./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:58:22,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:58:22,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:58:22,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:58:22,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:58:22,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:58:22,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:58:22,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:58:22,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:58:22,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:58:22,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:58:22,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:58:22,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:58:22,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:58:22,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:58:22,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:58:22,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:58:22,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:58:22,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:58:22,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:58:22,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:58:22,709 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:58:22,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:58:22,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:58:22,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:58:22,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:58:22,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:58:22,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:58:22,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:58:22,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:58:22,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:58:22,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:58:22,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:58:22,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:58:22,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:58:22,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:58:22,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:58:22,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:58:22,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:58:22,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:58:22,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:58:22,712 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_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2024-11-28 03:58:23,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:58:23,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:58:23,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:58:23,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:58:23,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:58:23,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-11-28 03:58:26,803 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/data/afb1b70fb/b93a0900ad4c4be887051c11a9903404/FLAG3cf84d084 [2024-11-28 03:58:27,383 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:58:27,383 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-11-28 03:58:27,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/data/afb1b70fb/b93a0900ad4c4be887051c11a9903404/FLAG3cf84d084 [2024-11-28 03:58:27,456 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/data/afb1b70fb/b93a0900ad4c4be887051c11a9903404 [2024-11-28 03:58:27,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:58:27,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:58:27,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:58:27,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:58:27,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:58:27,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:58:27" (1/1) ... [2024-11-28 03:58:27,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65337601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:27, skipping insertion in model container [2024-11-28 03:58:27,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:58:27" (1/1) ... [2024-11-28 03:58:27,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:58:28,343 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_912ee7c1-7386-4eba-842e-763235f52791/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-11-28 03:58:28,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:58:28,386 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:58:28,397 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-28 03:58:28,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [67] [2024-11-28 03:58:28,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [168] [2024-11-28 03:58:28,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [520] [2024-11-28 03:58:28,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2024-11-28 03:58:28,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2407] [2024-11-28 03:58:28,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3068] [2024-11-28 03:58:28,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3186] [2024-11-28 03:58:28,403 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3195] [2024-11-28 03:58:28,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3230] [2024-11-28 03:58:28,551 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_912ee7c1-7386-4eba-842e-763235f52791/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-11-28 03:58:28,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:58:28,613 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:58:28,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28 WrapperNode [2024-11-28 03:58:28,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:58:28,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:58:28,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:58:28,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:58:28,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,721 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 861 [2024-11-28 03:58:28,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:58:28,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:58:28,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:58:28,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:58:28,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,787 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 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]. [2024-11-28 03:58:28,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,815 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:58:28,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:58:28,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:58:28,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:58:28,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (1/1) ... [2024-11-28 03:58:28,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:58:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:58:28,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:58:28,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:58:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:58:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 03:58:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 03:58:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 03:58:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 03:58:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 03:58:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 03:58:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 03:58:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 03:58:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 03:58:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 03:58:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 03:58:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 03:58:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 03:58:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 03:58:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 03:58:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 03:58:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 03:58:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 03:58:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 03:58:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-28 03:58:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-28 03:58:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 03:58:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 03:58:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 03:58:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 03:58:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:58:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:58:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:58:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 03:58:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 03:58:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 03:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 03:58:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 03:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 03:58:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 03:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 03:58:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 03:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:58:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:58:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 03:58:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 03:58:29,239 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:58:29,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:58:31,118 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-28 03:58:31,119 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:58:31,163 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:58:31,163 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:58:31,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:58:31 BoogieIcfgContainer [2024-11-28 03:58:31,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:58:31,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:58:31,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:58:31,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:58:31,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:58:27" (1/3) ... [2024-11-28 03:58:31,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba737a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:58:31, skipping insertion in model container [2024-11-28 03:58:31,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:58:28" (2/3) ... [2024-11-28 03:58:31,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba737a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:58:31, skipping insertion in model container [2024-11-28 03:58:31,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:58:31" (3/3) ... [2024-11-28 03:58:31,177 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2024-11-28 03:58:31,194 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:58:31,197 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product26.cil.c that has 26 procedures, 577 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:58:31,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:58:31,303 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;@2f6f40c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:58:31,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:58:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 448 states have (on average 1.6875) internal successors, (756), 468 states have internal predecessors, (756), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 03:58:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:58:31,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:31,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:31,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:31,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash -48130802, now seen corresponding path program 1 times [2024-11-28 03:58:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:31,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856458564] [2024-11-28 03:58:31,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:32,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856458564] [2024-11-28 03:58:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856458564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:32,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:32,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:58:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810833442] [2024-11-28 03:58:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:32,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:58:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:32,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:58:32,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:58:32,497 INFO L87 Difference]: Start difference. First operand has 577 states, 448 states have (on average 1.6875) internal successors, (756), 468 states have internal predecessors, (756), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:32,952 INFO L93 Difference]: Finished difference Result 1151 states and 1932 transitions. [2024-11-28 03:58:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-11-28 03:58:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:32,985 INFO L225 Difference]: With dead ends: 1151 [2024-11-28 03:58:32,986 INFO L226 Difference]: Without dead ends: 582 [2024-11-28 03:58:33,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:33,006 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 91 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:33,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5567 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-28 03:58:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2024-11-28 03:58:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 471 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-28 03:58:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 962 transitions. [2024-11-28 03:58:33,153 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 962 transitions. Word has length 63 [2024-11-28 03:58:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:33,155 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 962 transitions. [2024-11-28 03:58:33,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 962 transitions. [2024-11-28 03:58:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:58:33,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:33,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:33,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:58:33,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1533612518, now seen corresponding path program 1 times [2024-11-28 03:58:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806227812] [2024-11-28 03:58:33,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:33,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806227812] [2024-11-28 03:58:33,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806227812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:33,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:58:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563669820] [2024-11-28 03:58:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:33,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:58:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:33,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:58:33,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:58:33,638 INFO L87 Difference]: Start difference. First operand 580 states and 962 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:33,887 INFO L93 Difference]: Finished difference Result 1155 states and 1927 transitions. [2024-11-28 03:58:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-28 03:58:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:33,901 INFO L225 Difference]: With dead ends: 1155 [2024-11-28 03:58:33,901 INFO L226 Difference]: Without dead ends: 591 [2024-11-28 03:58:33,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:33,910 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 90 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:33,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5562 Invalid, 82 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-28 03:58:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 580. [2024-11-28 03:58:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 471 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-28 03:58:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 962 transitions. [2024-11-28 03:58:33,996 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 962 transitions. Word has length 64 [2024-11-28 03:58:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:33,997 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 962 transitions. [2024-11-28 03:58:33,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 962 transitions. [2024-11-28 03:58:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:58:34,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:34,001 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:34,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:58:34,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:34,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:34,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1370720686, now seen corresponding path program 1 times [2024-11-28 03:58:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:34,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791583989] [2024-11-28 03:58:34,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:34,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:34,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:34,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791583989] [2024-11-28 03:58:34,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791583989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:34,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:34,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483259339] [2024-11-28 03:58:34,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:34,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:34,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:34,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:34,316 INFO L87 Difference]: Start difference. First operand 580 states and 962 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:34,457 INFO L93 Difference]: Finished difference Result 1142 states and 1905 transitions. [2024-11-28 03:58:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:34,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-28 03:58:34,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:34,473 INFO L225 Difference]: With dead ends: 1142 [2024-11-28 03:58:34,473 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 03:58:34,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:34,482 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 14 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2791 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 [2024-11-28 03:58:34,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2791 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 03:58:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-28 03:58:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 424 states have (on average 1.6627358490566038) internal successors, (705), 442 states have internal predecessors, (705), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 906 transitions. [2024-11-28 03:58:34,547 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 906 transitions. Word has length 64 [2024-11-28 03:58:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:34,547 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 906 transitions. [2024-11-28 03:58:34,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 906 transitions. [2024-11-28 03:58:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 03:58:34,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:34,549 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:34,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:58:34,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:34,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1985286606, now seen corresponding path program 1 times [2024-11-28 03:58:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:34,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662489171] [2024-11-28 03:58:34,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662489171] [2024-11-28 03:58:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662489171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:34,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:34,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:58:34,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564542320] [2024-11-28 03:58:34,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:34,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:58:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:34,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:58:34,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:58:34,980 INFO L87 Difference]: Start difference. First operand 550 states and 906 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:35,141 INFO L93 Difference]: Finished difference Result 1093 states and 1811 transitions. [2024-11-28 03:58:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:35,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-28 03:58:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:35,149 INFO L225 Difference]: With dead ends: 1093 [2024-11-28 03:58:35,150 INFO L226 Difference]: Without dead ends: 544 [2024-11-28 03:58:35,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:35,158 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 63 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:35,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5318 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-28 03:58:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2024-11-28 03:58:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 418 states have (on average 1.6555023923444976) internal successors, (692), 436 states have internal predecessors, (692), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 893 transitions. [2024-11-28 03:58:35,212 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 893 transitions. Word has length 65 [2024-11-28 03:58:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:35,212 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 893 transitions. [2024-11-28 03:58:35,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 893 transitions. [2024-11-28 03:58:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:58:35,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:35,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:35,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:58:35,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:35,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -415344246, now seen corresponding path program 1 times [2024-11-28 03:58:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100857909] [2024-11-28 03:58:35,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100857909] [2024-11-28 03:58:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100857909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:58:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948964352] [2024-11-28 03:58:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:35,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:58:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:35,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:58:35,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:58:35,529 INFO L87 Difference]: Start difference. First operand 544 states and 893 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:35,655 INFO L93 Difference]: Finished difference Result 1081 states and 1785 transitions. [2024-11-28 03:58:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-28 03:58:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:35,662 INFO L225 Difference]: With dead ends: 1081 [2024-11-28 03:58:35,662 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:35,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:35,667 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 49 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:35,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5258 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6480582524271845) internal successors, (679), 430 states have internal predecessors, (679), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 880 transitions. [2024-11-28 03:58:35,701 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 880 transitions. Word has length 66 [2024-11-28 03:58:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:35,701 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 880 transitions. [2024-11-28 03:58:35,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 880 transitions. [2024-11-28 03:58:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:58:35,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:35,703 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:35,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:58:35,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:35,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2077683381, now seen corresponding path program 1 times [2024-11-28 03:58:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:35,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838626654] [2024-11-28 03:58:35,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:36,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838626654] [2024-11-28 03:58:36,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838626654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:36,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:36,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:58:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118200066] [2024-11-28 03:58:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:36,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:58:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:36,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:58:36,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:58:36,004 INFO L87 Difference]: Start difference. First operand 538 states and 880 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:36,116 INFO L93 Difference]: Finished difference Result 1069 states and 1759 transitions. [2024-11-28 03:58:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-28 03:58:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:36,123 INFO L225 Difference]: With dead ends: 1069 [2024-11-28 03:58:36,123 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:36,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:36,128 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 24 mSDsluCounter, 4338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:36,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5210 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.645631067961165) internal successors, (678), 430 states have internal predecessors, (678), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 879 transitions. [2024-11-28 03:58:36,164 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 879 transitions. Word has length 66 [2024-11-28 03:58:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:36,166 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 879 transitions. [2024-11-28 03:58:36,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 879 transitions. [2024-11-28 03:58:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 03:58:36,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:36,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:36,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:58:36,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:36,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash -5105834, now seen corresponding path program 1 times [2024-11-28 03:58:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776229043] [2024-11-28 03:58:36,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:36,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776229043] [2024-11-28 03:58:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776229043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:36,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215039655] [2024-11-28 03:58:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:36,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:36,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:36,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:36,323 INFO L87 Difference]: Start difference. First operand 538 states and 879 transitions. 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:36,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:36,412 INFO L93 Difference]: Finished difference Result 1060 states and 1744 transitions. [2024-11-28 03:58:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:58:36,414 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-28 03:58:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:36,421 INFO L225 Difference]: With dead ends: 1060 [2024-11-28 03:58:36,422 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:36,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:36,426 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 15 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:36,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2577 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6432038834951457) internal successors, (677), 430 states have internal predecessors, (677), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 878 transitions. [2024-11-28 03:58:36,463 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 878 transitions. Word has length 67 [2024-11-28 03:58:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:36,463 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 878 transitions. [2024-11-28 03:58:36,464 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 878 transitions. [2024-11-28 03:58:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:58:36,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:36,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:36,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:58:36,470 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:36,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1029852138, now seen corresponding path program 1 times [2024-11-28 03:58:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:36,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021537716] [2024-11-28 03:58:36,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021537716] [2024-11-28 03:58:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021537716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15119426] [2024-11-28 03:58:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:36,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:36,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:36,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:36,662 INFO L87 Difference]: Start difference. First operand 538 states and 878 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:36,761 INFO L93 Difference]: Finished difference Result 1060 states and 1742 transitions. [2024-11-28 03:58:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:58:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-28 03:58:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:36,771 INFO L225 Difference]: With dead ends: 1060 [2024-11-28 03:58:36,772 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:36,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:36,777 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 14 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:36,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2579 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6407766990291262) internal successors, (676), 430 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 877 transitions. [2024-11-28 03:58:36,825 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 877 transitions. Word has length 68 [2024-11-28 03:58:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:36,826 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 877 transitions. [2024-11-28 03:58:36,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 877 transitions. [2024-11-28 03:58:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 03:58:36,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:36,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:36,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:58:36,832 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:36,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1208719205, now seen corresponding path program 1 times [2024-11-28 03:58:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:36,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516971231] [2024-11-28 03:58:36,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516971231] [2024-11-28 03:58:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516971231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:36,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:36,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:36,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623774296] [2024-11-28 03:58:36,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:36,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:36,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:36,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:36,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:36,997 INFO L87 Difference]: Start difference. First operand 538 states and 877 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:37,067 INFO L93 Difference]: Finished difference Result 1060 states and 1740 transitions. [2024-11-28 03:58:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:58:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-28 03:58:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:37,074 INFO L225 Difference]: With dead ends: 1060 [2024-11-28 03:58:37,075 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:37,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:37,079 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 13 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:37,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2581 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6383495145631068) internal successors, (675), 430 states have internal predecessors, (675), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 876 transitions. [2024-11-28 03:58:37,117 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 876 transitions. Word has length 69 [2024-11-28 03:58:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:37,117 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 876 transitions. [2024-11-28 03:58:37,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 876 transitions. [2024-11-28 03:58:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:58:37,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:37,120 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:37,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:58:37,120 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:37,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1847484209, now seen corresponding path program 1 times [2024-11-28 03:58:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601036395] [2024-11-28 03:58:37,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601036395] [2024-11-28 03:58:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601036395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:37,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466211955] [2024-11-28 03:58:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:37,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:37,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:37,292 INFO L87 Difference]: Start difference. First operand 538 states and 876 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:37,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:37,358 INFO L93 Difference]: Finished difference Result 1060 states and 1738 transitions. [2024-11-28 03:58:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:58:37,359 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-28 03:58:37,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:37,364 INFO L225 Difference]: With dead ends: 1060 [2024-11-28 03:58:37,364 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 03:58:37,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:37,369 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 12 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2583 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 [2024-11-28 03:58:37,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2583 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 03:58:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-28 03:58:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6359223300970873) internal successors, (674), 430 states have internal predecessors, (674), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:58:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 875 transitions. [2024-11-28 03:58:37,399 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 875 transitions. Word has length 70 [2024-11-28 03:58:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:37,400 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 875 transitions. [2024-11-28 03:58:37,400 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:58:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 875 transitions. [2024-11-28 03:58:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 03:58:37,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:37,402 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:37,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:58:37,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:37,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash -136892960, now seen corresponding path program 1 times [2024-11-28 03:58:37,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:37,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765775321] [2024-11-28 03:58:37,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:37,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:58:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765775321] [2024-11-28 03:58:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765775321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:58:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124344849] [2024-11-28 03:58:37,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:37,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:37,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:58:37,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:58:37,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:58:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:38,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:58:38,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:58:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:58:38,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:58:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124344849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:38,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:58:38,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 03:58:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37190188] [2024-11-28 03:58:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:38,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:38,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:38,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:58:38,347 INFO L87 Difference]: Start difference. First operand 538 states and 875 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:38,455 INFO L93 Difference]: Finished difference Result 1526 states and 2515 transitions. [2024-11-28 03:58:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:38,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2024-11-28 03:58:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:38,470 INFO L225 Difference]: With dead ends: 1526 [2024-11-28 03:58:38,471 INFO L226 Difference]: Without dead ends: 1006 [2024-11-28 03:58:38,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:58:38,478 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 839 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:38,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1658 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2024-11-28 03:58:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 991. [2024-11-28 03:58:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 766 states have (on average 1.650130548302872) internal successors, (1264), 801 states have internal predecessors, (1264), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2024-11-28 03:58:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1626 transitions. [2024-11-28 03:58:38,551 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1626 transitions. Word has length 71 [2024-11-28 03:58:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:38,553 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1626 transitions. [2024-11-28 03:58:38,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1626 transitions. [2024-11-28 03:58:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:58:38,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:38,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:38,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:58:38,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:38,757 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:38,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -960121851, now seen corresponding path program 1 times [2024-11-28 03:58:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851429023] [2024-11-28 03:58:38,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:58:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851429023] [2024-11-28 03:58:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851429023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:58:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904994022] [2024-11-28 03:58:39,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:39,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:39,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:58:39,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:58:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:58:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:39,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:58:39,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:58:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:58:39,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:58:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904994022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:58:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 03:58:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306332216] [2024-11-28 03:58:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:39,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:39,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:39,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:58:39,734 INFO L87 Difference]: Start difference. First operand 991 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:39,883 INFO L93 Difference]: Finished difference Result 2432 states and 4019 transitions. [2024-11-28 03:58:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-28 03:58:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:39,904 INFO L225 Difference]: With dead ends: 2432 [2024-11-28 03:58:39,904 INFO L226 Difference]: Without dead ends: 1459 [2024-11-28 03:58:39,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:58:39,913 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 840 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:39,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1712 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2024-11-28 03:58:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1411. [2024-11-28 03:58:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1093 states have (on average 1.6633119853613907) internal successors, (1818), 1145 states have internal predecessors, (1818), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2024-11-28 03:58:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2335 transitions. [2024-11-28 03:58:40,053 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2335 transitions. Word has length 72 [2024-11-28 03:58:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:40,053 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2335 transitions. [2024-11-28 03:58:40,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:40,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2335 transitions. [2024-11-28 03:58:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:58:40,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:40,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:40,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:58:40,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:40,262 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:40,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1026570261, now seen corresponding path program 1 times [2024-11-28 03:58:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:40,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240322591] [2024-11-28 03:58:40,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:40,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:40,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240322591] [2024-11-28 03:58:40,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240322591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:40,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:40,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:58:40,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984649261] [2024-11-28 03:58:40,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:40,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:58:40,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:40,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:58:40,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:58:40,598 INFO L87 Difference]: Start difference. First operand 1411 states and 2335 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:58:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:41,637 INFO L93 Difference]: Finished difference Result 4169 states and 7048 transitions. [2024-11-28 03:58:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:58:41,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-28 03:58:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:41,675 INFO L225 Difference]: With dead ends: 4169 [2024-11-28 03:58:41,675 INFO L226 Difference]: Without dead ends: 2776 [2024-11-28 03:58:41,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:58:41,722 INFO L435 NwaCegarLoop]: 988 mSDtfsCounter, 871 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:41,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 4546 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:58:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2024-11-28 03:58:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2729. [2024-11-28 03:58:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2119 states have (on average 1.6672958942897593) internal successors, (3533), 2219 states have internal predecessors, (3533), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (595), 475 states have call predecessors, (595), 485 states have call successors, (595) [2024-11-28 03:58:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4617 transitions. [2024-11-28 03:58:41,990 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4617 transitions. Word has length 74 [2024-11-28 03:58:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:41,991 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 4617 transitions. [2024-11-28 03:58:41,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:58:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4617 transitions. [2024-11-28 03:58:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:58:41,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:41,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:41,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:58:41,995 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1584509188, now seen corresponding path program 1 times [2024-11-28 03:58:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:41,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087206694] [2024-11-28 03:58:41,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:58:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087206694] [2024-11-28 03:58:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087206694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:58:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321491084] [2024-11-28 03:58:42,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:42,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:42,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:58:42,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:58:42,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:58:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:42,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:58:42,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:58:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:58:43,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:58:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321491084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:43,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:58:43,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-28 03:58:43,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409518240] [2024-11-28 03:58:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:43,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:58:43,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:43,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:58:43,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:58:43,108 INFO L87 Difference]: Start difference. First operand 2729 states and 4617 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:58:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:43,966 INFO L93 Difference]: Finished difference Result 7360 states and 12652 transitions. [2024-11-28 03:58:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:58:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-28 03:58:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:44,031 INFO L225 Difference]: With dead ends: 7360 [2024-11-28 03:58:44,031 INFO L226 Difference]: Without dead ends: 4649 [2024-11-28 03:58:44,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:58:44,061 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 739 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:44,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3472 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:58:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2024-11-28 03:58:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4606. [2024-11-28 03:58:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3574 states have (on average 1.6205931729155008) internal successors, (5792), 3740 states have internal predecessors, (5792), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1100), 795 states have call predecessors, (1100), 808 states have call successors, (1100) [2024-11-28 03:58:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 7706 transitions. [2024-11-28 03:58:44,484 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 7706 transitions. Word has length 75 [2024-11-28 03:58:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:44,485 INFO L471 AbstractCegarLoop]: Abstraction has 4606 states and 7706 transitions. [2024-11-28 03:58:44,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:58:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 7706 transitions. [2024-11-28 03:58:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:58:44,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:44,490 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:44,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:58:44,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:44,695 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1366844620, now seen corresponding path program 1 times [2024-11-28 03:58:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765718618] [2024-11-28 03:58:44,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:58:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765718618] [2024-11-28 03:58:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765718618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:44,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342664508] [2024-11-28 03:58:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:44,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:44,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:44,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:44,858 INFO L87 Difference]: Start difference. First operand 4606 states and 7706 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:58:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:45,376 INFO L93 Difference]: Finished difference Result 9218 states and 15577 transitions. [2024-11-28 03:58:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-11-28 03:58:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:45,447 INFO L225 Difference]: With dead ends: 9218 [2024-11-28 03:58:45,447 INFO L226 Difference]: Without dead ends: 4630 [2024-11-28 03:58:45,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:45,500 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 12 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:45,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2549 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2024-11-28 03:58:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4614. [2024-11-28 03:58:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 3580 states have (on average 1.6189944134078211) internal successors, (5796), 3746 states have internal predecessors, (5796), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1087), 793 states have call predecessors, (1087), 808 states have call successors, (1087) [2024-11-28 03:58:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7697 transitions. [2024-11-28 03:58:45,894 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7697 transitions. Word has length 75 [2024-11-28 03:58:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:45,895 INFO L471 AbstractCegarLoop]: Abstraction has 4614 states and 7697 transitions. [2024-11-28 03:58:45,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:58:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7697 transitions. [2024-11-28 03:58:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 03:58:45,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:45,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:45,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:58:45,899 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:45,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 309004933, now seen corresponding path program 1 times [2024-11-28 03:58:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096090546] [2024-11-28 03:58:45,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:58:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096090546] [2024-11-28 03:58:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096090546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:46,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:58:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494097346] [2024-11-28 03:58:46,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:46,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:58:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:46,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:58:46,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:58:46,193 INFO L87 Difference]: Start difference. First operand 4614 states and 7697 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:58:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:47,569 INFO L93 Difference]: Finished difference Result 13793 states and 23849 transitions. [2024-11-28 03:58:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:58:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2024-11-28 03:58:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:47,709 INFO L225 Difference]: With dead ends: 13793 [2024-11-28 03:58:47,710 INFO L226 Difference]: Without dead ends: 9197 [2024-11-28 03:58:47,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:58:47,740 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 867 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:47,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 4377 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:58:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9197 states. [2024-11-28 03:58:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9197 to 9128. [2024-11-28 03:58:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9128 states, 7090 states have (on average 1.616784203102962) internal successors, (11463), 7416 states have internal predecessors, (11463), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2611), 1569 states have call predecessors, (2611), 1590 states have call successors, (2611) [2024-11-28 03:58:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9128 states to 9128 states and 15674 transitions. [2024-11-28 03:58:48,510 INFO L78 Accepts]: Start accepts. Automaton has 9128 states and 15674 transitions. Word has length 83 [2024-11-28 03:58:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:48,510 INFO L471 AbstractCegarLoop]: Abstraction has 9128 states and 15674 transitions. [2024-11-28 03:58:48,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:58:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9128 states and 15674 transitions. [2024-11-28 03:58:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 03:58:48,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:48,513 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:48,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:58:48,514 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:48,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -215545180, now seen corresponding path program 1 times [2024-11-28 03:58:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:48,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116186056] [2024-11-28 03:58:48,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:58:48,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:48,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116186056] [2024-11-28 03:58:48,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116186056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:48,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:48,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474258450] [2024-11-28 03:58:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:48,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:48,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:48,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:48,652 INFO L87 Difference]: Start difference. First operand 9128 states and 15674 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (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) [2024-11-28 03:58:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:49,608 INFO L93 Difference]: Finished difference Result 18310 states and 31901 transitions. [2024-11-28 03:58:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:49,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (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 84 [2024-11-28 03:58:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:49,735 INFO L225 Difference]: With dead ends: 18310 [2024-11-28 03:58:49,736 INFO L226 Difference]: Without dead ends: 9200 [2024-11-28 03:58:49,819 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 [2024-11-28 03:58:49,821 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 12 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:49,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2543 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2024-11-28 03:58:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 9168. [2024-11-28 03:58:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9168 states, 7126 states have (on average 1.614229581813079) internal successors, (11503), 7444 states have internal predecessors, (11503), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2591), 1565 states have call predecessors, (2591), 1590 states have call successors, (2591) [2024-11-28 03:58:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9168 states to 9168 states and 15694 transitions. [2024-11-28 03:58:50,630 INFO L78 Accepts]: Start accepts. Automaton has 9168 states and 15694 transitions. Word has length 84 [2024-11-28 03:58:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:50,631 INFO L471 AbstractCegarLoop]: Abstraction has 9168 states and 15694 transitions. [2024-11-28 03:58:50,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (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) [2024-11-28 03:58:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9168 states and 15694 transitions. [2024-11-28 03:58:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 03:58:50,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:50,636 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:50,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:58:50,636 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:50,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 72892810, now seen corresponding path program 1 times [2024-11-28 03:58:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118167054] [2024-11-28 03:58:50,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:58:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118167054] [2024-11-28 03:58:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118167054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:50,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:58:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978115856] [2024-11-28 03:58:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:50,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:58:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:50,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:58:50,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:58:50,900 INFO L87 Difference]: Start difference. First operand 9168 states and 15694 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 03:58:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:52,596 INFO L93 Difference]: Finished difference Result 27527 states and 49686 transitions. [2024-11-28 03:58:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:58:52,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-11-28 03:58:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:52,829 INFO L225 Difference]: With dead ends: 27527 [2024-11-28 03:58:52,829 INFO L226 Difference]: Without dead ends: 18377 [2024-11-28 03:58:52,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:58:52,912 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 863 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:52,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 4390 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:58:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18377 states. [2024-11-28 03:58:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18377 to 18276. [2024-11-28 03:58:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 14212 states have (on average 1.611384745285674) internal successors, (22901), 14842 states have internal predecessors, (22901), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6613), 3123 states have call predecessors, (6613), 3160 states have call successors, (6613) [2024-11-28 03:58:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 32692 transitions. [2024-11-28 03:58:54,447 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 32692 transitions. Word has length 93 [2024-11-28 03:58:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:54,450 INFO L471 AbstractCegarLoop]: Abstraction has 18276 states and 32692 transitions. [2024-11-28 03:58:54,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 03:58:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 32692 transitions. [2024-11-28 03:58:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:58:54,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:54,455 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:54,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:58:54,455 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:54,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash 242212487, now seen corresponding path program 1 times [2024-11-28 03:58:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787189225] [2024-11-28 03:58:54,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:58:54,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:54,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787189225] [2024-11-28 03:58:54,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787189225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:54,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:54,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:58:54,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704302835] [2024-11-28 03:58:54,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:54,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:58:54,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:54,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:58:54,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:54,656 INFO L87 Difference]: Start difference. First operand 18276 states and 32692 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:58:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:56,389 INFO L93 Difference]: Finished difference Result 36678 states and 67179 transitions. [2024-11-28 03:58:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-11-28 03:58:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:56,584 INFO L225 Difference]: With dead ends: 36678 [2024-11-28 03:58:56,584 INFO L226 Difference]: Without dead ends: 18420 [2024-11-28 03:58:56,733 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 [2024-11-28 03:58:56,734 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 11 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:56,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2546 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18420 states. [2024-11-28 03:58:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18420 to 18356. [2024-11-28 03:58:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18356 states, 14284 states have (on average 1.6088630635676282) internal successors, (22981), 14914 states have internal predecessors, (22981), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6585), 3115 states have call predecessors, (6585), 3160 states have call successors, (6585) [2024-11-28 03:58:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18356 states to 18356 states and 32744 transitions. [2024-11-28 03:58:58,029 INFO L78 Accepts]: Start accepts. Automaton has 18356 states and 32744 transitions. Word has length 94 [2024-11-28 03:58:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:58,030 INFO L471 AbstractCegarLoop]: Abstraction has 18356 states and 32744 transitions. [2024-11-28 03:58:58,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:58:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 18356 states and 32744 transitions. [2024-11-28 03:58:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 03:58:58,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:58,035 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:58,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:58:58,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:58,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash -707990087, now seen corresponding path program 1 times [2024-11-28 03:58:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:58,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662976491] [2024-11-28 03:58:58,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:58:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662976491] [2024-11-28 03:58:58,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662976491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:58:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163737716] [2024-11-28 03:58:58,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:58:58,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:58:58,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:58:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:59,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:58:59,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:58:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:58:59,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:58:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163737716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:58:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-28 03:58:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470723414] [2024-11-28 03:58:59,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:58:59,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:59,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:58:59,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:58:59,477 INFO L87 Difference]: Start difference. First operand 18356 states and 32744 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 03:59:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:08,442 INFO L93 Difference]: Finished difference Result 65637 states and 124940 transitions. [2024-11-28 03:59:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:59:08,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2024-11-28 03:59:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:08,902 INFO L225 Difference]: With dead ends: 65637 [2024-11-28 03:59:08,902 INFO L226 Difference]: Without dead ends: 47299 [2024-11-28 03:59:09,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:59:09,080 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 2462 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 6520 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 7004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 6520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:09,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 2568 Invalid, 7004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [484 Valid, 6520 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-28 03:59:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47299 states. [2024-11-28 03:59:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47299 to 46638. [2024-11-28 03:59:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46638 states, 36332 states have (on average 1.6019762193108005) internal successors, (58203), 37858 states have internal predecessors, (58203), 7956 states have call successors, (7956), 2206 states have call predecessors, (7956), 2349 states have return successors, (20721), 7941 states have call predecessors, (20721), 7922 states have call successors, (20721) [2024-11-28 03:59:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46638 states to 46638 states and 86880 transitions. [2024-11-28 03:59:12,475 INFO L78 Accepts]: Start accepts. Automaton has 46638 states and 86880 transitions. Word has length 128 [2024-11-28 03:59:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:12,475 INFO L471 AbstractCegarLoop]: Abstraction has 46638 states and 86880 transitions. [2024-11-28 03:59:12,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 03:59:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 46638 states and 86880 transitions. [2024-11-28 03:59:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:59:12,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:12,478 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:12,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:59:12,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_912ee7c1-7386-4eba-842e-763235f52791/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:12,683 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:12,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -78150672, now seen corresponding path program 1 times [2024-11-28 03:59:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:12,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108172465] [2024-11-28 03:59:12,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:12,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:59:12,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:12,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108172465] [2024-11-28 03:59:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108172465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:12,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:12,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:59:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239215229] [2024-11-28 03:59:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:12,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:59:12,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:12,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:59:12,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:12,974 INFO L87 Difference]: Start difference. First operand 46638 states and 86880 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:59:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:18,284 INFO L93 Difference]: Finished difference Result 140343 states and 291104 transitions. [2024-11-28 03:59:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:59:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-11-28 03:59:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:19,559 INFO L225 Difference]: With dead ends: 140343 [2024-11-28 03:59:19,559 INFO L226 Difference]: Without dead ends: 93723 [2024-11-28 03:59:20,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:59:20,280 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 859 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:20,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 4362 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:59:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93723 states. [2024-11-28 03:59:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93723 to 93366. [2024-11-28 03:59:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93366 states, 72744 states have (on average 1.599183437809304) internal successors, (116331), 75782 states have internal predecessors, (116331), 15880 states have call successors, (15880), 4406 states have call predecessors, (15880), 4741 states have return successors, (58181), 15913 states have call predecessors, (58181), 15814 states have call successors, (58181) [2024-11-28 03:59:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93366 states to 93366 states and 190392 transitions. [2024-11-28 03:59:27,119 INFO L78 Accepts]: Start accepts. Automaton has 93366 states and 190392 transitions. Word has length 104 [2024-11-28 03:59:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:27,120 INFO L471 AbstractCegarLoop]: Abstraction has 93366 states and 190392 transitions. [2024-11-28 03:59:27,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:59:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 93366 states and 190392 transitions. [2024-11-28 03:59:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:59:27,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:27,122 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:27,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:59:27,122 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:27,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash -957869271, now seen corresponding path program 1 times [2024-11-28 03:59:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:27,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814764074] [2024-11-28 03:59:27,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 03:59:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814764074] [2024-11-28 03:59:27,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814764074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:27,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:59:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871210166] [2024-11-28 03:59:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:27,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:59:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:27,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:59:27,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:59:27,243 INFO L87 Difference]: Start difference. First operand 93366 states and 190392 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 03:59:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:33,062 INFO L93 Difference]: Finished difference Result 187610 states and 402988 transitions. [2024-11-28 03:59:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-28 03:59:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:34,045 INFO L225 Difference]: With dead ends: 187610 [2024-11-28 03:59:34,045 INFO L226 Difference]: Without dead ends: 94262