have (on average 1.6578947368421053) internal successors, (819), 514 states have internal predecessors, (819), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2024-11-24 01:09:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1043 transitions. [2024-11-24 01:09:48,022 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1043 transitions. Word has length 102 [2024-11-24 01:09:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:48,022 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1043 transitions. [2024-11-24 01:09:48,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1043 transitions. [2024-11-24 01:09:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-24 01:09:48,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:48,030 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:48,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:09:48,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:48,231 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:48,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2049326749, now seen corresponding path program 1 times [2024-11-24 01:09:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:48,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502586426] [2024-11-24 01:09:48,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 01:09:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502586426] [2024-11-24 01:09:48,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502586426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:48,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757133936] [2024-11-24 01:09:48,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:48,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:48,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:48,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:48,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:09:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:48,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:09:48,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:09:48,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:48,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757133936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:48,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:48,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:09:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822533641] [2024-11-24 01:09:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:48,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:09:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:48,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:09:48,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:09:48,820 INFO L87 Difference]: Start difference. First operand 636 states and 1043 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:48,965 INFO L93 Difference]: Finished difference Result 1275 states and 2092 transitions. [2024-11-24 01:09:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:09:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2024-11-24 01:09:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:48,977 INFO L225 Difference]: With dead ends: 1275 [2024-11-24 01:09:48,977 INFO L226 Difference]: Without dead ends: 647 [2024-11-24 01:09:48,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:09:48,982 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 12 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:48,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2976 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-24 01:09:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2024-11-24 01:09:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 502 states have (on average 1.649402390438247) internal successors, (828), 522 states have internal predecessors, (828), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2024-11-24 01:09:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1051 transitions. [2024-11-24 01:09:49,048 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1051 transitions. Word has length 86 [2024-11-24 01:09:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:49,050 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1051 transitions. [2024-11-24 01:09:49,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1051 transitions. [2024-11-24 01:09:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:09:49,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:49,056 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:49,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:09:49,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:49,260 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:49,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1293149632, now seen corresponding path program 1 times [2024-11-24 01:09:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095163970] [2024-11-24 01:09:49,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 01:09:49,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:49,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095163970] [2024-11-24 01:09:49,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095163970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:49,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853483941] [2024-11-24 01:09:49,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:49,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:49,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:49,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:49,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:09:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:49,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:09:49,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:09:50,059 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853483941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:50,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:50,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:09:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125286179] [2024-11-24 01:09:50,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:50,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:09:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:50,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:09:50,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:09:50,062 INFO L87 Difference]: Start difference. First operand 645 states and 1051 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:50,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:50,267 INFO L93 Difference]: Finished difference Result 1281 states and 2092 transitions. [2024-11-24 01:09:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2024-11-24 01:09:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:50,278 INFO L225 Difference]: With dead ends: 1281 [2024-11-24 01:09:50,278 INFO L226 Difference]: Without dead ends: 659 [2024-11-24 01:09:50,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:50,285 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 112 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 5848 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:50,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 5848 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-24 01:09:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 645. [2024-11-24 01:09:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 502 states have (on average 1.649402390438247) internal successors, (828), 522 states have internal predecessors, (828), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2024-11-24 01:09:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1051 transitions. [2024-11-24 01:09:50,331 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1051 transitions. Word has length 87 [2024-11-24 01:09:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:50,331 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1051 transitions. [2024-11-24 01:09:50,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1051 transitions. [2024-11-24 01:09:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-24 01:09:50,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:50,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:50,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:09:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:50,539 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:50,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 984703299, now seen corresponding path program 1 times [2024-11-24 01:09:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414875049] [2024-11-24 01:09:50,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:09:50,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414875049] [2024-11-24 01:09:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414875049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898838707] [2024-11-24 01:09:50,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:50,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:50,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:09:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:51,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:09:51,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:09:51,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:51,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898838707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:51,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:51,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 01:09:51,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423403588] [2024-11-24 01:09:51,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:51,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:09:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:51,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:09:51,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:09:51,178 INFO L87 Difference]: Start difference. First operand 645 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:51,534 INFO L93 Difference]: Finished difference Result 1339 states and 2203 transitions. [2024-11-24 01:09:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:09:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2024-11-24 01:09:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:51,543 INFO L225 Difference]: With dead ends: 1339 [2024-11-24 01:09:51,544 INFO L226 Difference]: Without dead ends: 717 [2024-11-24 01:09:51,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:09:51,548 INFO L435 NwaCegarLoop]: 981 mSDtfsCounter, 119 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:51,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2866 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:09:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-24 01:09:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 690. [2024-11-24 01:09:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.6703296703296704) internal successors, (912), 566 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-24 01:09:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1134 transitions. [2024-11-24 01:09:51,593 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1134 transitions. Word has length 88 [2024-11-24 01:09:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:51,593 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1134 transitions. [2024-11-24 01:09:51,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1134 transitions. [2024-11-24 01:09:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-24 01:09:51,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:51,597 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:51,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:09:51,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:51,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:51,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1512669842, now seen corresponding path program 1 times [2024-11-24 01:09:51,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857425148] [2024-11-24 01:09:51,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 01:09:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857425148] [2024-11-24 01:09:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857425148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321788267] [2024-11-24 01:09:52,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:52,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:52,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:52,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:52,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:09:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:52,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:09:52,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:09:52,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321788267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:09:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889074732] [2024-11-24 01:09:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:52,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:09:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:52,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:09:52,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:52,552 INFO L87 Difference]: Start difference. First operand 690 states and 1134 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:52,840 INFO L93 Difference]: Finished difference Result 1383 states and 2275 transitions. [2024-11-24 01:09:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:09:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-24 01:09:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:52,850 INFO L225 Difference]: With dead ends: 1383 [2024-11-24 01:09:52,850 INFO L226 Difference]: Without dead ends: 716 [2024-11-24 01:09:52,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:09:52,855 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 95 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6791 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:52,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6791 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:09:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-24 01:09:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 690. [2024-11-24 01:09:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.6703296703296704) internal successors, (912), 566 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-24 01:09:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1134 transitions. [2024-11-24 01:09:52,899 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1134 transitions. Word has length 89 [2024-11-24 01:09:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:52,900 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1134 transitions. [2024-11-24 01:09:52,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1134 transitions. [2024-11-24 01:09:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 01:09:52,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:52,903 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:52,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:09:53,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:53,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:53,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1847156489, now seen corresponding path program 1 times [2024-11-24 01:09:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070441162] [2024-11-24 01:09:53,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 01:09:53,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070441162] [2024-11-24 01:09:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070441162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399708997] [2024-11-24 01:09:53,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:53,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:53,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:53,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:53,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:09:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:53,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:09:53,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:09:53,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399708997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:09:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398888170] [2024-11-24 01:09:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:53,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:09:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:53,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:09:53,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:53,889 INFO L87 Difference]: Start difference. First operand 690 states and 1134 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:54,209 INFO L93 Difference]: Finished difference Result 1383 states and 2275 transitions. [2024-11-24 01:09:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:09:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-11-24 01:09:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:54,220 INFO L225 Difference]: With dead ends: 1383 [2024-11-24 01:09:54,220 INFO L226 Difference]: Without dead ends: 716 [2024-11-24 01:09:54,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:09:54,226 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 105 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6779 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:54,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6779 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:09:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-24 01:09:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 690. [2024-11-24 01:09:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.6703296703296704) internal successors, (912), 566 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-24 01:09:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1134 transitions. [2024-11-24 01:09:54,281 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1134 transitions. Word has length 90 [2024-11-24 01:09:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:54,282 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1134 transitions. [2024-11-24 01:09:54,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1134 transitions. [2024-11-24 01:09:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:09:54,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:54,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:54,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:09:54,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:54,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:54,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash -429249778, now seen corresponding path program 1 times [2024-11-24 01:09:54,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:54,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942393528] [2024-11-24 01:09:54,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:09:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942393528] [2024-11-24 01:09:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942393528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723714769] [2024-11-24 01:09:54,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:54,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:54,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:09:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:55,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:09:55,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 01:09:55,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723714769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:09:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624030874] [2024-11-24 01:09:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:55,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:09:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:55,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:09:55,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:55,264 INFO L87 Difference]: Start difference. First operand 690 states and 1134 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:55,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:55,502 INFO L93 Difference]: Finished difference Result 1374 states and 2260 transitions. [2024-11-24 01:09:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:09:55,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2024-11-24 01:09:55,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:55,510 INFO L225 Difference]: With dead ends: 1374 [2024-11-24 01:09:55,510 INFO L226 Difference]: Without dead ends: 707 [2024-11-24 01:09:55,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:09:55,514 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 115 mSDsluCounter, 5783 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:55,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6767 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:09:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-24 01:09:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 690. [2024-11-24 01:09:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.6703296703296704) internal successors, (912), 566 states have internal predecessors, (912), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-24 01:09:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1134 transitions. [2024-11-24 01:09:55,552 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1134 transitions. Word has length 107 [2024-11-24 01:09:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:55,552 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1134 transitions. [2024-11-24 01:09:55,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1134 transitions. [2024-11-24 01:09:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:09:55,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:55,555 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:55,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:09:55,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:55,756 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:55,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1809724012, now seen corresponding path program 1 times [2024-11-24 01:09:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400801492] [2024-11-24 01:09:55,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:09:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400801492] [2024-11-24 01:09:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400801492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043531190] [2024-11-24 01:09:55,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:55,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:55,937 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:55,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:09:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:56,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:09:56,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:09:56,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:56,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043531190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:56,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:56,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:09:56,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650377871] [2024-11-24 01:09:56,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:56,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:09:56,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:56,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:09:56,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:09:56,372 INFO L87 Difference]: Start difference. First operand 690 states and 1134 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:09:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:56,477 INFO L93 Difference]: Finished difference Result 1346 states and 2220 transitions. [2024-11-24 01:09:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:09:56,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2024-11-24 01:09:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:56,485 INFO L225 Difference]: With dead ends: 1346 [2024-11-24 01:09:56,485 INFO L226 Difference]: Without dead ends: 690 [2024-11-24 01:09:56,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:09:56,492 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:56,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2970 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:09:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-24 01:09:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2024-11-24 01:09:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.6611721611721613) internal successors, (907), 566 states have internal predecessors, (907), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-24 01:09:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1129 transitions. [2024-11-24 01:09:56,530 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1129 transitions. Word has length 107 [2024-11-24 01:09:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:56,531 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1129 transitions. [2024-11-24 01:09:56,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:09:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1129 transitions. [2024-11-24 01:09:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 01:09:56,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:56,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:56,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:09:56,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:09:56,739 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:56,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 633603469, now seen corresponding path program 1 times [2024-11-24 01:09:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:56,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144750636] [2024-11-24 01:09:56,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:09:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144750636] [2024-11-24 01:09:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144750636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013185682] [2024-11-24 01:09:56,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:56,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:56,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:56,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:56,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:09:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:57,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:09:57,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:09:57,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013185682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 01:09:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539844353] [2024-11-24 01:09:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:57,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:09:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:57,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:09:57,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:09:57,333 INFO L87 Difference]: Start difference. First operand 690 states and 1129 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:57,480 INFO L93 Difference]: Finished difference Result 1314 states and 2152 transitions. [2024-11-24 01:09:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2024-11-24 01:09:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:57,489 INFO L225 Difference]: With dead ends: 1314 [2024-11-24 01:09:57,489 INFO L226 Difference]: Without dead ends: 716 [2024-11-24 01:09:57,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:09:57,495 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 90 mSDsluCounter, 4895 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5892 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:57,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5892 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-24 01:09:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 703. [2024-11-24 01:09:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.658273381294964) internal successors, (922), 578 states have internal predecessors, (922), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2024-11-24 01:09:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1150 transitions. [2024-11-24 01:09:57,538 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1150 transitions. Word has length 108 [2024-11-24 01:09:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:57,538 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1150 transitions. [2024-11-24 01:09:57,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:09:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1150 transitions. [2024-11-24 01:09:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 01:09:57,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:57,543 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:57,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:09:57,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:09:57,744 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:57,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1216779647, now seen corresponding path program 1 times [2024-11-24 01:09:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:57,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985722269] [2024-11-24 01:09:57,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:09:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:57,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985722269] [2024-11-24 01:09:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985722269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:57,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285283826] [2024-11-24 01:09:57,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:57,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:57,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:57,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:57,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:09:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:58,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:09:58,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:09:58,384 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285283826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:58,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:58,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 01:09:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976676137] [2024-11-24 01:09:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:58,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:09:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:58,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:09:58,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:09:58,387 INFO L87 Difference]: Start difference. First operand 703 states and 1150 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:58,561 INFO L93 Difference]: Finished difference Result 1323 states and 2167 transitions. [2024-11-24 01:09:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:58,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-24 01:09:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:58,570 INFO L225 Difference]: With dead ends: 1323 [2024-11-24 01:09:58,570 INFO L226 Difference]: Without dead ends: 725 [2024-11-24 01:09:58,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:09:58,575 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 101 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:58,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5880 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:09:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-24 01:09:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 703. [2024-11-24 01:09:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.658273381294964) internal successors, (922), 578 states have internal predecessors, (922), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2024-11-24 01:09:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1150 transitions. [2024-11-24 01:09:58,624 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1150 transitions. Word has length 93 [2024-11-24 01:09:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:58,626 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1150 transitions. [2024-11-24 01:09:58,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:09:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1150 transitions. [2024-11-24 01:09:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 01:09:58,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:58,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:58,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:09:58,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:58,830 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:58,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash 44434809, now seen corresponding path program 1 times [2024-11-24 01:09:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250534065] [2024-11-24 01:09:58,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:58,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:09:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:58,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250534065] [2024-11-24 01:09:58,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250534065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47628416] [2024-11-24 01:09:58,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:58,955 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:58,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:09:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:59,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:09:59,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 01:09:59,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47628416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:09:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122932885] [2024-11-24 01:09:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:59,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:09:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:59,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:09:59,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:09:59,321 INFO L87 Difference]: Start difference. First operand 703 states and 1150 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:59,389 INFO L93 Difference]: Finished difference Result 1368 states and 2250 transitions. [2024-11-24 01:09:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:09:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2024-11-24 01:09:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:59,396 INFO L225 Difference]: With dead ends: 1368 [2024-11-24 01:09:59,396 INFO L226 Difference]: Without dead ends: 703 [2024-11-24 01:09:59,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:09:59,402 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 2 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:59,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2979 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:09:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-24 01:09:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-11-24 01:09:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.6528776978417266) internal successors, (919), 578 states have internal predecessors, (919), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2024-11-24 01:09:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1147 transitions. [2024-11-24 01:09:59,442 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1147 transitions. Word has length 93 [2024-11-24 01:09:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:59,442 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1147 transitions. [2024-11-24 01:09:59,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:09:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1147 transitions. [2024-11-24 01:09:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 01:09:59,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:59,446 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:09:59,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:09:59,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:59,649 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:59,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 205596433, now seen corresponding path program 1 times [2024-11-24 01:09:59,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627758783] [2024-11-24 01:09:59,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:09:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 01:09:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:09:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627758783] [2024-11-24 01:09:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627758783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275497385] [2024-11-24 01:09:59,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:59,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:59,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:09:59,751 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:09:59,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:10:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:00,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:10:00,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:10:00,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:00,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275497385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:00,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:00,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:10:00,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016479572] [2024-11-24 01:10:00,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:00,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:10:00,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:00,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:10:00,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:10:00,220 INFO L87 Difference]: Start difference. First operand 703 states and 1147 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:10:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:00,448 INFO L93 Difference]: Finished difference Result 1397 states and 2296 transitions. [2024-11-24 01:10:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:00,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-11-24 01:10:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:00,455 INFO L225 Difference]: With dead ends: 1397 [2024-11-24 01:10:00,455 INFO L226 Difference]: Without dead ends: 799 [2024-11-24 01:10:00,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:00,459 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 167 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:00,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2830 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:10:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-24 01:10:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 748. [2024-11-24 01:10:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 600 states have (on average 1.6716666666666666) internal successors, (1003), 622 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-24 01:10:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1228 transitions. [2024-11-24 01:10:00,494 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1228 transitions. Word has length 110 [2024-11-24 01:10:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:00,495 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1228 transitions. [2024-11-24 01:10:00,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:10:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1228 transitions. [2024-11-24 01:10:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 01:10:00,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:00,498 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:00,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:00,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:10:00,699 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:00,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1637915411, now seen corresponding path program 1 times [2024-11-24 01:10:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049836850] [2024-11-24 01:10:00,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 01:10:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049836850] [2024-11-24 01:10:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049836850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535957379] [2024-11-24 01:10:00,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:00,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:00,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:00,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:10:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:01,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:10:01,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:10:01,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535957379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:01,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:01,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 01:10:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131033125] [2024-11-24 01:10:01,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:01,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:10:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:01,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:10:01,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:10:01,442 INFO L87 Difference]: Start difference. First operand 748 states and 1228 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:10:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:01,652 INFO L93 Difference]: Finished difference Result 1380 states and 2261 transitions. [2024-11-24 01:10:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:10:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-24 01:10:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:01,659 INFO L225 Difference]: With dead ends: 1380 [2024-11-24 01:10:01,660 INFO L226 Difference]: Without dead ends: 782 [2024-11-24 01:10:01,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:10:01,664 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 96 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6783 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:01,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6783 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:10:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-24 01:10:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 748. [2024-11-24 01:10:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 600 states have (on average 1.6716666666666666) internal successors, (1003), 622 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-24 01:10:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1228 transitions. [2024-11-24 01:10:01,699 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1228 transitions. Word has length 110 [2024-11-24 01:10:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:01,700 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1228 transitions. [2024-11-24 01:10:01,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:10:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1228 transitions. [2024-11-24 01:10:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 01:10:01,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:01,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:01,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:01,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 01:10:01,907 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:01,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2458460, now seen corresponding path program 1 times [2024-11-24 01:10:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899326559] [2024-11-24 01:10:01,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 01:10:01,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899326559] [2024-11-24 01:10:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899326559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464639698] [2024-11-24 01:10:01,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:01,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:01,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:01,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:10:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:02,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:10:02,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:10:02,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464639698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:02,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 01:10:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175358493] [2024-11-24 01:10:02,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:02,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:10:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:02,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:10:02,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:10:02,499 INFO L87 Difference]: Start difference. First operand 748 states and 1228 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:10:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:02,723 INFO L93 Difference]: Finished difference Result 1371 states and 2247 transitions. [2024-11-24 01:10:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:10:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2024-11-24 01:10:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:02,734 INFO L225 Difference]: With dead ends: 1371 [2024-11-24 01:10:02,734 INFO L226 Difference]: Without dead ends: 773 [2024-11-24 01:10:02,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:10:02,740 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 106 mSDsluCounter, 5789 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:02,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6771 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:10:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-24 01:10:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 748. [2024-11-24 01:10:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 600 states have (on average 1.6716666666666666) internal successors, (1003), 622 states have internal predecessors, (1003), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-24 01:10:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1228 transitions. [2024-11-24 01:10:02,798 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1228 transitions. Word has length 111 [2024-11-24 01:10:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:02,799 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1228 transitions. [2024-11-24 01:10:02,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-24 01:10:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1228 transitions. [2024-11-24 01:10:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 01:10:02,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:02,802 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:03,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:10:03,003 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:03,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash 845405281, now seen corresponding path program 1 times [2024-11-24 01:10:03,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:03,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201333343] [2024-11-24 01:10:03,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:10:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201333343] [2024-11-24 01:10:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201333343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111820691] [2024-11-24 01:10:03,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:03,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:03,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:03,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:03,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:10:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:03,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:10:03,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:10:03,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111820691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-24 01:10:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600976935] [2024-11-24 01:10:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:03,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:03,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:03,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:10:03,850 INFO L87 Difference]: Start difference. First operand 748 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:10:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:04,057 INFO L93 Difference]: Finished difference Result 1932 states and 3194 transitions. [2024-11-24 01:10:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-11-24 01:10:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:04,071 INFO L225 Difference]: With dead ends: 1932 [2024-11-24 01:10:04,071 INFO L226 Difference]: Without dead ends: 1338 [2024-11-24 01:10:04,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:10:04,076 INFO L435 NwaCegarLoop]: 1072 mSDtfsCounter, 929 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:04,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 2029 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:10:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2024-11-24 01:10:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1273. [2024-11-24 01:10:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1021 states have (on average 1.6748285994123409) internal successors, (1710), 1052 states have internal predecessors, (1710), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2024-11-24 01:10:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 2105 transitions. [2024-11-24 01:10:04,149 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 2105 transitions. Word has length 96 [2024-11-24 01:10:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:04,150 INFO L471 AbstractCegarLoop]: Abstraction has 1273 states and 2105 transitions. [2024-11-24 01:10:04,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:10:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 2105 transitions. [2024-11-24 01:10:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 01:10:04,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:04,156 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:04,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:10:04,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:10:04,357 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:04,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1519813524, now seen corresponding path program 1 times [2024-11-24 01:10:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385170344] [2024-11-24 01:10:04,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:10:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385170344] [2024-11-24 01:10:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385170344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285072008] [2024-11-24 01:10:04,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:04,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:04,469 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:04,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:10:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:04,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:10:04,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:10:04,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:04,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285072008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:10:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81692648] [2024-11-24 01:10:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:04,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:04,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:04,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:04,970 INFO L87 Difference]: Start difference. First operand 1273 states and 2105 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-24 01:10:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:05,157 INFO L93 Difference]: Finished difference Result 3127 states and 5170 transitions. [2024-11-24 01:10:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 150 [2024-11-24 01:10:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:05,177 INFO L225 Difference]: With dead ends: 3127 [2024-11-24 01:10:05,177 INFO L226 Difference]: Without dead ends: 2008 [2024-11-24 01:10:05,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:10:05,184 INFO L435 NwaCegarLoop]: 1343 mSDtfsCounter, 949 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:05,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 4616 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2024-11-24 01:10:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2004. [2024-11-24 01:10:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1607 states have (on average 1.654635967641568) internal successors, (2659), 1641 states have internal predecessors, (2659), 303 states have call successors, (303), 94 states have call predecessors, (303), 93 states have return successors, (335), 284 states have call predecessors, (335), 297 states have call successors, (335) [2024-11-24 01:10:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 3297 transitions. [2024-11-24 01:10:05,298 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 3297 transitions. Word has length 150 [2024-11-24 01:10:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:05,299 INFO L471 AbstractCegarLoop]: Abstraction has 2004 states and 3297 transitions. [2024-11-24 01:10:05,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-24 01:10:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 3297 transitions. [2024-11-24 01:10:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-24 01:10:05,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:05,306 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:05,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:10:05,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:10:05,510 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:05,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1573898482, now seen corresponding path program 1 times [2024-11-24 01:10:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260235713] [2024-11-24 01:10:05,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:10:05,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260235713] [2024-11-24 01:10:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260235713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008301174] [2024-11-24 01:10:05,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:05,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:05,619 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:05,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:10:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:05,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:10:05,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:10:06,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:06,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008301174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:10:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823413948] [2024-11-24 01:10:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:06,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:06,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:06,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:06,137 INFO L87 Difference]: Start difference. First operand 2004 states and 3297 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:06,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:06,993 INFO L93 Difference]: Finished difference Result 3886 states and 6530 transitions. [2024-11-24 01:10:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:06,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2024-11-24 01:10:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:07,009 INFO L225 Difference]: With dead ends: 3886 [2024-11-24 01:10:07,009 INFO L226 Difference]: Without dead ends: 2036 [2024-11-24 01:10:07,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:07,020 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 945 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:07,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2530 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:10:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2024-11-24 01:10:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2036. [2024-11-24 01:10:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 1635 states have (on average 1.65565749235474) internal successors, (2707), 1669 states have internal predecessors, (2707), 303 states have call successors, (303), 98 states have call predecessors, (303), 97 states have return successors, (339), 284 states have call predecessors, (339), 297 states have call successors, (339) [2024-11-24 01:10:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3349 transitions. [2024-11-24 01:10:07,181 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3349 transitions. Word has length 151 [2024-11-24 01:10:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:07,181 INFO L471 AbstractCegarLoop]: Abstraction has 2036 states and 3349 transitions. [2024-11-24 01:10:07,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3349 transitions. [2024-11-24 01:10:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:10:07,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:07,190 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:07,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:10:07,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:07,395 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1343870474, now seen corresponding path program 1 times [2024-11-24 01:10:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476381483] [2024-11-24 01:10:07,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-24 01:10:07,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476381483] [2024-11-24 01:10:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476381483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:07,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9254686] [2024-11-24 01:10:07,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:07,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:07,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:07,549 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:07,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:10:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:07,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:10:08,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-24 01:10:08,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:08,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9254686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:08,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:10:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632369683] [2024-11-24 01:10:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:08,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:08,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:08,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:08,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:08,139 INFO L87 Difference]: Start difference. First operand 2036 states and 3349 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 01:10:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:08,827 INFO L93 Difference]: Finished difference Result 3950 states and 6622 transitions. [2024-11-24 01:10:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 226 [2024-11-24 01:10:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:08,841 INFO L225 Difference]: With dead ends: 3950 [2024-11-24 01:10:08,842 INFO L226 Difference]: Without dead ends: 2068 [2024-11-24 01:10:08,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:08,853 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 933 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:08,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2527 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:10:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2024-11-24 01:10:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2068. [2024-11-24 01:10:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1663 states have (on average 1.656644618159952) internal successors, (2755), 1697 states have internal predecessors, (2755), 303 states have call successors, (303), 102 states have call predecessors, (303), 101 states have return successors, (343), 284 states have call predecessors, (343), 297 states have call successors, (343) [2024-11-24 01:10:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3401 transitions. [2024-11-24 01:10:08,949 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3401 transitions. Word has length 226 [2024-11-24 01:10:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:08,949 INFO L471 AbstractCegarLoop]: Abstraction has 2068 states and 3401 transitions. [2024-11-24 01:10:08,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 01:10:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3401 transitions. [2024-11-24 01:10:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-24 01:10:08,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:08,958 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:08,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:09,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:09,159 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:09,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:09,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1232107594, now seen corresponding path program 1 times [2024-11-24 01:10:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157821832] [2024-11-24 01:10:09,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-24 01:10:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157821832] [2024-11-24 01:10:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157821832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529609258] [2024-11-24 01:10:09,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:09,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:09,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:09,337 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:09,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:10:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:09,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:10:09,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:10:09,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:09,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529609258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:09,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:10:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197193059] [2024-11-24 01:10:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:09,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:09,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:09,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:09,923 INFO L87 Difference]: Start difference. First operand 2068 states and 3401 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 01:10:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:10,621 INFO L93 Difference]: Finished difference Result 4014 states and 6714 transitions. [2024-11-24 01:10:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 230 [2024-11-24 01:10:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:10,636 INFO L225 Difference]: With dead ends: 4014 [2024-11-24 01:10:10,636 INFO L226 Difference]: Without dead ends: 2100 [2024-11-24 01:10:10,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:10,646 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 935 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:10,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2524 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:10:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-11-24 01:10:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2024-11-24 01:10:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1691 states have (on average 1.657599053814311) internal successors, (2803), 1725 states have internal predecessors, (2803), 303 states have call successors, (303), 106 states have call predecessors, (303), 105 states have return successors, (347), 284 states have call predecessors, (347), 297 states have call successors, (347) [2024-11-24 01:10:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3453 transitions. [2024-11-24 01:10:10,742 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3453 transitions. Word has length 230 [2024-11-24 01:10:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:10,744 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 3453 transitions. [2024-11-24 01:10:10,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 01:10:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3453 transitions. [2024-11-24 01:10:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 01:10:10,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:10,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:10,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:10:10,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 01:10:10,953 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:10,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash -715968696, now seen corresponding path program 1 times [2024-11-24 01:10:10,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:10,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129642139] [2024-11-24 01:10:10,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:10,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:10:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129642139] [2024-11-24 01:10:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129642139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372573392] [2024-11-24 01:10:11,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:11,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:11,052 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:11,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:10:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:11,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:10:11,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:10:11,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:11,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372573392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:11,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:10:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209593222] [2024-11-24 01:10:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:11,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:11,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:11,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:11,624 INFO L87 Difference]: Start difference. First operand 2100 states and 3453 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:12,351 INFO L93 Difference]: Finished difference Result 4078 states and 6806 transitions. [2024-11-24 01:10:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2024-11-24 01:10:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:12,369 INFO L225 Difference]: With dead ends: 4078 [2024-11-24 01:10:12,369 INFO L226 Difference]: Without dead ends: 2132 [2024-11-24 01:10:12,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:12,383 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 931 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:12,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2521 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:10:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2024-11-24 01:10:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2132. [2024-11-24 01:10:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1719 states have (on average 1.658522396742292) internal successors, (2851), 1753 states have internal predecessors, (2851), 303 states have call successors, (303), 110 states have call predecessors, (303), 109 states have return successors, (351), 284 states have call predecessors, (351), 297 states have call successors, (351) [2024-11-24 01:10:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3505 transitions. [2024-11-24 01:10:12,488 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3505 transitions. Word has length 157 [2024-11-24 01:10:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:12,488 INFO L471 AbstractCegarLoop]: Abstraction has 2132 states and 3505 transitions. [2024-11-24 01:10:12,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3505 transitions. [2024-11-24 01:10:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 01:10:12,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:12,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:12,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 01:10:12,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:12,696 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:12,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash -361584398, now seen corresponding path program 1 times [2024-11-24 01:10:12,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:12,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848502030] [2024-11-24 01:10:12,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:10:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848502030] [2024-11-24 01:10:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848502030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:12,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549381428] [2024-11-24 01:10:12,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:12,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:12,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:10:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:13,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:10:13,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:10:13,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549381428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:13,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 01:10:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506238439] [2024-11-24 01:10:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:13,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:10:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:13,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:10:13,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:10:13,216 INFO L87 Difference]: Start difference. First operand 2132 states and 3505 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:10:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:13,316 INFO L93 Difference]: Finished difference Result 4241 states and 6990 transitions. [2024-11-24 01:10:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:13,316 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2024-11-24 01:10:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:13,335 INFO L225 Difference]: With dead ends: 4241 [2024-11-24 01:10:13,335 INFO L226 Difference]: Without dead ends: 2097 [2024-11-24 01:10:13,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:10:13,344 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 7 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:13,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2971 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2024-11-24 01:10:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2097. [2024-11-24 01:10:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1687 states have (on average 1.6490812092471843) internal successors, (2782), 1719 states have internal predecessors, (2782), 302 states have call successors, (302), 110 states have call predecessors, (302), 107 states have return successors, (348), 283 states have call predecessors, (348), 296 states have call successors, (348) [2024-11-24 01:10:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3432 transitions. [2024-11-24 01:10:13,436 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3432 transitions. Word has length 159 [2024-11-24 01:10:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:13,436 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 3432 transitions. [2024-11-24 01:10:13,436 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:10:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3432 transitions. [2024-11-24 01:10:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-24 01:10:13,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:13,444 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:13,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:10:13,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 01:10:13,645 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:13,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash -468488573, now seen corresponding path program 1 times [2024-11-24 01:10:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:13,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10672654] [2024-11-24 01:10:13,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:13,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 01:10:13,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10672654] [2024-11-24 01:10:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10672654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697318875] [2024-11-24 01:10:13,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:13,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:13,906 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:13,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:10:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:14,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:10:14,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-24 01:10:14,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:10:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-24 01:10:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697318875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:10:15,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:10:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-24 01:10:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944174934] [2024-11-24 01:10:15,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:10:15,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:10:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:15,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:10:15,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:10:15,198 INFO L87 Difference]: Start difference. First operand 2097 states and 3432 transitions. Second operand has 12 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 6 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-24 01:10:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:23,902 INFO L93 Difference]: Finished difference Result 9895 states and 16992 transitions. [2024-11-24 01:10:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:10:23,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 6 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) Word has length 239 [2024-11-24 01:10:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:23,961 INFO L225 Difference]: With dead ends: 9895 [2024-11-24 01:10:23,961 INFO L226 Difference]: Without dead ends: 7807 [2024-11-24 01:10:23,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 482 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:10:23,982 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 5242 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 11386 mSolverCounterSat, 1383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 12769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 11386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:23,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5360 Valid, 4261 Invalid, 12769 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1383 Valid, 11386 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-24 01:10:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2024-11-24 01:10:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 6623. [2024-11-24 01:10:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 5234 states have (on average 1.5943828811616354) internal successors, (8345), 5338 states have internal predecessors, (8345), 988 states have call successors, (988), 354 states have call predecessors, (988), 400 states have return successors, (1697), 975 states have call predecessors, (1697), 974 states have call successors, (1697) [2024-11-24 01:10:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 11030 transitions. [2024-11-24 01:10:24,406 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 11030 transitions. Word has length 239 [2024-11-24 01:10:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:24,406 INFO L471 AbstractCegarLoop]: Abstraction has 6623 states and 11030 transitions. [2024-11-24 01:10:24,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 6 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-24 01:10:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 11030 transitions. [2024-11-24 01:10:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:10:24,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:24,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:24,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:10:24,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 01:10:24,622 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:24,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1180840364, now seen corresponding path program 1 times [2024-11-24 01:10:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875105280] [2024-11-24 01:10:24,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:10:24,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875105280] [2024-11-24 01:10:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875105280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:10:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100081058] [2024-11-24 01:10:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:24,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:10:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:24,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:10:24,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:10:24,882 INFO L87 Difference]: Start difference. First operand 6623 states and 11030 transitions. Second operand has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:10:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:25,290 INFO L93 Difference]: Finished difference Result 13260 states and 22088 transitions. [2024-11-24 01:10:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:10:25,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2024-11-24 01:10:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:25,345 INFO L225 Difference]: With dead ends: 13260 [2024-11-24 01:10:25,345 INFO L226 Difference]: Without dead ends: 6745 [2024-11-24 01:10:25,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:25,383 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 126 mSDsluCounter, 4832 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:25,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5823 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:10:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2024-11-24 01:10:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6623. [2024-11-24 01:10:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 5234 states have (on average 1.5943828811616354) internal successors, (8345), 5338 states have internal predecessors, (8345), 988 states have call successors, (988), 354 states have call predecessors, (988), 400 states have return successors, (1697), 975 states have call predecessors, (1697), 974 states have call successors, (1697) [2024-11-24 01:10:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 11030 transitions. [2024-11-24 01:10:25,919 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 11030 transitions. Word has length 161 [2024-11-24 01:10:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:25,920 INFO L471 AbstractCegarLoop]: Abstraction has 6623 states and 11030 transitions. [2024-11-24 01:10:25,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:10:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 11030 transitions. [2024-11-24 01:10:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:10:25,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:25,932 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:25,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:10:25,932 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:25,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash -902134630, now seen corresponding path program 1 times [2024-11-24 01:10:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:25,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129168762] [2024-11-24 01:10:25,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:25,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:10:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:26,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129168762] [2024-11-24 01:10:26,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129168762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:26,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:10:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346082942] [2024-11-24 01:10:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:26,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:10:26,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:26,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:10:26,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:10:26,053 INFO L87 Difference]: Start difference. First operand 6623 states and 11030 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:10:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:26,388 INFO L93 Difference]: Finished difference Result 13201 states and 22003 transitions. [2024-11-24 01:10:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2024-11-24 01:10:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:26,442 INFO L225 Difference]: With dead ends: 13201 [2024-11-24 01:10:26,442 INFO L226 Difference]: Without dead ends: 6581 [2024-11-24 01:10:26,478 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 [2024-11-24 01:10:26,479 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 8 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:26,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2970 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-11-24 01:10:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6581. [2024-11-24 01:10:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 5195 states have (on average 1.5923002887391722) internal successors, (8272), 5297 states have internal predecessors, (8272), 987 states have call successors, (987), 354 states have call predecessors, (987), 398 states have return successors, (1694), 974 states have call predecessors, (1694), 973 states have call successors, (1694) [2024-11-24 01:10:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 10953 transitions. [2024-11-24 01:10:26,889 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 10953 transitions. Word has length 161 [2024-11-24 01:10:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:26,889 INFO L471 AbstractCegarLoop]: Abstraction has 6581 states and 10953 transitions. [2024-11-24 01:10:26,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:10:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 10953 transitions. [2024-11-24 01:10:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 01:10:26,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:26,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:26,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:10:26,901 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:26,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2052847643, now seen corresponding path program 1 times [2024-11-24 01:10:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200979215] [2024-11-24 01:10:26,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200979215] [2024-11-24 01:10:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200979215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298313260] [2024-11-24 01:10:27,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:27,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:27,397 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:27,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 01:10:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:27,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:10:27,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:10:28,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:28,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298313260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:28,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:28,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-24 01:10:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048268190] [2024-11-24 01:10:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:28,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:10:28,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:28,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:10:28,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:10:28,167 INFO L87 Difference]: Start difference. First operand 6581 states and 10953 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-24 01:10:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:31,199 INFO L93 Difference]: Finished difference Result 13353 states and 22507 transitions. [2024-11-24 01:10:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2024-11-24 01:10:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:31,267 INFO L225 Difference]: With dead ends: 13353 [2024-11-24 01:10:31,267 INFO L226 Difference]: Without dead ends: 6849 [2024-11-24 01:10:31,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:10:31,321 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 2321 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:31,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 1147 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:10:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2024-11-24 01:10:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6457. [2024-11-24 01:10:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6457 states, 4949 states have (on average 1.5910284906041625) internal successors, (7874), 5107 states have internal predecessors, (7874), 1153 states have call successors, (1153), 306 states have call predecessors, (1153), 354 states have return successors, (1690), 1120 states have call predecessors, (1690), 1139 states have call successors, (1690) [2024-11-24 01:10:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 10717 transitions. [2024-11-24 01:10:31,896 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 10717 transitions. Word has length 162 [2024-11-24 01:10:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:31,897 INFO L471 AbstractCegarLoop]: Abstraction has 6457 states and 10717 transitions. [2024-11-24 01:10:31,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-24 01:10:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 10717 transitions. [2024-11-24 01:10:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 01:10:31,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:31,904 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:31,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 01:10:32,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:10:32,105 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:32,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1320880217, now seen corresponding path program 1 times [2024-11-24 01:10:32,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:32,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157212742] [2024-11-24 01:10:32,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157212742] [2024-11-24 01:10:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157212742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101640738] [2024-11-24 01:10:32,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:32,570 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:32,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:10:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:33,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:10:33,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:10:33,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101640738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:10:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377420627] [2024-11-24 01:10:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:33,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:10:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:33,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:10:33,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:10:33,235 INFO L87 Difference]: Start difference. First operand 6457 states and 10717 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:10:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:39,372 INFO L93 Difference]: Finished difference Result 22540 states and 38696 transitions. [2024-11-24 01:10:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:10:39,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2024-11-24 01:10:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:39,494 INFO L225 Difference]: With dead ends: 22540 [2024-11-24 01:10:39,494 INFO L226 Difference]: Without dead ends: 16139 [2024-11-24 01:10:39,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:10:39,549 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 3153 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 7152 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 7892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 7152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:39,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3266 Valid, 2454 Invalid, 7892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [740 Valid, 7152 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 01:10:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16139 states. [2024-11-24 01:10:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16139 to 15017. [2024-11-24 01:10:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15017 states, 11485 states have (on average 1.5780583369612537) internal successors, (18124), 11838 states have internal predecessors, (18124), 2676 states have call successors, (2676), 716 states have call predecessors, (2676), 855 states have return successors, (4209), 2627 states have call predecessors, (4209), 2656 states have call successors, (4209) [2024-11-24 01:10:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15017 states to 15017 states and 25009 transitions. [2024-11-24 01:10:40,862 INFO L78 Accepts]: Start accepts. Automaton has 15017 states and 25009 transitions. Word has length 162 [2024-11-24 01:10:40,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:40,863 INFO L471 AbstractCegarLoop]: Abstraction has 15017 states and 25009 transitions. [2024-11-24 01:10:40,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:10:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15017 states and 25009 transitions. [2024-11-24 01:10:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:10:40,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:40,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:40,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:10:41,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:10:41,068 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:41,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1829180415, now seen corresponding path program 1 times [2024-11-24 01:10:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284722643] [2024-11-24 01:10:41,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284722643] [2024-11-24 01:10:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284722643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280689913] [2024-11-24 01:10:41,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:41,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:41,455 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:41,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 01:10:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:42,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:10:42,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:10:42,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280689913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:42,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-24 01:10:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388767790] [2024-11-24 01:10:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:42,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:42,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:42,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:10:42,336 INFO L87 Difference]: Start difference. First operand 15017 states and 25009 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-24 01:10:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:43,240 INFO L93 Difference]: Finished difference Result 33760 states and 56916 transitions. [2024-11-24 01:10:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 167 [2024-11-24 01:10:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:43,362 INFO L225 Difference]: With dead ends: 33760 [2024-11-24 01:10:43,362 INFO L226 Difference]: Without dead ends: 19973 [2024-11-24 01:10:43,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:10:43,434 INFO L435 NwaCegarLoop]: 1810 mSDtfsCounter, 972 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2806 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 [2024-11-24 01:10:43,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2806 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19973 states. [2024-11-24 01:10:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19973 to 19877. [2024-11-24 01:10:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19877 states, 15247 states have (on average 1.5790647340460418) internal successors, (24076), 15670 states have internal predecessors, (24076), 3512 states have call successors, (3512), 940 states have call predecessors, (3512), 1117 states have return successors, (5778), 3481 states have call predecessors, (5778), 3484 states have call successors, (5778) [2024-11-24 01:10:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19877 states to 19877 states and 33366 transitions. [2024-11-24 01:10:45,317 INFO L78 Accepts]: Start accepts. Automaton has 19877 states and 33366 transitions. Word has length 167 [2024-11-24 01:10:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:45,318 INFO L471 AbstractCegarLoop]: Abstraction has 19877 states and 33366 transitions. [2024-11-24 01:10:45,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-24 01:10:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 19877 states and 33366 transitions. [2024-11-24 01:10:45,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:10:45,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:45,326 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:45,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:45,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:10:45,531 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:45,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash -414802883, now seen corresponding path program 1 times [2024-11-24 01:10:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127588613] [2024-11-24 01:10:45,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:46,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:46,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127588613] [2024-11-24 01:10:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127588613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:46,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756882509] [2024-11-24 01:10:46,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:46,054 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 01:10:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:46,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:10:46,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:10:46,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756882509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:46,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:46,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-24 01:10:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657063606] [2024-11-24 01:10:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:46,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:10:46,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:46,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:10:46,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:10:46,587 INFO L87 Difference]: Start difference. First operand 19877 states and 33366 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:47,865 INFO L93 Difference]: Finished difference Result 19971 states and 33662 transitions. [2024-11-24 01:10:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2024-11-24 01:10:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:48,121 INFO L225 Difference]: With dead ends: 19971 [2024-11-24 01:10:48,121 INFO L226 Difference]: Without dead ends: 19968 [2024-11-24 01:10:48,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:10:48,133 INFO L435 NwaCegarLoop]: 1813 mSDtfsCounter, 943 mSDsluCounter, 6205 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 8018 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:48,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 8018 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:10:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19968 states. [2024-11-24 01:10:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19968 to 19877. [2024-11-24 01:10:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19877 states, 15247 states have (on average 1.5770971338623991) internal successors, (24046), 15670 states have internal predecessors, (24046), 3512 states have call successors, (3512), 940 states have call predecessors, (3512), 1117 states have return successors, (5778), 3481 states have call predecessors, (5778), 3484 states have call successors, (5778) [2024-11-24 01:10:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19877 states to 19877 states and 33336 transitions. [2024-11-24 01:10:49,210 INFO L78 Accepts]: Start accepts. Automaton has 19877 states and 33336 transitions. Word has length 167 [2024-11-24 01:10:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:49,211 INFO L471 AbstractCegarLoop]: Abstraction has 19877 states and 33336 transitions. [2024-11-24 01:10:49,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 19877 states and 33336 transitions. [2024-11-24 01:10:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:10:49,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:49,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:49,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-24 01:10:49,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:49,415 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:49,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 985174913, now seen corresponding path program 1 times [2024-11-24 01:10:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:49,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497367447] [2024-11-24 01:10:49,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497367447] [2024-11-24 01:10:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497367447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454867289] [2024-11-24 01:10:49,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:49,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:49,756 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:49,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 01:10:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:50,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:10:50,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:10:50,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454867289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:10:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860544612] [2024-11-24 01:10:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:50,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:10:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:50,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:10:50,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:10:50,171 INFO L87 Difference]: Start difference. First operand 19877 states and 33336 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:51,131 INFO L93 Difference]: Finished difference Result 39888 states and 68416 transitions. [2024-11-24 01:10:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2024-11-24 01:10:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:51,310 INFO L225 Difference]: With dead ends: 39888 [2024-11-24 01:10:51,311 INFO L226 Difference]: Without dead ends: 20081 [2024-11-24 01:10:51,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:10:51,643 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 25 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:51,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2961 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20081 states. [2024-11-24 01:10:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20081 to 20081. [2024-11-24 01:10:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20081 states, 15417 states have (on average 1.5729389634818707) internal successors, (24250), 15840 states have internal predecessors, (24250), 3512 states have call successors, (3512), 974 states have call predecessors, (3512), 1151 states have return successors, (5778), 3481 states have call predecessors, (5778), 3484 states have call successors, (5778) [2024-11-24 01:10:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 33540 transitions. [2024-11-24 01:10:53,144 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 33540 transitions. Word has length 167 [2024-11-24 01:10:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:53,144 INFO L471 AbstractCegarLoop]: Abstraction has 20081 states and 33540 transitions. [2024-11-24 01:10:53,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 01:10:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 33540 transitions. [2024-11-24 01:10:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 01:10:53,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:53,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:53,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 01:10:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:53,351 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -21319904, now seen corresponding path program 1 times [2024-11-24 01:10:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539549161] [2024-11-24 01:10:53,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:10:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539549161] [2024-11-24 01:10:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539549161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807529488] [2024-11-24 01:10:53,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:53,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:53,766 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:53,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 01:10:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:54,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:10:54,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:10:54,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:54,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807529488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:54,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:54,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:10:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238928161] [2024-11-24 01:10:54,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:54,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:10:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:54,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:10:54,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:10:54,545 INFO L87 Difference]: Start difference. First operand 20081 states and 33540 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:10:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:59,797 INFO L93 Difference]: Finished difference Result 38818 states and 64920 transitions. [2024-11-24 01:10:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:10:59,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2024-11-24 01:10:59,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:59,936 INFO L225 Difference]: With dead ends: 38818 [2024-11-24 01:10:59,936 INFO L226 Difference]: Without dead ends: 20605 [2024-11-24 01:11:00,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:11:00,030 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 3272 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 5220 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 5988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 5220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:00,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 1658 Invalid, 5988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 5220 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:11:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20605 states. [2024-11-24 01:11:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20605 to 20135. [2024-11-24 01:11:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20135 states, 15457 states have (on average 1.5726208190463868) internal successors, (24308), 15880 states have internal predecessors, (24308), 3524 states have call successors, (3524), 974 states have call predecessors, (3524), 1153 states have return successors, (5795), 3493 states have call predecessors, (5795), 3496 states have call successors, (5795) [2024-11-24 01:11:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20135 states to 20135 states and 33627 transitions. [2024-11-24 01:11:01,031 INFO L78 Accepts]: Start accepts. Automaton has 20135 states and 33627 transitions. Word has length 168 [2024-11-24 01:11:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:01,031 INFO L471 AbstractCegarLoop]: Abstraction has 20135 states and 33627 transitions. [2024-11-24 01:11:01,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:11:01,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20135 states and 33627 transitions. [2024-11-24 01:11:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:11:01,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:01,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:01,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-24 01:11:01,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:01,237 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:01,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1157709035, now seen corresponding path program 1 times [2024-11-24 01:11:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577162275] [2024-11-24 01:11:01,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:01,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:11:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577162275] [2024-11-24 01:11:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577162275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392716991] [2024-11-24 01:11:01,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:01,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:01,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:01,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:01,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 01:11:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:01,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:11:01,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:11:02,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:11:02,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392716991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:02,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:11:02,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-11-24 01:11:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819527503] [2024-11-24 01:11:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:02,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:11:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:02,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:11:02,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:11:02,156 INFO L87 Difference]: Start difference. First operand 20135 states and 33627 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 01:11:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:04,553 INFO L93 Difference]: Finished difference Result 45835 states and 78266 transitions. [2024-11-24 01:11:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:11:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2024-11-24 01:11:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:04,749 INFO L225 Difference]: With dead ends: 45835 [2024-11-24 01:11:04,749 INFO L226 Difference]: Without dead ends: 25759 [2024-11-24 01:11:04,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:11:04,891 INFO L435 NwaCegarLoop]: 1357 mSDtfsCounter, 1730 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:04,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 5748 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:11:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25759 states. [2024-11-24 01:11:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25759 to 25462. [2024-11-24 01:11:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25462 states, 19984 states have (on average 1.573558847077662) internal successors, (31446), 20445 states have internal predecessors, (31446), 3861 states have call successors, (3861), 1348 states have call predecessors, (3861), 1616 states have return successors, (8123), 3881 states have call predecessors, (8123), 3813 states have call successors, (8123) [2024-11-24 01:11:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25462 states to 25462 states and 43430 transitions. [2024-11-24 01:11:06,550 INFO L78 Accepts]: Start accepts. Automaton has 25462 states and 43430 transitions. Word has length 169 [2024-11-24 01:11:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:06,551 INFO L471 AbstractCegarLoop]: Abstraction has 25462 states and 43430 transitions. [2024-11-24 01:11:06,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 01:11:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25462 states and 43430 transitions. [2024-11-24 01:11:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-24 01:11:06,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:06,554 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:06,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-24 01:11:06,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:06,755 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:06,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1397038090, now seen corresponding path program 1 times [2024-11-24 01:11:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103149741] [2024-11-24 01:11:06,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:11:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103149741] [2024-11-24 01:11:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103149741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282934358] [2024-11-24 01:11:07,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:07,024 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:07,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-24 01:11:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:07,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:11:07,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:11:07,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:11:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282934358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:07,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:11:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:11:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992413430] [2024-11-24 01:11:07,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:07,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:11:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:07,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:11:07,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:11:07,691 INFO L87 Difference]: Start difference. First operand 25462 states and 43430 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:11:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:14,285 INFO L93 Difference]: Finished difference Result 48803 states and 83144 transitions. [2024-11-24 01:11:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:11:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 171 [2024-11-24 01:11:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:14,468 INFO L225 Difference]: With dead ends: 48803 [2024-11-24 01:11:14,468 INFO L226 Difference]: Without dead ends: 26053 [2024-11-24 01:11:14,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:11:14,599 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 3133 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 5487 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3247 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 6233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 5487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:14,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3247 Valid, 1598 Invalid, 6233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 5487 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 01:11:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26053 states. [2024-11-24 01:11:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26053 to 25450. [2024-11-24 01:11:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25450 states, 19972 states have (on average 1.5727017824954936) internal successors, (31410), 20433 states have internal predecessors, (31410), 3861 states have call successors, (3861), 1348 states have call predecessors, (3861), 1616 states have return successors, (8123), 3881 states have call predecessors, (8123), 3813 states have call successors, (8123) [2024-11-24 01:11:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25450 states to 25450 states and 43394 transitions. [2024-11-24 01:11:15,970 INFO L78 Accepts]: Start accepts. Automaton has 25450 states and 43394 transitions. Word has length 171 [2024-11-24 01:11:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:15,970 INFO L471 AbstractCegarLoop]: Abstraction has 25450 states and 43394 transitions. [2024-11-24 01:11:15,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:11:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 25450 states and 43394 transitions. [2024-11-24 01:11:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-24 01:11:15,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:15,976 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:15,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-24 01:11:16,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:16,176 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:16,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 131401924, now seen corresponding path program 1 times [2024-11-24 01:11:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267822408] [2024-11-24 01:11:16,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-24 01:11:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267822408] [2024-11-24 01:11:16,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267822408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263177185] [2024-11-24 01:11:16,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:16,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:16,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:16,776 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:16,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 01:11:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:17,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:11:17,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:11:17,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:11:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263177185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:11:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:11:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716664186] [2024-11-24 01:11:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:11:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:17,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:11:17,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:11:17,355 INFO L87 Difference]: Start difference. First operand 25450 states and 43394 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:11:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:24,958 INFO L93 Difference]: Finished difference Result 73457 states and 135384 transitions. [2024-11-24 01:11:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:11:24,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 172 [2024-11-24 01:11:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:25,370 INFO L225 Difference]: With dead ends: 73457 [2024-11-24 01:11:25,370 INFO L226 Difference]: Without dead ends: 48046 [2024-11-24 01:11:25,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:11:25,943 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 5809 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 1528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5919 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 4807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1528 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:25,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5919 Valid, 1089 Invalid, 4807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1528 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:11:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48046 states. [2024-11-24 01:11:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48046 to 42605. [2024-11-24 01:11:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42605 states, 33381 states have (on average 1.5635241604505556) internal successors, (52192), 34248 states have internal predecessors, (52192), 6486 states have call successors, (6486), 2292 states have call predecessors, (6486), 2737 states have return successors, (12757), 6452 states have call predecessors, (12757), 6433 states have call successors, (12757) [2024-11-24 01:11:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42605 states to 42605 states and 71435 transitions. [2024-11-24 01:11:29,187 INFO L78 Accepts]: Start accepts. Automaton has 42605 states and 71435 transitions. Word has length 172 [2024-11-24 01:11:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:29,188 INFO L471 AbstractCegarLoop]: Abstraction has 42605 states and 71435 transitions. [2024-11-24 01:11:29,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-24 01:11:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42605 states and 71435 transitions. [2024-11-24 01:11:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-24 01:11:29,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:29,192 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:29,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-24 01:11:29,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-24 01:11:29,393 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:29,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2075282336, now seen corresponding path program 1 times [2024-11-24 01:11:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:29,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603299105] [2024-11-24 01:11:29,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:11:29,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603299105] [2024-11-24 01:11:29,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603299105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952397133] [2024-11-24 01:11:29,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:29,956 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:29,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396c1698-e3ab-4033-9472-049c5ab9f979/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-24 01:11:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:30,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:11:30,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:11:30,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:11:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952397133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:11:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:11:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626261879] [2024-11-24 01:11:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:30,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:11:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:30,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:11:30,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:11:30,375 INFO L87 Difference]: Start difference. First operand 42605 states and 71435 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)