./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.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_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1 --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 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:22:25,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:22:25,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:22:25,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:22:25,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:22:25,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:22:25,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:22:25,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:22:25,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:22:25,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:22:25,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:22:25,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:22:25,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:22:25,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:22:25,221 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:22:25,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:22:25,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:22:25,223 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:22:25,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:22:25,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:22:25,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:22:25,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:22:25,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:22:25,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:22:25,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:22:25,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:22:25,225 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_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2024-12-02 14:22:25,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:22:25,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:22:25,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:22:25,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:22:25,457 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:22:25,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2024-12-02 14:22:28,227 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/data/231f82823/479423eb4b014b29ad6211776e776400/FLAG6730611e5 [2024-12-02 14:22:28,567 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:22:28,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2024-12-02 14:22:28,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/data/231f82823/479423eb4b014b29ad6211776e776400/FLAG6730611e5 [2024-12-02 14:22:28,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/data/231f82823/479423eb4b014b29ad6211776e776400 [2024-12-02 14:22:28,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:22:28,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:22:28,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:22:28,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:22:28,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:22:28,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:22:28" (1/1) ... [2024-12-02 14:22:28,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1defd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:28, skipping insertion in model container [2024-12-02 14:22:28,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:22:28" (1/1) ... [2024-12-02 14:22:28,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:22:29,005 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_892d219b-b67d-4d75-8508-fa7976b48d0c/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2024-12-02 14:22:29,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:22:29,286 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:22:29,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [57] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [730] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1096] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1282] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2778] [2024-12-02 14:22:29,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2897] [2024-12-02 14:22:29,295 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2989] [2024-12-02 14:22:29,295 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3027] [2024-12-02 14:22:29,295 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3043] [2024-12-02 14:22:29,298 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_892d219b-b67d-4d75-8508-fa7976b48d0c/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2024-12-02 14:22:29,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:22:29,407 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:22:29,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29 WrapperNode [2024-12-02 14:22:29,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:22:29,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:22:29,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:22:29,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:22:29,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,470 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 804 [2024-12-02 14:22:29,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:22:29,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:22:29,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:22:29,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:22:29,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,510 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 14:22:29,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:22:29,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:22:29,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:22:29,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:22:29,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (1/1) ... [2024-12-02 14:22:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:22:29,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:29,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:22:29,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:22:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-02 14:22:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:22:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 14:22:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:22:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:22:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:22:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:22:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:22:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:22:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:22:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:22:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:22:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:22:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:22:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:22:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:22:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:22:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:22:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:22:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:22:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:22:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:22:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:22:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-12-02 14:22:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-12-02 14:22:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:22:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:22:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:22:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:22:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:22:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:22:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:22:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:22:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:22:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:22:29,771 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:22:29,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:22:30,840 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-12-02 14:22:30,840 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:22:30,861 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:22:30,861 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:22:30,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:22:30 BoogieIcfgContainer [2024-12-02 14:22:30,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:22:30,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:22:30,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:22:30,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:22:30,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:22:28" (1/3) ... [2024-12-02 14:22:30,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce59aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:22:30, skipping insertion in model container [2024-12-02 14:22:30,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:29" (2/3) ... [2024-12-02 14:22:30,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce59aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:22:30, skipping insertion in model container [2024-12-02 14:22:30,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:22:30" (3/3) ... [2024-12-02 14:22:30,870 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2024-12-02 14:22:30,881 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:22:30,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product18.cil.c that has 24 procedures, 547 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:22:30,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:22:30,948 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;@743ae1d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:22:30,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:22:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 547 states, 428 states have (on average 1.7032710280373833) internal successors, (729), 451 states have internal predecessors, (729), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 14:22:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:22:30,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:30,965 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:30,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 897280685, now seen corresponding path program 1 times [2024-12-02 14:22:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536845477] [2024-12-02 14:22:30,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:31,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536845477] [2024-12-02 14:22:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536845477] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458801181] [2024-12-02 14:22:31,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:31,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:31,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:22:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:31,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:22:31,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:22:31,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:31,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458801181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:31,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:31,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-02 14:22:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298026771] [2024-12-02 14:22:31,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:31,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:22:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:31,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:22:31,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:22:31,937 INFO L87 Difference]: Start difference. First operand has 547 states, 428 states have (on average 1.7032710280373833) internal successors, (729), 451 states have internal predecessors, (729), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 14:22:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:32,001 INFO L93 Difference]: Finished difference Result 568 states and 947 transitions. [2024-12-02 14:22:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:22:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2024-12-02 14:22:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:32,015 INFO L225 Difference]: With dead ends: 568 [2024-12-02 14:22:32,015 INFO L226 Difference]: Without dead ends: 539 [2024-12-02 14:22:32,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:22:32,021 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:32,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-12-02 14:22:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-12-02 14:22:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.7014218009478672) internal successors, (718), 443 states have internal predecessors, (718), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2024-12-02 14:22:32,099 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 79 [2024-12-02 14:22:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:32,100 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2024-12-02 14:22:32,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 14:22:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2024-12-02 14:22:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 14:22:32,105 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:32,105 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:32,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:22:32,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:22:32,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:32,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -388009895, now seen corresponding path program 1 times [2024-12-02 14:22:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:32,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392612167] [2024-12-02 14:22:32,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:32,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392612167] [2024-12-02 14:22:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392612167] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707111787] [2024-12-02 14:22:32,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:32,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:32,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:32,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:22:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:33,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:33,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:33,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:33,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707111787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:33,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:33,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:33,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083997234] [2024-12-02 14:22:33,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:33,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:33,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:33,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:33,178 INFO L87 Difference]: Start difference. First operand 539 states and 901 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:33,284 INFO L93 Difference]: Finished difference Result 1069 states and 1794 transitions. [2024-12-02 14:22:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:33,285 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2024-12-02 14:22:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:33,291 INFO L225 Difference]: With dead ends: 1069 [2024-12-02 14:22:33,291 INFO L226 Difference]: Without dead ends: 539 [2024-12-02 14:22:33,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:33,297 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 5 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:33,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2661 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-12-02 14:22:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-12-02 14:22:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6990521327014219) internal successors, (717), 443 states have internal predecessors, (717), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 900 transitions. [2024-12-02 14:22:33,337 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 900 transitions. Word has length 80 [2024-12-02 14:22:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:33,338 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 900 transitions. [2024-12-02 14:22:33,338 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 900 transitions. [2024-12-02 14:22:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 14:22:33,341 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:33,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:33,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:33,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:33,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:33,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1837406513, now seen corresponding path program 1 times [2024-12-02 14:22:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535260999] [2024-12-02 14:22:33,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535260999] [2024-12-02 14:22:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535260999] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648885295] [2024-12-02 14:22:33,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:33,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:33,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:33,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:33,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:22:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:34,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:34,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:34,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:34,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648885295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:34,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:34,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:34,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110422884] [2024-12-02 14:22:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:34,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:34,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:34,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:34,143 INFO L87 Difference]: Start difference. First operand 539 states and 900 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:34,207 INFO L93 Difference]: Finished difference Result 1069 states and 1792 transitions. [2024-12-02 14:22:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2024-12-02 14:22:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:34,212 INFO L225 Difference]: With dead ends: 1069 [2024-12-02 14:22:34,212 INFO L226 Difference]: Without dead ends: 539 [2024-12-02 14:22:34,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:34,216 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 4 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:34,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2661 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-12-02 14:22:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-12-02 14:22:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6966824644549763) internal successors, (716), 443 states have internal predecessors, (716), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 899 transitions. [2024-12-02 14:22:34,244 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 899 transitions. Word has length 82 [2024-12-02 14:22:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:34,244 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 899 transitions. [2024-12-02 14:22:34,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 899 transitions. [2024-12-02 14:22:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 14:22:34,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:34,246 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:34,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:22:34,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:34,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:34,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1877382681, now seen corresponding path program 1 times [2024-12-02 14:22:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345605205] [2024-12-02 14:22:34,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:34,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345605205] [2024-12-02 14:22:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345605205] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120294564] [2024-12-02 14:22:34,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:34,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:34,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:34,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:22:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:34,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:34,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:34,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120294564] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:34,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496793880] [2024-12-02 14:22:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:34,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:34,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:34,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:34,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:34,937 INFO L87 Difference]: Start difference. First operand 539 states and 899 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:35,020 INFO L93 Difference]: Finished difference Result 1076 states and 1799 transitions. [2024-12-02 14:22:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:35,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-12-02 14:22:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:35,025 INFO L225 Difference]: With dead ends: 1076 [2024-12-02 14:22:35,026 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 14:22:35,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:35,029 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 13 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:35,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2658 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 14:22:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 14:22:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6930232558139535) internal successors, (728), 451 states have internal predecessors, (728), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 911 transitions. [2024-12-02 14:22:35,055 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 911 transitions. Word has length 84 [2024-12-02 14:22:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:35,055 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 911 transitions. [2024-12-02 14:22:35,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 911 transitions. [2024-12-02 14:22:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 14:22:35,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:35,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:35,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:35,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-12-02 14:22:35,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:35,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash 643446086, now seen corresponding path program 1 times [2024-12-02 14:22:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:35,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19853325] [2024-12-02 14:22:35,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19853325] [2024-12-02 14:22:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19853325] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276124656] [2024-12-02 14:22:35,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:35,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:35,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:35,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:35,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:22:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:35,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:35,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:35,767 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276124656] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224976200] [2024-12-02 14:22:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:35,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:35,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:35,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:35,769 INFO L87 Difference]: Start difference. First operand 548 states and 911 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:35,839 INFO L93 Difference]: Finished difference Result 1078 states and 1800 transitions. [2024-12-02 14:22:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2024-12-02 14:22:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:35,844 INFO L225 Difference]: With dead ends: 1078 [2024-12-02 14:22:35,844 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 14:22:35,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:35,847 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 11 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:35,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2658 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 14:22:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 14:22:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6906976744186046) internal successors, (727), 451 states have internal predecessors, (727), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 910 transitions. [2024-12-02 14:22:35,871 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 910 transitions. Word has length 85 [2024-12-02 14:22:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:35,871 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 910 transitions. [2024-12-02 14:22:35,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 910 transitions. [2024-12-02 14:22:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 14:22:35,873 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:35,874 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:35,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:36,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:36,074 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:36,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 568065589, now seen corresponding path program 1 times [2024-12-02 14:22:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855375115] [2024-12-02 14:22:36,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855375115] [2024-12-02 14:22:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855375115] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420792457] [2024-12-02 14:22:36,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:36,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:36,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:36,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:36,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:22:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:36,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:36,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:36,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:36,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420792457] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:36,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:36,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706908118] [2024-12-02 14:22:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:36,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:36,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:36,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:36,524 INFO L87 Difference]: Start difference. First operand 548 states and 910 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:36,590 INFO L93 Difference]: Finished difference Result 1078 states and 1799 transitions. [2024-12-02 14:22:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:36,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2024-12-02 14:22:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:36,595 INFO L225 Difference]: With dead ends: 1078 [2024-12-02 14:22:36,595 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 14:22:36,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:36,598 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 10 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:36,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2658 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 14:22:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 14:22:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6883720930232557) internal successors, (726), 451 states have internal predecessors, (726), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 14:22:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 909 transitions. [2024-12-02 14:22:36,620 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 909 transitions. Word has length 86 [2024-12-02 14:22:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:36,620 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 909 transitions. [2024-12-02 14:22:36,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 909 transitions. [2024-12-02 14:22:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:22:36,622 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:36,622 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:36,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:22:36,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 14:22:36,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2048185762, now seen corresponding path program 1 times [2024-12-02 14:22:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141465018] [2024-12-02 14:22:36,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:37,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141465018] [2024-12-02 14:22:37,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141465018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252710065] [2024-12-02 14:22:37,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:37,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:37,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:37,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:37,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:22:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:37,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:22:37,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:37,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252710065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:37,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:37,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 14:22:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168565148] [2024-12-02 14:22:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:37,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:22:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:37,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:22:37,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:22:37,534 INFO L87 Difference]: Start difference. First operand 548 states and 909 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:37,677 INFO L93 Difference]: Finished difference Result 1097 states and 1829 transitions. [2024-12-02 14:22:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:22:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2024-12-02 14:22:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:37,681 INFO L225 Difference]: With dead ends: 1097 [2024-12-02 14:22:37,681 INFO L226 Difference]: Without dead ends: 571 [2024-12-02 14:22:37,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:22:37,683 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 100 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5248 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:37,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5248 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-12-02 14:22:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 567. [2024-12-02 14:22:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 469 states have internal predecessors, (752), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-12-02 14:22:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 940 transitions. [2024-12-02 14:22:37,705 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 940 transitions. Word has length 87 [2024-12-02 14:22:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:37,706 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 940 transitions. [2024-12-02 14:22:37,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 940 transitions. [2024-12-02 14:22:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:22:37,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:37,708 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:37,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:22:37,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:37,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:37,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1292552639, now seen corresponding path program 1 times [2024-12-02 14:22:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:37,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742151831] [2024-12-02 14:22:37,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:37,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742151831] [2024-12-02 14:22:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742151831] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761770992] [2024-12-02 14:22:37,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:37,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:37,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:22:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:38,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:38,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:38,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761770992] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:38,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343603305] [2024-12-02 14:22:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:38,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:38,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:38,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:38,370 INFO L87 Difference]: Start difference. First operand 567 states and 940 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:38,509 INFO L93 Difference]: Finished difference Result 1153 states and 1930 transitions. [2024-12-02 14:22:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:38,510 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2024-12-02 14:22:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:38,512 INFO L225 Difference]: With dead ends: 1153 [2024-12-02 14:22:38,513 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 14:22:38,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:38,515 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 76 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:38,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2549 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 14:22:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2024-12-02 14:22:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.6748878923766817) internal successors, (747), 469 states have internal predecessors, (747), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-12-02 14:22:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 935 transitions. [2024-12-02 14:22:38,534 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 935 transitions. Word has length 87 [2024-12-02 14:22:38,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:38,534 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 935 transitions. [2024-12-02 14:22:38,534 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 935 transitions. [2024-12-02 14:22:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 14:22:38,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:38,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:38,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:22:38,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:38,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:38,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1651639801, now seen corresponding path program 1 times [2024-12-02 14:22:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629831104] [2024-12-02 14:22:38,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:22:38,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629831104] [2024-12-02 14:22:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629831104] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891131429] [2024-12-02 14:22:38,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:38,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:38,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:38,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:22:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:39,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:39,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:39,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891131429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:39,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:39,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635776249] [2024-12-02 14:22:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:39,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:39,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:39,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:39,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:39,187 INFO L87 Difference]: Start difference. First operand 567 states and 935 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:39,306 INFO L93 Difference]: Finished difference Result 1153 states and 1920 transitions. [2024-12-02 14:22:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2024-12-02 14:22:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:39,310 INFO L225 Difference]: With dead ends: 1153 [2024-12-02 14:22:39,310 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 14:22:39,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:39,313 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 75 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:39,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2549 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 14:22:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2024-12-02 14:22:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.663677130044843) internal successors, (742), 469 states have internal predecessors, (742), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-12-02 14:22:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 930 transitions. [2024-12-02 14:22:39,329 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 930 transitions. Word has length 89 [2024-12-02 14:22:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:39,330 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 930 transitions. [2024-12-02 14:22:39,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 930 transitions. [2024-12-02 14:22:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 14:22:39,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:39,331 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:39,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:39,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:39,532 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1076982495, now seen corresponding path program 1 times [2024-12-02 14:22:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966308181] [2024-12-02 14:22:39,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:22:39,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:39,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966308181] [2024-12-02 14:22:39,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966308181] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:39,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707143527] [2024-12-02 14:22:39,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:39,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:39,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:22:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:39,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:39,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:39,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707143527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:39,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:39,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188708569] [2024-12-02 14:22:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:39,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:39,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:39,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:39,979 INFO L87 Difference]: Start difference. First operand 567 states and 930 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:40,145 INFO L93 Difference]: Finished difference Result 1204 states and 1992 transitions. [2024-12-02 14:22:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-12-02 14:22:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:40,150 INFO L225 Difference]: With dead ends: 1204 [2024-12-02 14:22:40,151 INFO L226 Difference]: Without dead ends: 663 [2024-12-02 14:22:40,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:40,154 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 130 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:40,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2580 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-12-02 14:22:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 618. [2024-12-02 14:22:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.6673387096774193) internal successors, (827), 519 states have internal predecessors, (827), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-12-02 14:22:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1014 transitions. [2024-12-02 14:22:40,178 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1014 transitions. Word has length 91 [2024-12-02 14:22:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:40,178 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1014 transitions. [2024-12-02 14:22:40,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1014 transitions. [2024-12-02 14:22:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:22:40,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:40,180 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:22:40,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:40,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 14:22:40,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:40,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -454166065, now seen corresponding path program 1 times [2024-12-02 14:22:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385573295] [2024-12-02 14:22:40,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:40,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385573295] [2024-12-02 14:22:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385573295] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732437496] [2024-12-02 14:22:40,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:40,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:40,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:40,543 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:40,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:22:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:40,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:22:40,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:40,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732437496] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 14:22:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478458282] [2024-12-02 14:22:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:40,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:22:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:40,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:22:40,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:22:40,882 INFO L87 Difference]: Start difference. First operand 618 states and 1014 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:41,021 INFO L93 Difference]: Finished difference Result 1166 states and 1921 transitions. [2024-12-02 14:22:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:22:41,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2024-12-02 14:22:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:41,026 INFO L225 Difference]: With dead ends: 1166 [2024-12-02 14:22:41,026 INFO L226 Difference]: Without dead ends: 640 [2024-12-02 14:22:41,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:22:41,028 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 113 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:41,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5994 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-12-02 14:22:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 618. [2024-12-02 14:22:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.6673387096774193) internal successors, (827), 519 states have internal predecessors, (827), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-12-02 14:22:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1014 transitions. [2024-12-02 14:22:41,052 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1014 transitions. Word has length 92 [2024-12-02 14:22:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:41,052 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1014 transitions. [2024-12-02 14:22:41,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1014 transitions. [2024-12-02 14:22:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:22:41,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:41,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:41,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 14:22:41,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 14:22:41,255 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:41,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -948168529, now seen corresponding path program 1 times [2024-12-02 14:22:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636539659] [2024-12-02 14:22:41,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:22:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636539659] [2024-12-02 14:22:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636539659] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631634668] [2024-12-02 14:22:41,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:41,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:41,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:41,330 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:41,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:22:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:41,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:41,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:22:41,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631634668] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:41,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919606239] [2024-12-02 14:22:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:41,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:41,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:41,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:41,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:41,614 INFO L87 Difference]: Start difference. First operand 618 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:41,776 INFO L93 Difference]: Finished difference Result 1207 states and 1993 transitions. [2024-12-02 14:22:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-12-02 14:22:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:41,780 INFO L225 Difference]: With dead ends: 1207 [2024-12-02 14:22:41,780 INFO L226 Difference]: Without dead ends: 651 [2024-12-02 14:22:41,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:41,783 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 124 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:41,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2553 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-12-02 14:22:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 618. [2024-12-02 14:22:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.657258064516129) internal successors, (822), 519 states have internal predecessors, (822), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-12-02 14:22:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1009 transitions. [2024-12-02 14:22:41,802 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1009 transitions. Word has length 92 [2024-12-02 14:22:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:41,802 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1009 transitions. [2024-12-02 14:22:41,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1009 transitions. [2024-12-02 14:22:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:22:41,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:41,804 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:22:41,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:22:42,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 14:22:42,005 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:42,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash 412886160, now seen corresponding path program 1 times [2024-12-02 14:22:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187916860] [2024-12-02 14:22:42,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187916860] [2024-12-02 14:22:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187916860] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815800873] [2024-12-02 14:22:42,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:42,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:42,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:22:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:42,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:22:42,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:42,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815800873] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 14:22:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215148618] [2024-12-02 14:22:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:42,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:22:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:42,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:22:42,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:22:42,458 INFO L87 Difference]: Start difference. First operand 618 states and 1009 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:42,538 INFO L93 Difference]: Finished difference Result 1101 states and 1813 transitions. [2024-12-02 14:22:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:22:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2024-12-02 14:22:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:42,544 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 14:22:42,544 INFO L226 Difference]: Without dead ends: 642 [2024-12-02 14:22:42,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:22:42,557 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 86 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:42,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5213 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-12-02 14:22:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 637. [2024-12-02 14:22:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-12-02 14:22:42,581 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 92 [2024-12-02 14:22:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:42,582 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-12-02 14:22:42,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-12-02 14:22:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:22:42,584 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:42,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:42,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 14:22:42,785 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:42,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 625216493, now seen corresponding path program 1 times [2024-12-02 14:22:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114742203] [2024-12-02 14:22:42,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:22:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114742203] [2024-12-02 14:22:42,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114742203] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858298669] [2024-12-02 14:22:42,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:42,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:42,901 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:42,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 14:22:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:43,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:22:43,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:43,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:43,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858298669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:43,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:43,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 14:22:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269449856] [2024-12-02 14:22:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:43,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:22:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:43,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:22:43,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:22:43,248 INFO L87 Difference]: Start difference. First operand 637 states and 1039 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:43,324 INFO L93 Difference]: Finished difference Result 1131 states and 1864 transitions. [2024-12-02 14:22:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:22:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-12-02 14:22:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:43,328 INFO L225 Difference]: With dead ends: 1131 [2024-12-02 14:22:43,328 INFO L226 Difference]: Without dead ends: 672 [2024-12-02 14:22:43,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:22:43,330 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 95 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5203 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:43,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5203 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:43,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-12-02 14:22:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 637. [2024-12-02 14:22:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-12-02 14:22:43,353 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 93 [2024-12-02 14:22:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:43,353 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-12-02 14:22:43,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-12-02 14:22:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:22:43,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:43,355 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:43,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 14:22:43,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:43,556 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:43,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1248395117, now seen corresponding path program 1 times [2024-12-02 14:22:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:43,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961771416] [2024-12-02 14:22:43,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:43,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:22:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961771416] [2024-12-02 14:22:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961771416] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924026822] [2024-12-02 14:22:43,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:43,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:43,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:43,638 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:43,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 14:22:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:43,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:22:43,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:43,965 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924026822] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:43,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 14:22:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551913695] [2024-12-02 14:22:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:43,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:22:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:43,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:22:43,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:22:43,966 INFO L87 Difference]: Start difference. First operand 637 states and 1039 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:44,082 INFO L93 Difference]: Finished difference Result 1116 states and 1838 transitions. [2024-12-02 14:22:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:22:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-12-02 14:22:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:44,086 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 14:22:44,086 INFO L226 Difference]: Without dead ends: 657 [2024-12-02 14:22:44,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:22:44,088 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 113 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:44,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6002 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-12-02 14:22:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 637. [2024-12-02 14:22:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-12-02 14:22:44,106 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 93 [2024-12-02 14:22:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:44,106 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-12-02 14:22:44,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-12-02 14:22:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:22:44,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:44,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:44,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 14:22:44,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 14:22:44,309 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:44,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1281724933, now seen corresponding path program 1 times [2024-12-02 14:22:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109051822] [2024-12-02 14:22:44,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:44,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109051822] [2024-12-02 14:22:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109051822] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493935104] [2024-12-02 14:22:44,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:44,392 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:44,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 14:22:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:44,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:22:44,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:22:44,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:44,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493935104] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:44,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:44,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761291831] [2024-12-02 14:22:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:44,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:44,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:44,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:44,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:44,650 INFO L87 Difference]: Start difference. First operand 637 states and 1039 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:44,691 INFO L93 Difference]: Finished difference Result 1168 states and 1923 transitions. [2024-12-02 14:22:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:22:44,691 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2024-12-02 14:22:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:44,694 INFO L225 Difference]: With dead ends: 1168 [2024-12-02 14:22:44,694 INFO L226 Difference]: Without dead ends: 637 [2024-12-02 14:22:44,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:44,696 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 13 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:44,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2627 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-12-02 14:22:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2024-12-02 14:22:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.6484375) internal successors, (844), 537 states have internal predecessors, (844), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1035 transitions. [2024-12-02 14:22:44,708 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1035 transitions. Word has length 93 [2024-12-02 14:22:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:44,709 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1035 transitions. [2024-12-02 14:22:44,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1035 transitions. [2024-12-02 14:22:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 14:22:44,710 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:44,710 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:44,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 14:22:44,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 14:22:44,911 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:44,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash 76632600, now seen corresponding path program 1 times [2024-12-02 14:22:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:44,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599413014] [2024-12-02 14:22:44,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:22:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599413014] [2024-12-02 14:22:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599413014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779124423] [2024-12-02 14:22:44,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:44,967 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:44,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 14:22:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:45,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:22:45,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:22:45,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779124423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:45,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669874968] [2024-12-02 14:22:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:45,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:45,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:45,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:45,288 INFO L87 Difference]: Start difference. First operand 637 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:45,336 INFO L93 Difference]: Finished difference Result 1212 states and 1991 transitions. [2024-12-02 14:22:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-12-02 14:22:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:45,340 INFO L225 Difference]: With dead ends: 1212 [2024-12-02 14:22:45,341 INFO L226 Difference]: Without dead ends: 661 [2024-12-02 14:22:45,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:45,343 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 7 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:45,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2600 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:45,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-12-02 14:22:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-12-02 14:22:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 536 states have (on average 1.626865671641791) internal successors, (872), 561 states have internal predecessors, (872), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1063 transitions. [2024-12-02 14:22:45,364 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1063 transitions. Word has length 94 [2024-12-02 14:22:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:45,365 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1063 transitions. [2024-12-02 14:22:45,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1063 transitions. [2024-12-02 14:22:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 14:22:45,367 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:45,367 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:45,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 14:22:45,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 14:22:45,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:45,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1085781207, now seen corresponding path program 1 times [2024-12-02 14:22:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628658228] [2024-12-02 14:22:45,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:22:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628658228] [2024-12-02 14:22:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628658228] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410774009] [2024-12-02 14:22:45,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:45,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:45,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 14:22:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:45,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:22:45,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:46,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410774009] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 14:22:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725739988] [2024-12-02 14:22:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:46,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:22:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:46,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:22:46,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:22:46,015 INFO L87 Difference]: Start difference. First operand 661 states and 1063 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:46,143 INFO L93 Difference]: Finished difference Result 1146 states and 1870 transitions. [2024-12-02 14:22:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:22:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2024-12-02 14:22:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:46,149 INFO L225 Difference]: With dead ends: 1146 [2024-12-02 14:22:46,149 INFO L226 Difference]: Without dead ends: 687 [2024-12-02 14:22:46,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:22:46,151 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 119 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:46,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5958 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:22:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-12-02 14:22:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 661. [2024-12-02 14:22:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 536 states have (on average 1.626865671641791) internal successors, (872), 561 states have internal predecessors, (872), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-12-02 14:22:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1063 transitions. [2024-12-02 14:22:46,172 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1063 transitions. Word has length 95 [2024-12-02 14:22:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:46,173 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1063 transitions. [2024-12-02 14:22:46,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:22:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1063 transitions. [2024-12-02 14:22:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 14:22:46,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:46,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:46,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 14:22:46,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 14:22:46,375 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:46,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:46,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1150633494, now seen corresponding path program 1 times [2024-12-02 14:22:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524785619] [2024-12-02 14:22:46,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:46,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:46,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524785619] [2024-12-02 14:22:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524785619] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:46,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346491607] [2024-12-02 14:22:46,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:46,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:46,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:46,463 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:46,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 14:22:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:46,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:22:46,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:22:47,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346491607] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:47,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2024-12-02 14:22:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486081389] [2024-12-02 14:22:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:47,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:22:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:47,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:22:47,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:22:47,013 INFO L87 Difference]: Start difference. First operand 661 states and 1063 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:48,777 INFO L93 Difference]: Finished difference Result 1712 states and 2840 transitions. [2024-12-02 14:22:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:22:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2024-12-02 14:22:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:48,782 INFO L225 Difference]: With dead ends: 1712 [2024-12-02 14:22:48,782 INFO L226 Difference]: Without dead ends: 1258 [2024-12-02 14:22:48,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:22:48,784 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 2109 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:48,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 1075 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:22:48,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-12-02 14:22:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1142. [2024-12-02 14:22:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 918 states have (on average 1.6568627450980393) internal successors, (1521), 952 states have internal predecessors, (1521), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-12-02 14:22:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1885 transitions. [2024-12-02 14:22:48,826 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1885 transitions. Word has length 95 [2024-12-02 14:22:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:48,827 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1885 transitions. [2024-12-02 14:22:48,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:22:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1885 transitions. [2024-12-02 14:22:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 14:22:48,830 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:48,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:48,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 14:22:49,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:49,031 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:49,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1250884309, now seen corresponding path program 1 times [2024-12-02 14:22:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381302174] [2024-12-02 14:22:49,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381302174] [2024-12-02 14:22:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381302174] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555575128] [2024-12-02 14:22:49,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:49,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:49,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:49,102 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:49,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 14:22:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:49,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:22:49,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:22:49,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:49,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555575128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:49,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:49,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 14:22:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540508111] [2024-12-02 14:22:49,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:49,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:22:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:49,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:22:49,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:22:49,524 INFO L87 Difference]: Start difference. First operand 1142 states and 1885 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 14:22:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:51,792 INFO L93 Difference]: Finished difference Result 2949 states and 4938 transitions. [2024-12-02 14:22:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:22:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2024-12-02 14:22:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:51,806 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 14:22:51,807 INFO L226 Difference]: Without dead ends: 2012 [2024-12-02 14:22:51,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:22:51,812 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 1704 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 4599 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 4599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:51,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2030 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 4599 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 14:22:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2024-12-02 14:22:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1843. [2024-12-02 14:22:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1467 states have (on average 1.6482617586912065) internal successors, (2418), 1511 states have internal predecessors, (2418), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2024-12-02 14:22:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 3056 transitions. [2024-12-02 14:22:51,927 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 3056 transitions. Word has length 123 [2024-12-02 14:22:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:51,928 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 3056 transitions. [2024-12-02 14:22:51,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 14:22:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 3056 transitions. [2024-12-02 14:22:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:22:51,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:51,931 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:51,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 14:22:52,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:52,132 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:52,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -104469948, now seen corresponding path program 1 times [2024-12-02 14:22:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:52,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702010813] [2024-12-02 14:22:52,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:52,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702010813] [2024-12-02 14:22:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702010813] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229402242] [2024-12-02 14:22:52,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:52,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:52,214 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:52,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 14:22:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:52,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:22:52,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:22:52,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229402242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:22:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671742596] [2024-12-02 14:22:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:52,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:52,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:52,533 INFO L87 Difference]: Start difference. First operand 1843 states and 3056 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:22:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:52,575 INFO L93 Difference]: Finished difference Result 3486 states and 5841 transitions. [2024-12-02 14:22:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-12-02 14:22:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:52,584 INFO L225 Difference]: With dead ends: 3486 [2024-12-02 14:22:52,584 INFO L226 Difference]: Without dead ends: 1851 [2024-12-02 14:22:52,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:22:52,589 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 0 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:52,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2649 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2024-12-02 14:22:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1847. [2024-12-02 14:22:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1471 states have (on average 1.64649898028552) internal successors, (2422), 1515 states have internal predecessors, (2422), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2024-12-02 14:22:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 3060 transitions. [2024-12-02 14:22:52,666 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 3060 transitions. Word has length 124 [2024-12-02 14:22:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:52,666 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 3060 transitions. [2024-12-02 14:22:52,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:22:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 3060 transitions. [2024-12-02 14:22:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:22:52,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:52,668 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:52,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-12-02 14:22:52,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:52,869 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:52,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash -200498217, now seen corresponding path program 1 times [2024-12-02 14:22:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96065146] [2024-12-02 14:22:52,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:52,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96065146] [2024-12-02 14:22:52,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96065146] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328705503] [2024-12-02 14:22:52,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:52,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:52,958 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:52,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 14:22:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:53,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 14:22:53,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:22:53,474 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:53,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328705503] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:53,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:53,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2024-12-02 14:22:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391561249] [2024-12-02 14:22:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:53,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:22:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:53,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:22:53,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:22:53,475 INFO L87 Difference]: Start difference. First operand 1847 states and 3060 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 14:22:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:56,384 INFO L93 Difference]: Finished difference Result 5664 states and 9661 transitions. [2024-12-02 14:22:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:22:56,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 127 [2024-12-02 14:22:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:56,404 INFO L225 Difference]: With dead ends: 5664 [2024-12-02 14:22:56,404 INFO L226 Difference]: Without dead ends: 4024 [2024-12-02 14:22:56,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:22:56,414 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 3525 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 5263 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3650 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 6083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 5263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:56,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3650 Valid, 4053 Invalid, 6083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 5263 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 14:22:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2024-12-02 14:22:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3989. [2024-12-02 14:22:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3138 states have (on average 1.6427660930529) internal successors, (5155), 3229 states have internal predecessors, (5155), 686 states have call successors, (686), 112 states have call predecessors, (686), 164 states have return successors, (890), 674 states have call predecessors, (890), 681 states have call successors, (890) [2024-12-02 14:22:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 6731 transitions. [2024-12-02 14:22:56,635 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 6731 transitions. Word has length 127 [2024-12-02 14:22:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:56,636 INFO L471 AbstractCegarLoop]: Abstraction has 3989 states and 6731 transitions. [2024-12-02 14:22:56,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 14:22:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 6731 transitions. [2024-12-02 14:22:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 14:22:56,641 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:56,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:56,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 14:22:56,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:56,842 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:56,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash -503054362, now seen corresponding path program 1 times [2024-12-02 14:22:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792479104] [2024-12-02 14:22:56,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:56,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:22:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792479104] [2024-12-02 14:22:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792479104] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656565830] [2024-12-02 14:22:56,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:56,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:56,942 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:56,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 14:22:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:57,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:22:57,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:22:57,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656565830] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-02 14:22:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809588739] [2024-12-02 14:22:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:57,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:22:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:57,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:22:57,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:22:57,303 INFO L87 Difference]: Start difference. First operand 3989 states and 6731 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:22:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:57,842 INFO L93 Difference]: Finished difference Result 11135 states and 19283 transitions. [2024-12-02 14:22:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:22:57,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-12-02 14:22:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:57,887 INFO L225 Difference]: With dead ends: 11135 [2024-12-02 14:22:57,887 INFO L226 Difference]: Without dead ends: 7468 [2024-12-02 14:22:57,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:22:57,904 INFO L435 NwaCegarLoop]: 1356 mSDtfsCounter, 727 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4773 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:57,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 4773 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:22:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7468 states. [2024-12-02 14:22:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7468 to 7443. [2024-12-02 14:22:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 5820 states have (on average 1.6328178694158075) internal successors, (9503), 5992 states have internal predecessors, (9503), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2024-12-02 14:22:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 12708 transitions. [2024-12-02 14:22:58,370 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 12708 transitions. Word has length 128 [2024-12-02 14:22:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:58,371 INFO L471 AbstractCegarLoop]: Abstraction has 7443 states and 12708 transitions. [2024-12-02 14:22:58,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:22:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 12708 transitions. [2024-12-02 14:22:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 14:22:58,384 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:58,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:58,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 14:22:58,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 14:22:58,585 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:58,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash 511974667, now seen corresponding path program 1 times [2024-12-02 14:22:58,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994260088] [2024-12-02 14:22:58,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:22:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994260088] [2024-12-02 14:22:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994260088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:22:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314542392] [2024-12-02 14:22:58,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:58,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:22:58,739 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:22:58,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 14:22:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:59,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:22:59,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:22:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:22:59,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:22:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314542392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:59,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:22:59,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 14:22:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638284735] [2024-12-02 14:22:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:59,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:22:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:59,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:22:59,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:22:59,082 INFO L87 Difference]: Start difference. First operand 7443 states and 12708 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:22:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:59,305 INFO L93 Difference]: Finished difference Result 14724 states and 25197 transitions. [2024-12-02 14:22:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:22:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2024-12-02 14:22:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:59,340 INFO L225 Difference]: With dead ends: 14724 [2024-12-02 14:22:59,340 INFO L226 Difference]: Without dead ends: 7479 [2024-12-02 14:22:59,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:22:59,364 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 5 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:59,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2599 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2024-12-02 14:22:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 7461. [2024-12-02 14:22:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 5838 states have (on average 1.632922233641658) internal successors, (9533), 6010 states have internal predecessors, (9533), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2024-12-02 14:22:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 12738 transitions. [2024-12-02 14:22:59,655 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 12738 transitions. Word has length 130 [2024-12-02 14:22:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:59,655 INFO L471 AbstractCegarLoop]: Abstraction has 7461 states and 12738 transitions. [2024-12-02 14:22:59,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:22:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 12738 transitions. [2024-12-02 14:22:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 14:22:59,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:59,663 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:59,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 14:22:59,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:22:59,864 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:59,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -405631015, now seen corresponding path program 1 times [2024-12-02 14:22:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949002398] [2024-12-02 14:22:59,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:23:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:00,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949002398] [2024-12-02 14:23:00,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949002398] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:00,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617597148] [2024-12-02 14:23:00,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:00,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:00,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:00,077 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:00,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 14:23:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:00,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 14:23:00,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:23:00,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617597148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:00,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 14:23:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274000757] [2024-12-02 14:23:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:00,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:23:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:00,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:23:00,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:23:00,491 INFO L87 Difference]: Start difference. First operand 7461 states and 12738 transitions. Second operand has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:23:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:00,835 INFO L93 Difference]: Finished difference Result 14666 states and 25092 transitions. [2024-12-02 14:23:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:23:00,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2024-12-02 14:23:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:00,869 INFO L225 Difference]: With dead ends: 14666 [2024-12-02 14:23:00,869 INFO L226 Difference]: Without dead ends: 7531 [2024-12-02 14:23:00,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:23:00,894 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 89 mSDsluCounter, 5114 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5979 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:00,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5979 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:23:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7531 states. [2024-12-02 14:23:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7531 to 7464. [2024-12-02 14:23:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 5840 states have (on average 1.6325342465753425) internal successors, (9534), 6013 states have internal predecessors, (9534), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2024-12-02 14:23:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 12740 transitions. [2024-12-02 14:23:01,263 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 12740 transitions. Word has length 131 [2024-12-02 14:23:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:01,263 INFO L471 AbstractCegarLoop]: Abstraction has 7464 states and 12740 transitions. [2024-12-02 14:23:01,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:23:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 12740 transitions. [2024-12-02 14:23:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 14:23:01,274 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:01,274 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:01,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 14:23:01,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:01,474 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:01,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash 355986523, now seen corresponding path program 1 times [2024-12-02 14:23:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893091590] [2024-12-02 14:23:01,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:23:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893091590] [2024-12-02 14:23:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893091590] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264111987] [2024-12-02 14:23:01,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:01,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:01,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:01,628 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:01,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 14:23:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:01,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:23:01,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:23:02,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264111987] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:02,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:02,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-12-02 14:23:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286611009] [2024-12-02 14:23:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:02,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:23:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:02,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:23:02,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:23:02,073 INFO L87 Difference]: Start difference. First operand 7464 states and 12740 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 14:23:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:02,658 INFO L93 Difference]: Finished difference Result 7989 states and 13747 transitions. [2024-12-02 14:23:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 131 [2024-12-02 14:23:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:02,698 INFO L225 Difference]: With dead ends: 7989 [2024-12-02 14:23:02,698 INFO L226 Difference]: Without dead ends: 7972 [2024-12-02 14:23:02,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:23:02,705 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 816 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:02,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1608 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:23:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2024-12-02 14:23:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 7496. [2024-12-02 14:23:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5872 states have (on average 1.6290871934604905) internal successors, (9566), 6045 states have internal predecessors, (9566), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2024-12-02 14:23:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 12772 transitions. [2024-12-02 14:23:03,019 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 12772 transitions. Word has length 131 [2024-12-02 14:23:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:03,020 INFO L471 AbstractCegarLoop]: Abstraction has 7496 states and 12772 transitions. [2024-12-02 14:23:03,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 14:23:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 12772 transitions. [2024-12-02 14:23:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 14:23:03,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:03,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:03,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 14:23:03,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:23:03,229 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:03,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash -443496714, now seen corresponding path program 1 times [2024-12-02 14:23:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104212643] [2024-12-02 14:23:03,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:23:03,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:03,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104212643] [2024-12-02 14:23:03,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104212643] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:03,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955518201] [2024-12-02 14:23:03,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:03,338 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:03,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 14:23:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:03,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:23:03,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:23:03,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955518201] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:03,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:03,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-12-02 14:23:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875125860] [2024-12-02 14:23:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:03,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:23:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:03,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:23:03,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:23:03,759 INFO L87 Difference]: Start difference. First operand 7496 states and 12772 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:23:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:04,357 INFO L93 Difference]: Finished difference Result 8170 states and 13904 transitions. [2024-12-02 14:23:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:23:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2024-12-02 14:23:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:04,399 INFO L225 Difference]: With dead ends: 8170 [2024-12-02 14:23:04,399 INFO L226 Difference]: Without dead ends: 8153 [2024-12-02 14:23:04,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:23:04,406 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 834 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:04,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 3485 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:23:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2024-12-02 14:23:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8100. [2024-12-02 14:23:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 6344 states have (on average 1.6169609079445144) internal successors, (10258), 6517 states have internal predecessors, (10258), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2024-12-02 14:23:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 13780 transitions. [2024-12-02 14:23:04,816 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 13780 transitions. Word has length 137 [2024-12-02 14:23:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:04,817 INFO L471 AbstractCegarLoop]: Abstraction has 8100 states and 13780 transitions. [2024-12-02 14:23:04,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:23:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 13780 transitions. [2024-12-02 14:23:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:23:04,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:04,831 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:04,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 14:23:05,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 14:23:05,031 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:05,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1546005608, now seen corresponding path program 1 times [2024-12-02 14:23:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:05,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628365706] [2024-12-02 14:23:05,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:05,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:23:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628365706] [2024-12-02 14:23:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628365706] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640701915] [2024-12-02 14:23:05,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:05,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:05,302 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:05,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 14:23:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:05,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 14:23:05,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:23:05,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640701915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:05,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-02 14:23:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615567418] [2024-12-02 14:23:05,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:05,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:23:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:05,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:23:05,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:23:05,695 INFO L87 Difference]: Start difference. First operand 8100 states and 13780 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:23:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:06,017 INFO L93 Difference]: Finished difference Result 16055 states and 27353 transitions. [2024-12-02 14:23:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:23:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 148 [2024-12-02 14:23:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:06,047 INFO L225 Difference]: With dead ends: 16055 [2024-12-02 14:23:06,047 INFO L226 Difference]: Without dead ends: 8180 [2024-12-02 14:23:06,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:23:06,070 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 119 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:06,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5154 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2024-12-02 14:23:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 8100. [2024-12-02 14:23:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 6344 states have (on average 1.6169609079445144) internal successors, (10258), 6517 states have internal predecessors, (10258), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2024-12-02 14:23:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 13780 transitions. [2024-12-02 14:23:06,504 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 13780 transitions. Word has length 148 [2024-12-02 14:23:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:06,505 INFO L471 AbstractCegarLoop]: Abstraction has 8100 states and 13780 transitions. [2024-12-02 14:23:06,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:23:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 13780 transitions. [2024-12-02 14:23:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:23:06,517 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:06,517 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:06,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 14:23:06,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:23:06,718 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:06,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:06,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1700627123, now seen corresponding path program 1 times [2024-12-02 14:23:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905249191] [2024-12-02 14:23:06,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:23:06,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:06,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905249191] [2024-12-02 14:23:06,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905249191] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:06,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924227593] [2024-12-02 14:23:06,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:06,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:06,820 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:06,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 14:23:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:07,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:23:07,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:23:07,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924227593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:07,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:07,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 14:23:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491152386] [2024-12-02 14:23:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:07,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:07,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:23:07,139 INFO L87 Difference]: Start difference. First operand 8100 states and 13780 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:07,538 INFO L93 Difference]: Finished difference Result 16062 states and 27362 transitions. [2024-12-02 14:23:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:07,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 148 [2024-12-02 14:23:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:07,582 INFO L225 Difference]: With dead ends: 16062 [2024-12-02 14:23:07,582 INFO L226 Difference]: Without dead ends: 7930 [2024-12-02 14:23:07,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:23:07,617 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 7 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:07,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2630 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7930 states. [2024-12-02 14:23:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7930 to 7930. [2024-12-02 14:23:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6185167232186137) internal successors, (10017), 6356 states have internal predecessors, (10017), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-12-02 14:23:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13520 transitions. [2024-12-02 14:23:07,931 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13520 transitions. Word has length 148 [2024-12-02 14:23:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:07,931 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13520 transitions. [2024-12-02 14:23:07,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13520 transitions. [2024-12-02 14:23:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 14:23:07,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:07,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:07,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 14:23:08,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 14:23:08,139 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:08,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1288585507, now seen corresponding path program 1 times [2024-12-02 14:23:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:08,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648591111] [2024-12-02 14:23:08,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:08,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 14:23:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648591111] [2024-12-02 14:23:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648591111] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636301257] [2024-12-02 14:23:08,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:08,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:08,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:08,263 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:08,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 14:23:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:08,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:23:08,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:23:08,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636301257] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:08,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 14:23:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278584993] [2024-12-02 14:23:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:08,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:08,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:23:08,612 INFO L87 Difference]: Start difference. First operand 7930 states and 13520 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:08,908 INFO L93 Difference]: Finished difference Result 15862 states and 27053 transitions. [2024-12-02 14:23:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2024-12-02 14:23:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:08,953 INFO L225 Difference]: With dead ends: 15862 [2024-12-02 14:23:08,953 INFO L226 Difference]: Without dead ends: 7963 [2024-12-02 14:23:08,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:23:08,984 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 128 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:08,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2509 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2024-12-02 14:23:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 7930. [2024-12-02 14:23:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6183551462271772) internal successors, (10016), 6356 states have internal predecessors, (10016), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-12-02 14:23:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13519 transitions. [2024-12-02 14:23:09,273 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13519 transitions. Word has length 150 [2024-12-02 14:23:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:09,273 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13519 transitions. [2024-12-02 14:23:09,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13519 transitions. [2024-12-02 14:23:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 14:23:09,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:09,279 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:09,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 14:23:09,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:09,479 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:09,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1314670867, now seen corresponding path program 1 times [2024-12-02 14:23:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128313914] [2024-12-02 14:23:09,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:23:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128313914] [2024-12-02 14:23:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128313914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:09,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:09,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:23:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614248417] [2024-12-02 14:23:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:09,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:23:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:09,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:23:09,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:23:09,596 INFO L87 Difference]: Start difference. First operand 7930 states and 13519 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:23:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:09,863 INFO L93 Difference]: Finished difference Result 11383 states and 19319 transitions. [2024-12-02 14:23:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:23:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 151 [2024-12-02 14:23:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:09,896 INFO L225 Difference]: With dead ends: 11383 [2024-12-02 14:23:09,896 INFO L226 Difference]: Without dead ends: 7965 [2024-12-02 14:23:09,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:23:09,910 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 115 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:09,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5148 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2024-12-02 14:23:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7930. [2024-12-02 14:23:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6183551462271772) internal successors, (10016), 6356 states have internal predecessors, (10016), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-12-02 14:23:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13519 transitions. [2024-12-02 14:23:10,324 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13519 transitions. Word has length 151 [2024-12-02 14:23:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:10,324 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13519 transitions. [2024-12-02 14:23:10,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:23:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13519 transitions. [2024-12-02 14:23:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 14:23:10,333 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:10,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:10,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 14:23:10,333 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:10,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2036871234, now seen corresponding path program 1 times [2024-12-02 14:23:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621180584] [2024-12-02 14:23:10,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 14:23:10,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:10,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621180584] [2024-12-02 14:23:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621180584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:10,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:10,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:23:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982983774] [2024-12-02 14:23:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:10,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:10,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:10,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:23:10,420 INFO L87 Difference]: Start difference. First operand 7930 states and 13519 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:10,637 INFO L93 Difference]: Finished difference Result 11432 states and 19401 transitions. [2024-12-02 14:23:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2024-12-02 14:23:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:10,656 INFO L225 Difference]: With dead ends: 11432 [2024-12-02 14:23:10,656 INFO L226 Difference]: Without dead ends: 3517 [2024-12-02 14:23:10,680 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 [2024-12-02 14:23:10,680 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 8 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:10,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2627 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2024-12-02 14:23:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3517. [2024-12-02 14:23:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2766 states have (on average 1.6225596529284165) internal successors, (4488), 2841 states have internal predecessors, (4488), 589 states have call successors, (589), 136 states have call predecessors, (589), 161 states have return successors, (795), 561 states have call predecessors, (795), 584 states have call successors, (795) [2024-12-02 14:23:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 5872 transitions. [2024-12-02 14:23:10,816 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 5872 transitions. Word has length 151 [2024-12-02 14:23:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:10,816 INFO L471 AbstractCegarLoop]: Abstraction has 3517 states and 5872 transitions. [2024-12-02 14:23:10,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:23:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 5872 transitions. [2024-12-02 14:23:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 14:23:10,820 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:10,820 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:10,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 14:23:10,820 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:10,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1039207116, now seen corresponding path program 1 times [2024-12-02 14:23:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950443265] [2024-12-02 14:23:10,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:23:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950443265] [2024-12-02 14:23:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950443265] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:11,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:23:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815452493] [2024-12-02 14:23:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:11,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:23:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:11,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:23:11,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:23:11,038 INFO L87 Difference]: Start difference. First operand 3517 states and 5872 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:23:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:13,297 INFO L93 Difference]: Finished difference Result 12239 states and 21037 transitions. [2024-12-02 14:23:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:23:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 152 [2024-12-02 14:23:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:13,353 INFO L225 Difference]: With dead ends: 12239 [2024-12-02 14:23:13,353 INFO L226 Difference]: Without dead ends: 8832 [2024-12-02 14:23:13,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:23:13,363 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 2332 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 4093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:13,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 1985 Invalid, 4093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 14:23:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2024-12-02 14:23:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 8035. [2024-12-02 14:23:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 6319 states have (on average 1.6344358284538694) internal successors, (10328), 6513 states have internal predecessors, (10328), 1322 states have call successors, (1322), 290 states have call predecessors, (1322), 393 states have return successors, (1905), 1275 states have call predecessors, (1905), 1317 states have call successors, (1905) [2024-12-02 14:23:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 13555 transitions. [2024-12-02 14:23:13,646 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 13555 transitions. Word has length 152 [2024-12-02 14:23:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:13,646 INFO L471 AbstractCegarLoop]: Abstraction has 8035 states and 13555 transitions. [2024-12-02 14:23:13,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 14:23:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 13555 transitions. [2024-12-02 14:23:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 14:23:13,652 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:13,652 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:13,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 14:23:13,653 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:13,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2074646302, now seen corresponding path program 1 times [2024-12-02 14:23:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354501867] [2024-12-02 14:23:13,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:13,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:23:13,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354501867] [2024-12-02 14:23:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354501867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:23:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097771112] [2024-12-02 14:23:13,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:13,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:23:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:13,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:23:13,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:23:13,773 INFO L87 Difference]: Start difference. First operand 8035 states and 13555 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:23:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:14,218 INFO L93 Difference]: Finished difference Result 16078 states and 27450 transitions. [2024-12-02 14:23:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2024-12-02 14:23:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:14,242 INFO L225 Difference]: With dead ends: 16078 [2024-12-02 14:23:14,242 INFO L226 Difference]: Without dead ends: 8153 [2024-12-02 14:23:14,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:23:14,259 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 0 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:14,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3346 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2024-12-02 14:23:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8129. [2024-12-02 14:23:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8129 states, 6399 states have (on average 1.625566494764807) internal successors, (10402), 6577 states have internal predecessors, (10402), 1316 states have call successors, (1316), 290 states have call predecessors, (1316), 413 states have return successors, (1989), 1305 states have call predecessors, (1989), 1311 states have call successors, (1989) [2024-12-02 14:23:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 13707 transitions. [2024-12-02 14:23:14,550 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 13707 transitions. Word has length 157 [2024-12-02 14:23:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:14,550 INFO L471 AbstractCegarLoop]: Abstraction has 8129 states and 13707 transitions. [2024-12-02 14:23:14,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:23:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 13707 transitions. [2024-12-02 14:23:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:23:14,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:14,554 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:14,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 14:23:14,554 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:14,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1128508982, now seen corresponding path program 1 times [2024-12-02 14:23:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226583835] [2024-12-02 14:23:14,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:23:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226583835] [2024-12-02 14:23:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226583835] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:23:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736435204] [2024-12-02 14:23:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:14,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:23:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:14,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:23:14,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:23:14,895 INFO L87 Difference]: Start difference. First operand 8129 states and 13707 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-12-02 14:23:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:17,633 INFO L93 Difference]: Finished difference Result 25578 states and 44189 transitions. [2024-12-02 14:23:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:23:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 161 [2024-12-02 14:23:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:17,699 INFO L225 Difference]: With dead ends: 25578 [2024-12-02 14:23:17,699 INFO L226 Difference]: Without dead ends: 17539 [2024-12-02 14:23:17,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:23:17,726 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 3258 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:17,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 1807 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 14:23:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17539 states. [2024-12-02 14:23:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17539 to 17473. [2024-12-02 14:23:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17473 states, 13614 states have (on average 1.6114294109005436) internal successors, (21938), 14015 states have internal predecessors, (21938), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 921 states have return successors, (4945), 2929 states have call predecessors, (4945), 2932 states have call successors, (4945) [2024-12-02 14:23:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17473 states to 17473 states and 29820 transitions. [2024-12-02 14:23:18,497 INFO L78 Accepts]: Start accepts. Automaton has 17473 states and 29820 transitions. Word has length 161 [2024-12-02 14:23:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:18,498 INFO L471 AbstractCegarLoop]: Abstraction has 17473 states and 29820 transitions. [2024-12-02 14:23:18,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-12-02 14:23:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17473 states and 29820 transitions. [2024-12-02 14:23:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 14:23:18,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:18,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:18,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 14:23:18,501 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:18,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2066987336, now seen corresponding path program 1 times [2024-12-02 14:23:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781749046] [2024-12-02 14:23:18,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:23:18,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:18,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781749046] [2024-12-02 14:23:18,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781749046] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:18,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162618527] [2024-12-02 14:23:18,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:18,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:18,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:18,834 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 14:23:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:19,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:23:19,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:23:19,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162618527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:19,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 14:23:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841801120] [2024-12-02 14:23:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:19,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:19,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:19,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:23:19,334 INFO L87 Difference]: Start difference. First operand 17473 states and 29820 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:23:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:20,454 INFO L93 Difference]: Finished difference Result 35020 states and 61717 transitions. [2024-12-02 14:23:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 164 [2024-12-02 14:23:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:20,533 INFO L225 Difference]: With dead ends: 35020 [2024-12-02 14:23:20,533 INFO L226 Difference]: Without dead ends: 17705 [2024-12-02 14:23:20,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:23:20,590 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 260 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:20,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 2444 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:23:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2024-12-02 14:23:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17489. [2024-12-02 14:23:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17489 states, 13622 states have (on average 1.5949199823814417) internal successors, (21726), 14031 states have internal predecessors, (21726), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 929 states have return successors, (4969), 2929 states have call predecessors, (4969), 2932 states have call successors, (4969) [2024-12-02 14:23:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 29632 transitions. [2024-12-02 14:23:21,338 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 29632 transitions. Word has length 164 [2024-12-02 14:23:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:21,338 INFO L471 AbstractCegarLoop]: Abstraction has 17489 states and 29632 transitions. [2024-12-02 14:23:21,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:23:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 29632 transitions. [2024-12-02 14:23:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 14:23:21,341 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:21,341 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:21,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 14:23:21,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 14:23:21,542 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:21,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 69806178, now seen corresponding path program 1 times [2024-12-02 14:23:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611480448] [2024-12-02 14:23:21,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:23:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611480448] [2024-12-02 14:23:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611480448] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336741986] [2024-12-02 14:23:21,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:21,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:21,775 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:21,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 14:23:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:22,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:23:22,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:23:22,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336741986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:22,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 14:23:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780155613] [2024-12-02 14:23:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:22,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:22,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:22,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:23:22,191 INFO L87 Difference]: Start difference. First operand 17489 states and 29632 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:23:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:23,037 INFO L93 Difference]: Finished difference Result 35128 states and 61038 transitions. [2024-12-02 14:23:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2024-12-02 14:23:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:23,122 INFO L225 Difference]: With dead ends: 35128 [2024-12-02 14:23:23,122 INFO L226 Difference]: Without dead ends: 17661 [2024-12-02 14:23:23,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:23:23,184 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 14 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:23,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2432 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:23:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17661 states. [2024-12-02 14:23:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17661 to 17661. [2024-12-02 14:23:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17661 states, 13762 states have (on average 1.5789856125563144) internal successors, (21730), 14185 states have internal predecessors, (21730), 2937 states have call successors, (2937), 656 states have call predecessors, (2937), 961 states have return successors, (5001), 2929 states have call predecessors, (5001), 2932 states have call successors, (5001) [2024-12-02 14:23:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17661 states to 17661 states and 29668 transitions. [2024-12-02 14:23:24,295 INFO L78 Accepts]: Start accepts. Automaton has 17661 states and 29668 transitions. Word has length 168 [2024-12-02 14:23:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:24,295 INFO L471 AbstractCegarLoop]: Abstraction has 17661 states and 29668 transitions. [2024-12-02 14:23:24,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:23:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17661 states and 29668 transitions. [2024-12-02 14:23:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 14:23:24,298 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:24,298 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:24,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 14:23:24,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 14:23:24,499 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:24,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -310962759, now seen corresponding path program 1 times [2024-12-02 14:23:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47110126] [2024-12-02 14:23:24,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:23:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47110126] [2024-12-02 14:23:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47110126] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:23:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16470277] [2024-12-02 14:23:24,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:24,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:23:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:24,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:23:24,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:23:24,672 INFO L87 Difference]: Start difference. First operand 17661 states and 29668 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 14:23:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:27,455 INFO L93 Difference]: Finished difference Result 35750 states and 61248 transitions. [2024-12-02 14:23:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:23:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 169 [2024-12-02 14:23:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:27,609 INFO L225 Difference]: With dead ends: 35750 [2024-12-02 14:23:27,609 INFO L226 Difference]: Without dead ends: 20437 [2024-12-02 14:23:27,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:23:27,691 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 2016 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:27,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1730 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:23:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20437 states. [2024-12-02 14:23:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20437 to 18319. [2024-12-02 14:23:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18319 states, 14248 states have (on average 1.5701852891633914) internal successors, (22372), 14711 states have internal predecessors, (22372), 3003 states have call successors, (3003), 716 states have call predecessors, (3003), 1067 states have return successors, (5315), 3001 states have call predecessors, (5315), 2998 states have call successors, (5315) [2024-12-02 14:23:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18319 states to 18319 states and 30690 transitions. [2024-12-02 14:23:28,799 INFO L78 Accepts]: Start accepts. Automaton has 18319 states and 30690 transitions. Word has length 169 [2024-12-02 14:23:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:28,800 INFO L471 AbstractCegarLoop]: Abstraction has 18319 states and 30690 transitions. [2024-12-02 14:23:28,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 14:23:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 18319 states and 30690 transitions. [2024-12-02 14:23:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 14:23:28,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:28,804 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:28,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 14:23:28,805 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:28,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1413839507, now seen corresponding path program 1 times [2024-12-02 14:23:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184386291] [2024-12-02 14:23:28,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 14:23:28,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:28,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184386291] [2024-12-02 14:23:28,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184386291] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:28,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314722981] [2024-12-02 14:23:28,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:28,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:29,000 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 14:23:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:29,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:23:29,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:23:29,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314722981] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 14:23:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772726770] [2024-12-02 14:23:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:29,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:23:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:29,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:23:29,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:23:29,425 INFO L87 Difference]: Start difference. First operand 18319 states and 30690 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:23:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:30,824 INFO L93 Difference]: Finished difference Result 39549 states and 67652 transitions. [2024-12-02 14:23:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:23:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2024-12-02 14:23:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:30,954 INFO L225 Difference]: With dead ends: 39549 [2024-12-02 14:23:30,954 INFO L226 Difference]: Without dead ends: 23292 [2024-12-02 14:23:31,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:23:31,025 INFO L435 NwaCegarLoop]: 1346 mSDtfsCounter, 744 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:31,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 2173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23292 states. [2024-12-02 14:23:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23292 to 21891. [2024-12-02 14:23:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21891 states, 17089 states have (on average 1.57194686640529) internal successors, (26863), 17581 states have internal predecessors, (26863), 3560 states have call successors, (3560), 862 states have call predecessors, (3560), 1241 states have return successors, (6553), 3579 states have call predecessors, (6553), 3555 states have call successors, (6553) [2024-12-02 14:23:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21891 states to 21891 states and 36976 transitions. [2024-12-02 14:23:32,226 INFO L78 Accepts]: Start accepts. Automaton has 21891 states and 36976 transitions. Word has length 174 [2024-12-02 14:23:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:32,226 INFO L471 AbstractCegarLoop]: Abstraction has 21891 states and 36976 transitions. [2024-12-02 14:23:32,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:23:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21891 states and 36976 transitions. [2024-12-02 14:23:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:23:32,229 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:32,230 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:32,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 14:23:32,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 14:23:32,430 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:32,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1425736522, now seen corresponding path program 1 times [2024-12-02 14:23:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528951626] [2024-12-02 14:23:32,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 14:23:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528951626] [2024-12-02 14:23:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528951626] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743447345] [2024-12-02 14:23:32,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:32,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:32,781 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:32,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 14:23:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:33,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 2184 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:23:33,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 14:23:33,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743447345] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:33,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:33,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:23:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429216061] [2024-12-02 14:23:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:33,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:23:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:33,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:23:33,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:23:33,290 INFO L87 Difference]: Start difference. First operand 21891 states and 36976 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:23:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:36,903 INFO L93 Difference]: Finished difference Result 45233 states and 78192 transitions. [2024-12-02 14:23:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:23:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2024-12-02 14:23:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:37,014 INFO L225 Difference]: With dead ends: 45233 [2024-12-02 14:23:37,014 INFO L226 Difference]: Without dead ends: 24982 [2024-12-02 14:23:37,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:23:37,082 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 1772 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:37,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 2466 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:23:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24982 states. [2024-12-02 14:23:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24982 to 22503. [2024-12-02 14:23:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22503 states, 17461 states have (on average 1.5666342133898403) internal successors, (27355), 18019 states have internal predecessors, (27355), 3752 states have call successors, (3752), 862 states have call predecessors, (3752), 1289 states have return successors, (7377), 3753 states have call predecessors, (7377), 3747 states have call successors, (7377) [2024-12-02 14:23:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22503 states to 22503 states and 38484 transitions. [2024-12-02 14:23:38,198 INFO L78 Accepts]: Start accepts. Automaton has 22503 states and 38484 transitions. Word has length 176 [2024-12-02 14:23:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:38,199 INFO L471 AbstractCegarLoop]: Abstraction has 22503 states and 38484 transitions. [2024-12-02 14:23:38,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:23:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 22503 states and 38484 transitions. [2024-12-02 14:23:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 14:23:38,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:38,202 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:38,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 14:23:38,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 14:23:38,403 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:38,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1837486229, now seen corresponding path program 1 times [2024-12-02 14:23:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:38,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615224643] [2024-12-02 14:23:38,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 14:23:38,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:38,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615224643] [2024-12-02 14:23:38,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615224643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:38,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:38,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:23:38,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916124962] [2024-12-02 14:23:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:38,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:23:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:38,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:23:38,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:23:38,738 INFO L87 Difference]: Start difference. First operand 22503 states and 38484 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:23:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:41,175 INFO L93 Difference]: Finished difference Result 45066 states and 77399 transitions. [2024-12-02 14:23:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:23:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2024-12-02 14:23:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:41,270 INFO L225 Difference]: With dead ends: 45066 [2024-12-02 14:23:41,270 INFO L226 Difference]: Without dead ends: 22665 [2024-12-02 14:23:41,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:23:41,332 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 1222 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:41,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1756 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:23:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22665 states. [2024-12-02 14:23:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22665 to 22547. [2024-12-02 14:23:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22547 states, 17483 states have (on average 1.559000171595264) internal successors, (27256), 18063 states have internal predecessors, (27256), 3752 states have call successors, (3752), 862 states have call predecessors, (3752), 1311 states have return successors, (7553), 3753 states have call predecessors, (7553), 3747 states have call successors, (7553) [2024-12-02 14:23:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22547 states to 22547 states and 38561 transitions. [2024-12-02 14:23:42,652 INFO L78 Accepts]: Start accepts. Automaton has 22547 states and 38561 transitions. Word has length 174 [2024-12-02 14:23:42,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:42,652 INFO L471 AbstractCegarLoop]: Abstraction has 22547 states and 38561 transitions. [2024-12-02 14:23:42,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:23:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 22547 states and 38561 transitions. [2024-12-02 14:23:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 14:23:42,655 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:42,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 14:23:42,655 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1818756694, now seen corresponding path program 1 times [2024-12-02 14:23:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:42,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978073158] [2024-12-02 14:23:42,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 14:23:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978073158] [2024-12-02 14:23:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978073158] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:42,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:23:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589239733] [2024-12-02 14:23:42,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:42,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:23:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:42,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:23:42,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:23:42,778 INFO L87 Difference]: Start difference. First operand 22547 states and 38561 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:23:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:47,157 INFO L93 Difference]: Finished difference Result 63774 states and 113644 transitions. [2024-12-02 14:23:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:23:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2024-12-02 14:23:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:47,469 INFO L225 Difference]: With dead ends: 63774 [2024-12-02 14:23:47,469 INFO L226 Difference]: Without dead ends: 41355 [2024-12-02 14:23:47,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:23:47,606 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 2050 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:47,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 1229 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 14:23:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41355 states. [2024-12-02 14:23:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41355 to 38457. [2024-12-02 14:23:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38457 states, 29586 states have (on average 1.551882647197999) internal successors, (45914), 30648 states have internal predecessors, (45914), 6629 states have call successors, (6629), 1439 states have call predecessors, (6629), 2241 states have return successors, (14554), 6693 states have call predecessors, (14554), 6624 states have call successors, (14554) [2024-12-02 14:23:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38457 states to 38457 states and 67097 transitions. [2024-12-02 14:23:50,437 INFO L78 Accepts]: Start accepts. Automaton has 38457 states and 67097 transitions. Word has length 175 [2024-12-02 14:23:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:50,437 INFO L471 AbstractCegarLoop]: Abstraction has 38457 states and 67097 transitions. [2024-12-02 14:23:50,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:23:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 38457 states and 67097 transitions. [2024-12-02 14:23:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:23:50,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:50,442 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:50,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 14:23:50,442 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:50,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1463524130, now seen corresponding path program 1 times [2024-12-02 14:23:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871303923] [2024-12-02 14:23:50,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:23:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871303923] [2024-12-02 14:23:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871303923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:50,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:50,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:23:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377770824] [2024-12-02 14:23:50,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:50,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:50,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:50,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:23:50,724 INFO L87 Difference]: Start difference. First operand 38457 states and 67097 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:23:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:57,982 INFO L93 Difference]: Finished difference Result 117485 states and 215253 transitions. [2024-12-02 14:23:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:23:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 185 [2024-12-02 14:23:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:58,510 INFO L225 Difference]: With dead ends: 117485 [2024-12-02 14:23:58,510 INFO L226 Difference]: Without dead ends: 79132 [2024-12-02 14:23:58,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:23:58,887 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 1896 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:58,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 381 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 14:23:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79132 states. [2024-12-02 14:24:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79132 to 79130. [2024-12-02 14:24:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79130 states, 60917 states have (on average 1.5354991217558318) internal successors, (93538), 63364 states have internal predecessors, (93538), 13392 states have call successors, (13392), 2874 states have call predecessors, (13392), 4820 states have return successors, (36294), 13539 states have call predecessors, (36294), 13387 states have call successors, (36294) [2024-12-02 14:24:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79130 states to 79130 states and 143224 transitions. [2024-12-02 14:24:05,105 INFO L78 Accepts]: Start accepts. Automaton has 79130 states and 143224 transitions. Word has length 185 [2024-12-02 14:24:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:05,106 INFO L471 AbstractCegarLoop]: Abstraction has 79130 states and 143224 transitions. [2024-12-02 14:24:05,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:24:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 79130 states and 143224 transitions. [2024-12-02 14:24:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 14:24:05,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:05,130 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:05,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 14:24:05,130 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:05,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1098055889, now seen corresponding path program 1 times [2024-12-02 14:24:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653699623] [2024-12-02 14:24:05,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 14:24:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653699623] [2024-12-02 14:24:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653699623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:24:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999089396] [2024-12-02 14:24:05,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:24:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:24:05,341 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:24:05,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 14:24:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:05,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:24:05,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:24:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 14:24:05,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:24:05,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999089396] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:05,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:24:05,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:24:05,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310181759] [2024-12-02 14:24:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:05,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:24:05,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:05,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:24:05,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:24:05,866 INFO L87 Difference]: Start difference. First operand 79130 states and 143224 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 14:24:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:10,408 INFO L93 Difference]: Finished difference Result 116369 states and 207954 transitions. [2024-12-02 14:24:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:24:10,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 189 [2024-12-02 14:24:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:10,734 INFO L225 Difference]: With dead ends: 116369 [2024-12-02 14:24:10,734 INFO L226 Difference]: Without dead ends: 37340 [2024-12-02 14:24:11,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:24:11,202 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 15 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:11,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2425 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:24:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37340 states. [2024-12-02 14:24:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37340 to 37340. [2024-12-02 14:24:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37340 states, 28841 states have (on average 1.5403418744148956) internal successors, (44425), 29902 states have internal predecessors, (44425), 6257 states have call successors, (6257), 1439 states have call predecessors, (6257), 2241 states have return successors, (14183), 6322 states have call predecessors, (14183), 6253 states have call successors, (14183) [2024-12-02 14:24:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37340 states to 37340 states and 64865 transitions. [2024-12-02 14:24:13,952 INFO L78 Accepts]: Start accepts. Automaton has 37340 states and 64865 transitions. Word has length 189 [2024-12-02 14:24:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:13,952 INFO L471 AbstractCegarLoop]: Abstraction has 37340 states and 64865 transitions. [2024-12-02 14:24:13,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 14:24:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 37340 states and 64865 transitions. [2024-12-02 14:24:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:24:13,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:13,956 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:13,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 14:24:14,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-12-02 14:24:14,157 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:14,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash -487076096, now seen corresponding path program 1 times [2024-12-02 14:24:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:14,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25113378] [2024-12-02 14:24:14,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:14,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 14:24:14,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:14,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25113378] [2024-12-02 14:24:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25113378] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:24:14,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483282934] [2024-12-02 14:24:14,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:24:14,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:24:14,473 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:24:14,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 14:24:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:14,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:24:14,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:24:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 14:24:14,874 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:24:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483282934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:24:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-12-02 14:24:14,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035424271] [2024-12-02 14:24:14,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:14,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:24:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:14,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:24:14,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:24:14,875 INFO L87 Difference]: Start difference. First operand 37340 states and 64865 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-12-02 14:24:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:16,811 INFO L93 Difference]: Finished difference Result 37525 states and 65109 transitions. [2024-12-02 14:24:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:24:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 184 [2024-12-02 14:24:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:17,089 INFO L225 Difference]: With dead ends: 37525 [2024-12-02 14:24:17,090 INFO L226 Difference]: Without dead ends: 37511 [2024-12-02 14:24:17,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:24:17,105 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 0 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:17,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3278 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:24:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37511 states. [2024-12-02 14:24:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37511 to 37511. [2024-12-02 14:24:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37511 states, 29012 states have (on average 1.5358472356266373) internal successors, (44558), 30073 states have internal predecessors, (44558), 6257 states have call successors, (6257), 1439 states have call predecessors, (6257), 2241 states have return successors, (14183), 6322 states have call predecessors, (14183), 6253 states have call successors, (14183) [2024-12-02 14:24:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37511 states to 37511 states and 64998 transitions. [2024-12-02 14:24:20,544 INFO L78 Accepts]: Start accepts. Automaton has 37511 states and 64998 transitions. Word has length 184 [2024-12-02 14:24:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:20,545 INFO L471 AbstractCegarLoop]: Abstraction has 37511 states and 64998 transitions. [2024-12-02 14:24:20,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-12-02 14:24:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 37511 states and 64998 transitions. [2024-12-02 14:24:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 14:24:20,552 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:20,552 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:20,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 14:24:20,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 14:24:20,753 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:20,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 860825702, now seen corresponding path program 1 times [2024-12-02 14:24:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399790620] [2024-12-02 14:24:20,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 14:24:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399790620] [2024-12-02 14:24:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399790620] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:24:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450182766] [2024-12-02 14:24:21,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:21,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:24:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:24:21,312 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:24:21,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 14:24:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:21,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 14:24:21,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:24:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 14:24:21,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:24:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 14:24:22,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450182766] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:24:22,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:24:22,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 26 [2024-12-02 14:24:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690564416] [2024-12-02 14:24:22,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:24:22,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 14:24:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:22,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 14:24:22,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:24:22,601 INFO L87 Difference]: Start difference. First operand 37511 states and 64998 transitions. Second operand has 26 states, 25 states have (on average 12.52) internal successors, (313), 22 states have internal predecessors, (313), 11 states have call successors, (56), 6 states have call predecessors, (56), 15 states have return successors, (57), 14 states have call predecessors, (57), 10 states have call successors, (57) [2024-12-02 14:24:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:46,716 INFO L93 Difference]: Finished difference Result 207133 states and 369954 transitions. [2024-12-02 14:24:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 14:24:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 12.52) internal successors, (313), 22 states have internal predecessors, (313), 11 states have call successors, (56), 6 states have call predecessors, (56), 15 states have return successors, (57), 14 states have call predecessors, (57), 10 states have call successors, (57) Word has length 212 [2024-12-02 14:24:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:47,734 INFO L225 Difference]: With dead ends: 207133 [2024-12-02 14:24:47,735 INFO L226 Difference]: Without dead ends: 169759 [2024-12-02 14:24:47,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 430 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=580, Invalid=3202, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 14:24:47,977 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 6353 mSDsluCounter, 19124 mSDsCounter, 0 mSdLazyCounter, 28292 mSolverCounterSat, 1949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6421 SdHoareTripleChecker+Valid, 20635 SdHoareTripleChecker+Invalid, 30241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1949 IncrementalHoareTripleChecker+Valid, 28292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:47,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6421 Valid, 20635 Invalid, 30241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1949 Valid, 28292 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-12-02 14:24:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169759 states. [2024-12-02 14:25:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169759 to 167843. [2024-12-02 14:25:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167843 states, 128727 states have (on average 1.5279700451342764) internal successors, (196691), 133528 states have internal predecessors, (196691), 29263 states have call successors, (29263), 5736 states have call predecessors, (29263), 9852 states have return successors, (74536), 30234 states have call predecessors, (74536), 29259 states have call successors, (74536) [2024-12-02 14:25:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167843 states to 167843 states and 300490 transitions. [2024-12-02 14:25:01,937 INFO L78 Accepts]: Start accepts. Automaton has 167843 states and 300490 transitions. Word has length 212 [2024-12-02 14:25:01,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:25:01,938 INFO L471 AbstractCegarLoop]: Abstraction has 167843 states and 300490 transitions. [2024-12-02 14:25:01,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 12.52) internal successors, (313), 22 states have internal predecessors, (313), 11 states have call successors, (56), 6 states have call predecessors, (56), 15 states have return successors, (57), 14 states have call predecessors, (57), 10 states have call successors, (57) [2024-12-02 14:25:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 167843 states and 300490 transitions. [2024-12-02 14:25:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 14:25:01,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:25:01,966 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:25:01,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 14:25:02,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:25:02,167 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:25:02,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:25:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1165159415, now seen corresponding path program 1 times [2024-12-02 14:25:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:25:02,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302959631] [2024-12-02 14:25:02,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:25:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-02 14:25:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:25:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302959631] [2024-12-02 14:25:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302959631] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:25:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298025467] [2024-12-02 14:25:02,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:25:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:25:02,276 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:25:02,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 14:25:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:02,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:25:02,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:25:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 14:25:02,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:25:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298025467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:25:02,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:25:02,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:25:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054291001] [2024-12-02 14:25:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:25:02,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:25:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:25:02,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:25:02,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:25:02,665 INFO L87 Difference]: Start difference. First operand 167843 states and 300490 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 14:25:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:25:18,883 INFO L93 Difference]: Finished difference Result 339873 states and 627614 transitions. [2024-12-02 14:25:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:25:18,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 215 [2024-12-02 14:25:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:25:20,012 INFO L225 Difference]: With dead ends: 339873 [2024-12-02 14:25:20,012 INFO L226 Difference]: Without dead ends: 172115 [2024-12-02 14:25:21,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:25:21,114 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 10 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:25:21,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2389 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:25:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172115 states. [2024-12-02 14:25:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172115 to 171747. [2024-12-02 14:25:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171747 states, 132074 states have (on average 1.5288171782485576) internal successors, (201917), 137005 states have internal predecessors, (201917), 29263 states have call successors, (29263), 6220 states have call predecessors, (29263), 10409 states have return successors, (73377), 30177 states have call predecessors, (73377), 29259 states have call successors, (73377) [2024-12-02 14:25:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171747 states to 171747 states and 304557 transitions. [2024-12-02 14:25:35,425 INFO L78 Accepts]: Start accepts. Automaton has 171747 states and 304557 transitions. Word has length 215 [2024-12-02 14:25:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:25:35,426 INFO L471 AbstractCegarLoop]: Abstraction has 171747 states and 304557 transitions. [2024-12-02 14:25:35,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 14:25:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 171747 states and 304557 transitions. [2024-12-02 14:25:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-12-02 14:25:35,750 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:25:35,750 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:25:35,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 14:25:35,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 14:25:35,951 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:25:35,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:25:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1583101106, now seen corresponding path program 1 times [2024-12-02 14:25:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:25:35,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771583395] [2024-12-02 14:25:35,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:35,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:25:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-02 14:25:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:25:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771583395] [2024-12-02 14:25:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771583395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:25:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193079084] [2024-12-02 14:25:36,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:36,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:25:36,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:25:36,163 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:25:36,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 14:25:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:36,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:25:36,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:25:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 14:25:36,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:25:36,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193079084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:25:36,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:25:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 14:25:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369554327] [2024-12-02 14:25:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:25:36,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:25:36,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:25:36,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:25:36,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:25:36,565 INFO L87 Difference]: Start difference. First operand 171747 states and 304557 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 14:25:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:25:48,945 INFO L93 Difference]: Finished difference Result 296219 states and 524120 transitions. [2024-12-02 14:25:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:25:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 214 [2024-12-02 14:25:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:25:50,458 INFO L225 Difference]: With dead ends: 296219 [2024-12-02 14:25:50,458 INFO L226 Difference]: Without dead ends: 171747 [2024-12-02 14:25:51,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:25:51,362 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 9 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:25:51,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2441 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:25:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171747 states. [2024-12-02 14:26:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171747 to 171741. [2024-12-02 14:26:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171741 states, 132068 states have (on average 1.5288109155889391) internal successors, (201907), 136999 states have internal predecessors, (201907), 29263 states have call successors, (29263), 6220 states have call predecessors, (29263), 10409 states have return successors, (73377), 30177 states have call predecessors, (73377), 29259 states have call successors, (73377) [2024-12-02 14:26:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171741 states to 171741 states and 304547 transitions. [2024-12-02 14:26:04,758 INFO L78 Accepts]: Start accepts. Automaton has 171741 states and 304547 transitions. Word has length 214 [2024-12-02 14:26:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:26:04,758 INFO L471 AbstractCegarLoop]: Abstraction has 171741 states and 304547 transitions. [2024-12-02 14:26:04,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 14:26:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 171741 states and 304547 transitions. [2024-12-02 14:26:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-12-02 14:26:04,781 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:26:04,782 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:26:04,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-02 14:26:04,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:26:04,982 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:26:04,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:26:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1295106076, now seen corresponding path program 1 times [2024-12-02 14:26:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:26:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420402272] [2024-12-02 14:26:04,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:26:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-02 14:26:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:26:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420402272] [2024-12-02 14:26:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420402272] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:26:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876640711] [2024-12-02 14:26:05,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:26:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:26:05,094 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:26:05,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-02 14:26:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:05,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:26:05,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:26:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 14:26:05,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:26:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876640711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:26:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:26:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:26:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592405988] [2024-12-02 14:26:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:26:05,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:26:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:26:05,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:26:05,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:26:05,511 INFO L87 Difference]: Start difference. First operand 171741 states and 304547 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 14:26:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:26:20,210 INFO L93 Difference]: Finished difference Result 345075 states and 634609 transitions. [2024-12-02 14:26:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:26:20,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 217 [2024-12-02 14:26:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:26:21,668 INFO L225 Difference]: With dead ends: 345075 [2024-12-02 14:26:21,668 INFO L226 Difference]: Without dead ends: 172293 [2024-12-02 14:26:23,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:26:23,103 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 12 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:26:23,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2393 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:26:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172293 states. [2024-12-02 14:26:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172293 to 172101. [2024-12-02 14:26:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172101 states, 132476 states have (on average 1.5154367583562305) internal successors, (200759), 137283 states have internal predecessors, (200759), 29263 states have call successors, (29263), 6296 states have call predecessors, (29263), 10361 states have return successors, (72981), 30177 states have call predecessors, (72981), 29259 states have call successors, (72981) [2024-12-02 14:26:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172101 states to 172101 states and 303003 transitions. [2024-12-02 14:26:36,355 INFO L78 Accepts]: Start accepts. Automaton has 172101 states and 303003 transitions. Word has length 217 [2024-12-02 14:26:36,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:26:36,355 INFO L471 AbstractCegarLoop]: Abstraction has 172101 states and 303003 transitions. [2024-12-02 14:26:36,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 14:26:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 172101 states and 303003 transitions. [2024-12-02 14:26:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 14:26:36,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:26:36,383 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:26:36,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-02 14:26:36,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 14:26:36,584 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:26:36,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:26:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 792866841, now seen corresponding path program 1 times [2024-12-02 14:26:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:26:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660011816] [2024-12-02 14:26:36,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:26:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-12-02 14:26:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:26:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660011816] [2024-12-02 14:26:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660011816] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:26:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956921689] [2024-12-02 14:26:36,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:36,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:26:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:26:36,685 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:26:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d219b-b67d-4d75-8508-fa7976b48d0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 14:26:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:37,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 14:26:37,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:26:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 14:26:37,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:26:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 14:26:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956921689] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:26:37,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:26:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 8] total 16 [2024-12-02 14:26:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791006377] [2024-12-02 14:26:37,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:26:37,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:26:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:26:37,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:26:37,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:26:37,883 INFO L87 Difference]: Start difference. First operand 172101 states and 303003 transitions. Second operand has 16 states, 16 states have (on average 16.1875) internal successors, (259), 14 states have internal predecessors, (259), 7 states have call successors, (49), 5 states have call predecessors, (49), 11 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-02 14:27:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:27:13,931 INFO L93 Difference]: Finished difference Result 556097 states and 1046579 transitions. [2024-12-02 14:27:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:27:13,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.1875) internal successors, (259), 14 states have internal predecessors, (259), 7 states have call successors, (49), 5 states have call predecessors, (49), 11 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50) Word has length 218 [2024-12-02 14:27:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:27:16,909 INFO L225 Difference]: With dead ends: 556097 [2024-12-02 14:27:16,909 INFO L226 Difference]: Without dead ends: 379387