./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/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 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:47:54,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:47:54,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:47:54,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:47:54,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:47:54,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:47:54,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:47:54,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:47:54,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:47:54,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:47:54,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:47:54,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:47:54,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:47:54,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:47:54,447 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:47:54,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:47:54,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:47:54,447 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:47:54,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:47:54,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:54,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:54,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:54,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:47:54,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:47:54,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:47:54,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:47:54,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:47:54,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:47:54,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:47:54,450 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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/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 -> 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 [2024-12-02 12:47:54,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:47:54,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:47:54,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:47:54,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:47:54,725 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:47:54,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2024-12-02 12:47:57,547 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/data/6fcec13a9/95b5db19ea5b4c999c8bec39732aec23/FLAGde19b39b5 [2024-12-02 12:47:57,848 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:47:57,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2024-12-02 12:47:57,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/data/6fcec13a9/95b5db19ea5b4c999c8bec39732aec23/FLAGde19b39b5 [2024-12-02 12:47:57,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/data/6fcec13a9/95b5db19ea5b4c999c8bec39732aec23 [2024-12-02 12:47:57,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:47:57,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:47:57,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:57,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:47:57,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:47:57,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:57" (1/1) ... [2024-12-02 12:47:57,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cc73a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:57, skipping insertion in model container [2024-12-02 12:47:57,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:57" (1/1) ... [2024-12-02 12:47:57,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:47:58,157 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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2024-12-02 12:47:58,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:58,422 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:47:58,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-12-02 12:47:58,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2024-12-02 12:47:58,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [183] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [284] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [293] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [960] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1122] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2737] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2775] [2024-12-02 12:47:58,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3141] [2024-12-02 12:47:58,445 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_8ab3d953-2435-4a94-a1aa-3fb60df602c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2024-12-02 12:47:58,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:58,561 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:47:58,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58 WrapperNode [2024-12-02 12:47:58,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:58,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:58,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:47:58,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:47:58,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,621 INFO L138 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 923 [2024-12-02 12:47:58,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:58,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:47:58,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:47:58,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:47:58,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,662 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 12:47:58,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:47:58,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:47:58,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:47:58,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:47:58,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (1/1) ... [2024-12-02 12:47:58,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:58,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:58,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:47:58,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 12:47:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 12:47:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 12:47:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 12:47:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 12:47:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 12:47:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:47:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 12:47:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 12:47:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 12:47:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 12:47:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 12:47:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 12:47:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 12:47:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-12-02 12:47:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 12:47:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 12:47:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 12:47:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:47:58,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:47:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 12:47:58,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 12:47:58,978 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:47:58,981 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:48:00,199 INFO L? ?]: Removed 477 outVars from TransFormulas that were not future-live. [2024-12-02 12:48:00,199 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:48:00,221 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:48:00,221 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:48:00,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:00 BoogieIcfgContainer [2024-12-02 12:48:00,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:48:00,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:48:00,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:48:00,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:48:00,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:47:57" (1/3) ... [2024-12-02 12:48:00,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d70b41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:00, skipping insertion in model container [2024-12-02 12:48:00,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:58" (2/3) ... [2024-12-02 12:48:00,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d70b41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:00, skipping insertion in model container [2024-12-02 12:48:00,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:00" (3/3) ... [2024-12-02 12:48:00,231 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product31.cil.c [2024-12-02 12:48:00,246 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:48:00,249 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec9_product31.cil.c that has 27 procedures, 586 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:48:00,319 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:48:00,331 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;@5eb31554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:48:00,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:48:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 586 states, 459 states have (on average 1.6840958605664489) internal successors, (773), 480 states have internal predecessors, (773), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 12:48:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 12:48:00,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:00,362 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 12:48:00,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:00,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1039925589, now seen corresponding path program 1 times [2024-12-02 12:48:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728525355] [2024-12-02 12:48:00,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:00,906 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 12:48:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:00,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728525355] [2024-12-02 12:48:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728525355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:00,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:00,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070752476] [2024-12-02 12:48:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:00,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:00,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:00,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:00,939 INFO L87 Difference]: Start difference. First operand has 586 states, 459 states have (on average 1.6840958605664489) internal successors, (773), 480 states have internal predecessors, (773), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:01,093 INFO L93 Difference]: Finished difference Result 1152 states and 1917 transitions. [2024-12-02 12:48:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:01,095 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 106 [2024-12-02 12:48:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:01,112 INFO L225 Difference]: With dead ends: 1152 [2024-12-02 12:48:01,112 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 12:48:01,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:01,122 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 5 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:01,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2846 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 12:48:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 12:48:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6799116997792494) internal successors, (761), 472 states have internal predecessors, (761), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 954 transitions. [2024-12-02 12:48:01,223 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 954 transitions. Word has length 106 [2024-12-02 12:48:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:01,223 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 954 transitions. [2024-12-02 12:48:01,224 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 954 transitions. [2024-12-02 12:48:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 12:48:01,230 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:01,230 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 12:48:01,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:48:01,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash 445700648, now seen corresponding path program 1 times [2024-12-02 12:48:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531279658] [2024-12-02 12:48:01,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:01,454 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 12:48:01,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531279658] [2024-12-02 12:48:01,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531279658] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:01,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:01,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:01,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945995230] [2024-12-02 12:48:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:01,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:01,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:01,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:01,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:01,458 INFO L87 Difference]: Start difference. First operand 578 states and 954 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:01,551 INFO L93 Difference]: Finished difference Result 1138 states and 1885 transitions. [2024-12-02 12:48:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:01,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2024-12-02 12:48:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:01,559 INFO L225 Difference]: With dead ends: 1138 [2024-12-02 12:48:01,559 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 12:48:01,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:01,564 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 4 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:01,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2825 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 12:48:01,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 12:48:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6777041942604856) internal successors, (760), 472 states have internal predecessors, (760), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 953 transitions. [2024-12-02 12:48:01,600 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 953 transitions. Word has length 108 [2024-12-02 12:48:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:01,600 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 953 transitions. [2024-12-02 12:48:01,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 953 transitions. [2024-12-02 12:48:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 12:48:01,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:01,606 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 12:48:01,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:48:01,606 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:01,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1135566183, now seen corresponding path program 1 times [2024-12-02 12:48:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374570776] [2024-12-02 12:48:01,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:01,780 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 12:48:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374570776] [2024-12-02 12:48:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374570776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942485735] [2024-12-02 12:48:01,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:01,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:01,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:01,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:01,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:01,784 INFO L87 Difference]: Start difference. First operand 578 states and 953 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:01,858 INFO L93 Difference]: Finished difference Result 1138 states and 1884 transitions. [2024-12-02 12:48:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:01,859 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2024-12-02 12:48:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:01,864 INFO L225 Difference]: With dead ends: 1138 [2024-12-02 12:48:01,864 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 12:48:01,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:01,868 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 3 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:01,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2825 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:01,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 12:48:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 12:48:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6754966887417218) internal successors, (759), 472 states have internal predecessors, (759), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 952 transitions. [2024-12-02 12:48:01,898 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 952 transitions. Word has length 109 [2024-12-02 12:48:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:01,898 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 952 transitions. [2024-12-02 12:48:01,898 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 952 transitions. [2024-12-02 12:48:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 12:48:01,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:01,902 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 12:48:01,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:48:01,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:01,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash -545635572, now seen corresponding path program 1 times [2024-12-02 12:48:01,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:01,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429777450] [2024-12-02 12:48:01,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:02,061 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 12:48:02,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429777450] [2024-12-02 12:48:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429777450] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:02,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665505929] [2024-12-02 12:48:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:02,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:02,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:02,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,064 INFO L87 Difference]: Start difference. First operand 578 states and 952 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:02,118 INFO L93 Difference]: Finished difference Result 1138 states and 1883 transitions. [2024-12-02 12:48:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:02,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2024-12-02 12:48:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:02,124 INFO L225 Difference]: With dead ends: 1138 [2024-12-02 12:48:02,125 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 12:48:02,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,128 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 2 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:02,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2825 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 12:48:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 12:48:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6732891832229582) internal successors, (758), 472 states have internal predecessors, (758), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 951 transitions. [2024-12-02 12:48:02,158 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 951 transitions. Word has length 110 [2024-12-02 12:48:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:02,158 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 951 transitions. [2024-12-02 12:48:02,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 951 transitions. [2024-12-02 12:48:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 12:48:02,163 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:02,163 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:02,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:48:02,164 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:02,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1579488011, now seen corresponding path program 1 times [2024-12-02 12:48:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241608793] [2024-12-02 12:48:02,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:02,330 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 12:48:02,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241608793] [2024-12-02 12:48:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241608793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061597756] [2024-12-02 12:48:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:02,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:02,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:02,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,333 INFO L87 Difference]: Start difference. First operand 578 states and 951 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:02,375 INFO L93 Difference]: Finished difference Result 1138 states and 1882 transitions. [2024-12-02 12:48:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:02,376 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2024-12-02 12:48:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:02,380 INFO L225 Difference]: With dead ends: 1138 [2024-12-02 12:48:02,380 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 12:48:02,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,382 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 1 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2825 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 12:48:02,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2825 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 12:48:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 12:48:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6710816777041944) internal successors, (757), 472 states have internal predecessors, (757), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 950 transitions. [2024-12-02 12:48:02,402 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 950 transitions. Word has length 111 [2024-12-02 12:48:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:02,402 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 950 transitions. [2024-12-02 12:48:02,403 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 950 transitions. [2024-12-02 12:48:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 12:48:02,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:02,405 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:02,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:48:02,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:02,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1441612784, now seen corresponding path program 1 times [2024-12-02 12:48:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748931170] [2024-12-02 12:48:02,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:02,645 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 12:48:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748931170] [2024-12-02 12:48:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748931170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:02,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:02,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989000683] [2024-12-02 12:48:02,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:02,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:02,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:02,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:02,647 INFO L87 Difference]: Start difference. First operand 578 states and 950 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:02,790 INFO L93 Difference]: Finished difference Result 1104 states and 1814 transitions. [2024-12-02 12:48:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:48:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2024-12-02 12:48:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:02,795 INFO L225 Difference]: With dead ends: 1104 [2024-12-02 12:48:02,795 INFO L226 Difference]: Without dead ends: 593 [2024-12-02 12:48:02,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:02,798 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 91 mSDsluCounter, 6483 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:02,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7421 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-12-02 12:48:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2024-12-02 12:48:02,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 463 states have (on average 1.6673866090712743) internal successors, (772), 484 states have internal predecessors, (772), 100 states have call successors, (100), 26 states have call predecessors, (100), 27 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2024-12-02 12:48:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 969 transitions. [2024-12-02 12:48:02,821 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 969 transitions. Word has length 112 [2024-12-02 12:48:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:02,821 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 969 transitions. [2024-12-02 12:48:02,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 969 transitions. [2024-12-02 12:48:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 12:48:02,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:02,825 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:02,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:48:02,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:02,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2117305393, now seen corresponding path program 1 times [2024-12-02 12:48:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574808965] [2024-12-02 12:48:02,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:02,915 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 12:48:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:02,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574808965] [2024-12-02 12:48:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574808965] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032503619] [2024-12-02 12:48:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:02,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:02,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,917 INFO L87 Difference]: Start difference. First operand 591 states and 969 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:02,965 INFO L93 Difference]: Finished difference Result 1156 states and 1908 transitions. [2024-12-02 12:48:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2024-12-02 12:48:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:02,970 INFO L225 Difference]: With dead ends: 1156 [2024-12-02 12:48:02,970 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 12:48:02,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:02,973 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 0 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:02,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2827 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 12:48:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 12:48:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.662192393736018) internal successors, (743), 466 states have internal predecessors, (743), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:02,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 936 transitions. [2024-12-02 12:48:02,992 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 936 transitions. Word has length 112 [2024-12-02 12:48:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:02,992 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 936 transitions. [2024-12-02 12:48:02,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 936 transitions. [2024-12-02 12:48:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 12:48:02,995 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:02,995 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:02,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:48:02,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:02,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -100852498, now seen corresponding path program 1 times [2024-12-02 12:48:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088335994] [2024-12-02 12:48:02,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:03,136 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 12:48:03,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:03,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088335994] [2024-12-02 12:48:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088335994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346957200] [2024-12-02 12:48:03,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:03,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:03,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:03,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:03,138 INFO L87 Difference]: Start difference. First operand 572 states and 936 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:03,340 INFO L93 Difference]: Finished difference Result 1101 states and 1806 transitions. [2024-12-02 12:48:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2024-12-02 12:48:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:03,346 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 12:48:03,346 INFO L226 Difference]: Without dead ends: 581 [2024-12-02 12:48:03,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 12:48:03,348 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 55 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:03,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4436 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:48:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-12-02 12:48:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2024-12-02 12:48:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.6532438478747205) internal successors, (739), 466 states have internal predecessors, (739), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 932 transitions. [2024-12-02 12:48:03,368 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 932 transitions. Word has length 113 [2024-12-02 12:48:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:03,368 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 932 transitions. [2024-12-02 12:48:03,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 932 transitions. [2024-12-02 12:48:03,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 12:48:03,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:03,372 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:03,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:48:03,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:03,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1437776877, now seen corresponding path program 1 times [2024-12-02 12:48:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:03,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416572604] [2024-12-02 12:48:03,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:03,507 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 12:48:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:03,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416572604] [2024-12-02 12:48:03,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416572604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:03,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:03,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777236129] [2024-12-02 12:48:03,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:03,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:03,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:03,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:03,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:03,508 INFO L87 Difference]: Start difference. First operand 572 states and 932 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:03,696 INFO L93 Difference]: Finished difference Result 1101 states and 1802 transitions. [2024-12-02 12:48:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:03,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-12-02 12:48:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:03,701 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 12:48:03,701 INFO L226 Difference]: Without dead ends: 581 [2024-12-02 12:48:03,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 12:48:03,704 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 54 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:03,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4436 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-12-02 12:48:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2024-12-02 12:48:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.6442953020134228) internal successors, (735), 466 states have internal predecessors, (735), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 928 transitions. [2024-12-02 12:48:03,723 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 928 transitions. Word has length 114 [2024-12-02 12:48:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:03,723 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 928 transitions. [2024-12-02 12:48:03,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 928 transitions. [2024-12-02 12:48:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 12:48:03,727 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:03,727 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:03,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:48:03,727 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:03,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1551396649, now seen corresponding path program 1 times [2024-12-02 12:48:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925459980] [2024-12-02 12:48:03,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:03,854 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 12:48:03,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:03,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925459980] [2024-12-02 12:48:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925459980] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:03,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:03,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:03,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711860460] [2024-12-02 12:48:03,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:03,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:03,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:03,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:03,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:03,856 INFO L87 Difference]: Start difference. First operand 572 states and 928 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:04,036 INFO L93 Difference]: Finished difference Result 1101 states and 1798 transitions. [2024-12-02 12:48:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2024-12-02 12:48:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:04,041 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 12:48:04,041 INFO L226 Difference]: Without dead ends: 581 [2024-12-02 12:48:04,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 12:48:04,044 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 53 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:04,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4418 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-12-02 12:48:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 572. [2024-12-02 12:48:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 447 states have (on average 1.6353467561521253) internal successors, (731), 466 states have internal predecessors, (731), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 924 transitions. [2024-12-02 12:48:04,062 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 924 transitions. Word has length 115 [2024-12-02 12:48:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:04,063 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 924 transitions. [2024-12-02 12:48:04,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 924 transitions. [2024-12-02 12:48:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 12:48:04,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:04,066 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:04,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:48:04,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:04,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1952947543, now seen corresponding path program 1 times [2024-12-02 12:48:04,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:04,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835053429] [2024-12-02 12:48:04,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:04,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:04,214 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 12:48:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:04,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835053429] [2024-12-02 12:48:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835053429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:04,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374622728] [2024-12-02 12:48:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:04,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:48:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:04,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:48:04,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:04,216 INFO L87 Difference]: Start difference. First operand 572 states and 924 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:04,294 INFO L93 Difference]: Finished difference Result 1092 states and 1780 transitions. [2024-12-02 12:48:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:48:04,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-12-02 12:48:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:04,298 INFO L225 Difference]: With dead ends: 1092 [2024-12-02 12:48:04,299 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 12:48:04,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:48:04,301 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 84 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:04,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5405 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 12:48:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 12:48:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.636150234741784) internal successors, (697), 445 states have internal predecessors, (697), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 890 transitions. [2024-12-02 12:48:04,320 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 890 transitions. Word has length 115 [2024-12-02 12:48:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:04,320 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 890 transitions. [2024-12-02 12:48:04,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 890 transitions. [2024-12-02 12:48:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 12:48:04,323 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:04,323 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:04,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:48:04,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:04,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 439391688, now seen corresponding path program 1 times [2024-12-02 12:48:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:04,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365339800] [2024-12-02 12:48:04,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:04,449 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 12:48:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365339800] [2024-12-02 12:48:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365339800] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836066209] [2024-12-02 12:48:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:04,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:04,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:04,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:04,451 INFO L87 Difference]: Start difference. First operand 551 states and 890 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:04,536 INFO L93 Difference]: Finished difference Result 1071 states and 1746 transitions. [2024-12-02 12:48:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-12-02 12:48:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:04,541 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 12:48:04,541 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 12:48:04,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 12:48:04,543 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 17 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:04,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4356 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 12:48:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 12:48:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6338028169014085) internal successors, (696), 445 states have internal predecessors, (696), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 889 transitions. [2024-12-02 12:48:04,562 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 889 transitions. Word has length 116 [2024-12-02 12:48:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:04,562 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 889 transitions. [2024-12-02 12:48:04,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 889 transitions. [2024-12-02 12:48:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 12:48:04,565 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:04,565 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:04,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:48:04,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:04,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash -12274332, now seen corresponding path program 1 times [2024-12-02 12:48:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:04,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656092560] [2024-12-02 12:48:04,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:04,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:04,687 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 12:48:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656092560] [2024-12-02 12:48:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656092560] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876759581] [2024-12-02 12:48:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:04,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:04,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:04,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:04,689 INFO L87 Difference]: Start difference. First operand 551 states and 889 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:04,766 INFO L93 Difference]: Finished difference Result 1071 states and 1745 transitions. [2024-12-02 12:48:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2024-12-02 12:48:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:04,770 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 12:48:04,771 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 12:48:04,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 12:48:04,773 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 16 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:04,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4356 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 12:48:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 12:48:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6314553990610328) internal successors, (695), 445 states have internal predecessors, (695), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 888 transitions. [2024-12-02 12:48:04,792 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 888 transitions. Word has length 117 [2024-12-02 12:48:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:04,792 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 888 transitions. [2024-12-02 12:48:04,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 888 transitions. [2024-12-02 12:48:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 12:48:04,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:04,795 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:04,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:48:04,795 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:04,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1832003937, now seen corresponding path program 1 times [2024-12-02 12:48:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:04,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209083967] [2024-12-02 12:48:04,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:04,950 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 12:48:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209083967] [2024-12-02 12:48:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209083967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:04,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530382515] [2024-12-02 12:48:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:04,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:04,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:04,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:04,952 INFO L87 Difference]: Start difference. First operand 551 states and 888 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:05,009 INFO L93 Difference]: Finished difference Result 1071 states and 1744 transitions. [2024-12-02 12:48:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:05,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-12-02 12:48:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:05,016 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 12:48:05,016 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 12:48:05,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:05,020 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 9 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:05,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2637 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 12:48:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 12:48:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6291079812206573) internal successors, (694), 445 states have internal predecessors, (694), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 887 transitions. [2024-12-02 12:48:05,053 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 887 transitions. Word has length 118 [2024-12-02 12:48:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:05,054 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 887 transitions. [2024-12-02 12:48:05,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 887 transitions. [2024-12-02 12:48:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 12:48:05,059 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:05,059 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:05,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:48:05,059 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:05,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1468269661, now seen corresponding path program 1 times [2024-12-02 12:48:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936199929] [2024-12-02 12:48:05,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:05,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:05,428 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 12:48:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936199929] [2024-12-02 12:48:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936199929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:05,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:05,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:48:05,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383664972] [2024-12-02 12:48:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:05,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:05,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:05,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:05,430 INFO L87 Difference]: Start difference. First operand 551 states and 887 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:05,562 INFO L93 Difference]: Finished difference Result 1065 states and 1732 transitions. [2024-12-02 12:48:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:48:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2024-12-02 12:48:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:05,568 INFO L225 Difference]: With dead ends: 1065 [2024-12-02 12:48:05,568 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 12:48:05,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 12:48:05,571 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 5 mSDsluCounter, 6947 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7818 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:05,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7818 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 12:48:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 12:48:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 426 states have (on average 1.6267605633802817) internal successors, (693), 445 states have internal predecessors, (693), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 12:48:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 886 transitions. [2024-12-02 12:48:05,596 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 886 transitions. Word has length 118 [2024-12-02 12:48:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:05,596 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 886 transitions. [2024-12-02 12:48:05,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 12:48:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 886 transitions. [2024-12-02 12:48:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 12:48:05,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:05,600 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:05,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:48:05,601 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:05,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 131259599, now seen corresponding path program 1 times [2024-12-02 12:48:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:05,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485876873] [2024-12-02 12:48:05,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485876873] [2024-12-02 12:48:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485876873] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051854870] [2024-12-02 12:48:05,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:05,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:05,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:48:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:06,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:06,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:06,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051854870] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:06,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462103098] [2024-12-02 12:48:06,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:06,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:06,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:06,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:06,179 INFO L87 Difference]: Start difference. First operand 551 states and 886 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:06,268 INFO L93 Difference]: Finished difference Result 1558 states and 2567 transitions. [2024-12-02 12:48:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2024-12-02 12:48:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:06,279 INFO L225 Difference]: With dead ends: 1558 [2024-12-02 12:48:06,279 INFO L226 Difference]: Without dead ends: 1052 [2024-12-02 12:48:06,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:06,283 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 827 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:06,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2471 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2024-12-02 12:48:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1032. [2024-12-02 12:48:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 801 states have (on average 1.651685393258427) internal successors, (1323), 833 states have internal predecessors, (1323), 184 states have call successors, (184), 46 states have call predecessors, (184), 46 states have return successors, (185), 178 states have call predecessors, (185), 179 states have call successors, (185) [2024-12-02 12:48:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1692 transitions. [2024-12-02 12:48:06,351 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1692 transitions. Word has length 119 [2024-12-02 12:48:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:06,351 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1692 transitions. [2024-12-02 12:48:06,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 12:48:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1692 transitions. [2024-12-02 12:48:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 12:48:06,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:06,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:06,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:48:06,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:48:06,556 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:06,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash -378213491, now seen corresponding path program 1 times [2024-12-02 12:48:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724777375] [2024-12-02 12:48:06,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724777375] [2024-12-02 12:48:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724777375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767462384] [2024-12-02 12:48:06,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:06,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:06,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:48:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:07,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:07,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:07,101 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 12:48:07,102 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767462384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030010020] [2024-12-02 12:48:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:07,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:07,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:07,103 INFO L87 Difference]: Start difference. First operand 1032 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:07,204 INFO L93 Difference]: Finished difference Result 2996 states and 4986 transitions. [2024-12-02 12:48:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-12-02 12:48:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:07,222 INFO L225 Difference]: With dead ends: 2996 [2024-12-02 12:48:07,222 INFO L226 Difference]: Without dead ends: 2009 [2024-12-02 12:48:07,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:07,230 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 871 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:07,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1831 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2024-12-02 12:48:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2007. [2024-12-02 12:48:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1559 states have (on average 1.6632456703014753) internal successors, (2593), 1619 states have internal predecessors, (2593), 358 states have call successors, (358), 87 states have call predecessors, (358), 89 states have return successors, (384), 352 states have call predecessors, (384), 353 states have call successors, (384) [2024-12-02 12:48:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3335 transitions. [2024-12-02 12:48:07,334 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3335 transitions. Word has length 119 [2024-12-02 12:48:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:07,335 INFO L471 AbstractCegarLoop]: Abstraction has 2007 states and 3335 transitions. [2024-12-02 12:48:07,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3335 transitions. [2024-12-02 12:48:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 12:48:07,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:07,339 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:07,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:48:07,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:48:07,540 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:07,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1160141612, now seen corresponding path program 1 times [2024-12-02 12:48:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195781797] [2024-12-02 12:48:07,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:07,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195781797] [2024-12-02 12:48:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195781797] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974638873] [2024-12-02 12:48:07,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:07,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:07,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:07,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:48:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:08,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:08,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:08,056 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 12:48:08,056 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974638873] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:08,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369892063] [2024-12-02 12:48:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:08,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:08,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:08,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:08,058 INFO L87 Difference]: Start difference. First operand 2007 states and 3335 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:08,191 INFO L93 Difference]: Finished difference Result 5923 states and 9956 transitions. [2024-12-02 12:48:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2024-12-02 12:48:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:08,214 INFO L225 Difference]: With dead ends: 5923 [2024-12-02 12:48:08,214 INFO L226 Difference]: Without dead ends: 3961 [2024-12-02 12:48:08,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:08,221 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 870 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:08,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1787 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2024-12-02 12:48:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3958. [2024-12-02 12:48:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3076 states have (on average 1.6687256176853056) internal successors, (5133), 3192 states have internal predecessors, (5133), 706 states have call successors, (706), 169 states have call predecessors, (706), 175 states have return successors, (810), 700 states have call predecessors, (810), 701 states have call successors, (810) [2024-12-02 12:48:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 6649 transitions. [2024-12-02 12:48:08,369 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 6649 transitions. Word has length 120 [2024-12-02 12:48:08,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:08,369 INFO L471 AbstractCegarLoop]: Abstraction has 3958 states and 6649 transitions. [2024-12-02 12:48:08,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 6649 transitions. [2024-12-02 12:48:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 12:48:08,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:08,372 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:08,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:48:08,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:48:08,573 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:08,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1604513455, now seen corresponding path program 1 times [2024-12-02 12:48:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:08,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493979001] [2024-12-02 12:48:08,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:08,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493979001] [2024-12-02 12:48:08,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493979001] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703744225] [2024-12-02 12:48:08,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:08,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:08,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:08,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:08,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:48:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:09,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:09,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:09,082 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 12:48:09,082 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703744225] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:09,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577826255] [2024-12-02 12:48:09,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:09,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:09,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:09,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:09,085 INFO L87 Difference]: Start difference. First operand 3958 states and 6649 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:09,349 INFO L93 Difference]: Finished difference Result 11778 states and 20021 transitions. [2024-12-02 12:48:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-12-02 12:48:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:09,387 INFO L225 Difference]: With dead ends: 11778 [2024-12-02 12:48:09,387 INFO L226 Difference]: Without dead ends: 7865 [2024-12-02 12:48:09,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:09,400 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 868 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:09,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1783 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2024-12-02 12:48:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 7861. [2024-12-02 12:48:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 6111 states have (on average 1.6709212894779906) internal successors, (10211), 6339 states have internal predecessors, (10211), 1402 states have call successors, (1402), 333 states have call predecessors, (1402), 347 states have return successors, (1746), 1396 states have call predecessors, (1746), 1397 states have call successors, (1746) [2024-12-02 12:48:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 13359 transitions. [2024-12-02 12:48:09,668 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 13359 transitions. Word has length 121 [2024-12-02 12:48:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:09,668 INFO L471 AbstractCegarLoop]: Abstraction has 7861 states and 13359 transitions. [2024-12-02 12:48:09,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 13359 transitions. [2024-12-02 12:48:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 12:48:09,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:09,672 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:09,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 12:48:09,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:09,873 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:09,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1799824690, now seen corresponding path program 1 times [2024-12-02 12:48:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346997775] [2024-12-02 12:48:09,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:10,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:10,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346997775] [2024-12-02 12:48:10,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346997775] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:10,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059249610] [2024-12-02 12:48:10,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:10,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:10,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:10,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:10,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:48:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:10,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:10,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:10,420 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 12:48:10,420 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059249610] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:10,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515527878] [2024-12-02 12:48:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:10,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:10,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:10,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:10,422 INFO L87 Difference]: Start difference. First operand 7861 states and 13359 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:10,889 INFO L93 Difference]: Finished difference Result 23489 states and 40562 transitions. [2024-12-02 12:48:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 122 [2024-12-02 12:48:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:11,060 INFO L225 Difference]: With dead ends: 23489 [2024-12-02 12:48:11,060 INFO L226 Difference]: Without dead ends: 15673 [2024-12-02 12:48:11,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:11,095 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 867 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:11,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1775 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15673 states. [2024-12-02 12:48:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15673 to 15668. [2024-12-02 12:48:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15668 states, 12182 states have (on average 1.6714004268593006) internal successors, (20361), 12634 states have internal predecessors, (20361), 2794 states have call successors, (2794), 661 states have call predecessors, (2794), 691 states have return successors, (3894), 2788 states have call predecessors, (3894), 2789 states have call successors, (3894) [2024-12-02 12:48:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15668 states to 15668 states and 27049 transitions. [2024-12-02 12:48:12,008 INFO L78 Accepts]: Start accepts. Automaton has 15668 states and 27049 transitions. Word has length 122 [2024-12-02 12:48:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:12,008 INFO L471 AbstractCegarLoop]: Abstraction has 15668 states and 27049 transitions. [2024-12-02 12:48:12,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 15668 states and 27049 transitions. [2024-12-02 12:48:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 12:48:12,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:12,014 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 12:48:12,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 12:48:12,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:12,215 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:12,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash 39879121, now seen corresponding path program 1 times [2024-12-02 12:48:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:12,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079217194] [2024-12-02 12:48:12,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:48:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079217194] [2024-12-02 12:48:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079217194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668841307] [2024-12-02 12:48:12,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:12,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:12,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:12,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:12,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:48:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:12,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:48:12,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:12,715 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 12:48:12,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:48:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668841307] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:48:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 12:48:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013748635] [2024-12-02 12:48:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:12,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:12,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:12,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:12,717 INFO L87 Difference]: Start difference. First operand 15668 states and 27049 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:13,382 INFO L93 Difference]: Finished difference Result 46912 states and 83098 transitions. [2024-12-02 12:48:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-12-02 12:48:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:13,634 INFO L225 Difference]: With dead ends: 46912 [2024-12-02 12:48:13,634 INFO L226 Difference]: Without dead ends: 31281 [2024-12-02 12:48:13,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:13,783 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 865 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:13,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1835 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31281 states. [2024-12-02 12:48:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31281 to 31275. [2024-12-02 12:48:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31275 states, 24318 states have (on average 1.67077884694465) internal successors, (40630), 25218 states have internal predecessors, (40630), 5578 states have call successors, (5578), 1317 states have call predecessors, (5578), 1378 states have return successors, (9161), 5571 states have call predecessors, (9161), 5573 states have call successors, (9161) [2024-12-02 12:48:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31275 states to 31275 states and 55369 transitions. [2024-12-02 12:48:15,297 INFO L78 Accepts]: Start accepts. Automaton has 31275 states and 55369 transitions. Word has length 123 [2024-12-02 12:48:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:15,297 INFO L471 AbstractCegarLoop]: Abstraction has 31275 states and 55369 transitions. [2024-12-02 12:48:15,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 12:48:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 31275 states and 55369 transitions. [2024-12-02 12:48:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 12:48:15,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:15,315 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-12-02 12:48:15,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:48:15,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:15,516 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:15,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -358372764, now seen corresponding path program 1 times [2024-12-02 12:48:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875832739] [2024-12-02 12:48:15,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:15,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875832739] [2024-12-02 12:48:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875832739] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:15,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:15,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601310988] [2024-12-02 12:48:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:15,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:15,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:15,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:15,764 INFO L87 Difference]: Start difference. First operand 31275 states and 55369 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:17,397 INFO L93 Difference]: Finished difference Result 62761 states and 115015 transitions. [2024-12-02 12:48:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:17,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2024-12-02 12:48:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:17,751 INFO L225 Difference]: With dead ends: 62761 [2024-12-02 12:48:17,751 INFO L226 Difference]: Without dead ends: 31531 [2024-12-02 12:48:17,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:17,917 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 880 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:17,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 3247 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:48:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2024-12-02 12:48:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 31531. [2024-12-02 12:48:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31531 states, 24510 states have (on average 1.6655242758057935) internal successors, (40822), 25410 states have internal predecessors, (40822), 5578 states have call successors, (5578), 1381 states have call predecessors, (5578), 1442 states have return successors, (9225), 5571 states have call predecessors, (9225), 5573 states have call successors, (9225) [2024-12-02 12:48:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31531 states to 31531 states and 55625 transitions. [2024-12-02 12:48:19,004 INFO L78 Accepts]: Start accepts. Automaton has 31531 states and 55625 transitions. Word has length 189 [2024-12-02 12:48:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,004 INFO L471 AbstractCegarLoop]: Abstraction has 31531 states and 55625 transitions. [2024-12-02 12:48:19,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 31531 states and 55625 transitions. [2024-12-02 12:48:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 12:48:19,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,016 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-12-02 12:48:19,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:48:19,016 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1393040710, now seen corresponding path program 1 times [2024-12-02 12:48:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359073858] [2024-12-02 12:48:19,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:19,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359073858] [2024-12-02 12:48:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359073858] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:19,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124896153] [2024-12-02 12:48:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:19,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:19,172 INFO L87 Difference]: Start difference. First operand 31531 states and 55625 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,883 INFO L93 Difference]: Finished difference Result 63337 states and 115463 transitions. [2024-12-02 12:48:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:20,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 190 [2024-12-02 12:48:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:21,124 INFO L225 Difference]: With dead ends: 63337 [2024-12-02 12:48:21,124 INFO L226 Difference]: Without dead ends: 31851 [2024-12-02 12:48:21,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:21,303 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 879 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:21,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3253 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:48:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31851 states. [2024-12-02 12:48:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31851 to 31851. [2024-12-02 12:48:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31851 states, 24766 states have (on average 1.6586449164176693) internal successors, (41078), 25666 states have internal predecessors, (41078), 5578 states have call successors, (5578), 1445 states have call predecessors, (5578), 1506 states have return successors, (9289), 5571 states have call predecessors, (9289), 5573 states have call successors, (9289) [2024-12-02 12:48:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31851 states to 31851 states and 55945 transitions. [2024-12-02 12:48:22,451 INFO L78 Accepts]: Start accepts. Automaton has 31851 states and 55945 transitions. Word has length 190 [2024-12-02 12:48:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:22,452 INFO L471 AbstractCegarLoop]: Abstraction has 31851 states and 55945 transitions. [2024-12-02 12:48:22,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 31851 states and 55945 transitions. [2024-12-02 12:48:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 12:48:22,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:22,464 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-12-02 12:48:22,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:48:22,464 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:22,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash -188867680, now seen corresponding path program 1 times [2024-12-02 12:48:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:22,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329991925] [2024-12-02 12:48:22,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:22,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329991925] [2024-12-02 12:48:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329991925] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138393052] [2024-12-02 12:48:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:22,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:22,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:22,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:22,626 INFO L87 Difference]: Start difference. First operand 31851 states and 55945 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:23,861 INFO L93 Difference]: Finished difference Result 64041 states and 116039 transitions. [2024-12-02 12:48:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:23,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 191 [2024-12-02 12:48:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:24,057 INFO L225 Difference]: With dead ends: 64041 [2024-12-02 12:48:24,057 INFO L226 Difference]: Without dead ends: 32235 [2024-12-02 12:48:24,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:24,194 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 879 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:24,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3253 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:48:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32235 states. [2024-12-02 12:48:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32235 to 32235. [2024-12-02 12:48:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32235 states, 25086 states have (on average 1.6502431635175) internal successors, (41398), 25986 states have internal predecessors, (41398), 5578 states have call successors, (5578), 1509 states have call predecessors, (5578), 1570 states have return successors, (9353), 5571 states have call predecessors, (9353), 5573 states have call successors, (9353) [2024-12-02 12:48:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32235 states to 32235 states and 56329 transitions. [2024-12-02 12:48:25,175 INFO L78 Accepts]: Start accepts. Automaton has 32235 states and 56329 transitions. Word has length 191 [2024-12-02 12:48:25,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:25,175 INFO L471 AbstractCegarLoop]: Abstraction has 32235 states and 56329 transitions. [2024-12-02 12:48:25,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32235 states and 56329 transitions. [2024-12-02 12:48:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 12:48:25,185 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:25,185 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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 12:48:25,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:48:25,185 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:25,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1699898870, now seen corresponding path program 1 times [2024-12-02 12:48:25,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:25,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338246590] [2024-12-02 12:48:25,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:25,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338246590] [2024-12-02 12:48:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338246590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410794894] [2024-12-02 12:48:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:25,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:25,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:25,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:25,301 INFO L87 Difference]: Start difference. First operand 32235 states and 56329 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:26,681 INFO L93 Difference]: Finished difference Result 64873 states and 116743 transitions. [2024-12-02 12:48:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:26,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 192 [2024-12-02 12:48:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:26,854 INFO L225 Difference]: With dead ends: 64873 [2024-12-02 12:48:26,854 INFO L226 Difference]: Without dead ends: 32683 [2024-12-02 12:48:26,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:26,999 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 879 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:26,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3253 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:48:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32683 states. [2024-12-02 12:48:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32683 to 32683. [2024-12-02 12:48:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32683 states, 25470 states have (on average 1.6404397330192384) internal successors, (41782), 26370 states have internal predecessors, (41782), 5578 states have call successors, (5578), 1573 states have call predecessors, (5578), 1634 states have return successors, (9417), 5571 states have call predecessors, (9417), 5573 states have call successors, (9417) [2024-12-02 12:48:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32683 states to 32683 states and 56777 transitions. [2024-12-02 12:48:28,463 INFO L78 Accepts]: Start accepts. Automaton has 32683 states and 56777 transitions. Word has length 192 [2024-12-02 12:48:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:28,463 INFO L471 AbstractCegarLoop]: Abstraction has 32683 states and 56777 transitions. [2024-12-02 12:48:28,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32683 states and 56777 transitions. [2024-12-02 12:48:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 12:48:28,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:28,474 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-12-02 12:48:28,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:48:28,474 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:28,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -958739236, now seen corresponding path program 1 times [2024-12-02 12:48:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:28,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554651364] [2024-12-02 12:48:28,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554651364] [2024-12-02 12:48:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554651364] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:48:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319441137] [2024-12-02 12:48:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:28,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:28,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:28,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:28,707 INFO L87 Difference]: Start difference. First operand 32683 states and 56777 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 12:48:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:37,394 INFO L93 Difference]: Finished difference Result 145098 states and 280032 transitions. [2024-12-02 12:48:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 12:48:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) Word has length 193 [2024-12-02 12:48:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:38,039 INFO L225 Difference]: With dead ends: 145098 [2024-12-02 12:48:38,039 INFO L226 Difference]: Without dead ends: 112460 [2024-12-02 12:48:38,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:48:38,239 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 2797 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 10887 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 4998 SdHoareTripleChecker+Invalid, 11625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 10887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:38,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2913 Valid, 4998 Invalid, 11625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [738 Valid, 10887 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 12:48:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112460 states. [2024-12-02 12:48:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112460 to 110163. [2024-12-02 12:48:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110163 states, 83651 states have (on average 1.6232322387060525) internal successors, (135785), 87109 states have internal predecessors, (135785), 21004 states have call successors, (21004), 4710 states have call predecessors, (21004), 5507 states have return successors, (50154), 21479 states have call predecessors, (50154), 20999 states have call successors, (50154) [2024-12-02 12:48:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110163 states to 110163 states and 206943 transitions. [2024-12-02 12:48:43,779 INFO L78 Accepts]: Start accepts. Automaton has 110163 states and 206943 transitions. Word has length 193 [2024-12-02 12:48:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:43,780 INFO L471 AbstractCegarLoop]: Abstraction has 110163 states and 206943 transitions. [2024-12-02 12:48:43,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 12:48:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 110163 states and 206943 transitions. [2024-12-02 12:48:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 12:48:43,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:43,845 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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 12:48:43,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:48:43,845 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:43,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2030274662, now seen corresponding path program 1 times [2024-12-02 12:48:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64264308] [2024-12-02 12:48:43,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 12:48:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:44,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64264308] [2024-12-02 12:48:44,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64264308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540852416] [2024-12-02 12:48:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:44,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:48:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:44,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:48:44,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:48:44,188 INFO L87 Difference]: Start difference. First operand 110163 states and 206943 transitions. Second operand has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:46,905 INFO L93 Difference]: Finished difference Result 142489 states and 263103 transitions. [2024-12-02 12:48:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:48:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 196 [2024-12-02 12:48:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:47,068 INFO L225 Difference]: With dead ends: 142489 [2024-12-02 12:48:47,068 INFO L226 Difference]: Without dead ends: 32360 [2024-12-02 12:48:47,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:47,413 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 7 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6040 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:47,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6040 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32360 states. [2024-12-02 12:48:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32360 to 32360. [2024-12-02 12:48:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32360 states, 25275 states have (on average 1.640158259149357) internal successors, (41455), 26175 states have internal predecessors, (41455), 5450 states have call successors, (5450), 1573 states have call predecessors, (5450), 1634 states have return successors, (9289), 5443 states have call predecessors, (9289), 5445 states have call successors, (9289) [2024-12-02 12:48:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32360 states to 32360 states and 56194 transitions. [2024-12-02 12:48:48,489 INFO L78 Accepts]: Start accepts. Automaton has 32360 states and 56194 transitions. Word has length 196 [2024-12-02 12:48:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:48,489 INFO L471 AbstractCegarLoop]: Abstraction has 32360 states and 56194 transitions. [2024-12-02 12:48:48,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 12:48:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 32360 states and 56194 transitions. [2024-12-02 12:48:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 12:48:48,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:48,500 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1] [2024-12-02 12:48:48,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:48:48,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:48,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1865650113, now seen corresponding path program 1 times [2024-12-02 12:48:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879426226] [2024-12-02 12:48:48,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-02 12:48:49,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:49,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879426226] [2024-12-02 12:48:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879426226] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:49,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019967812] [2024-12-02 12:48:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:49,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:49,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:49,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:49,162 INFO L87 Difference]: Start difference. First operand 32360 states and 56194 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 12:48:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:52,192 INFO L93 Difference]: Finished difference Result 64934 states and 115520 transitions. [2024-12-02 12:48:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:48:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 201 [2024-12-02 12:48:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:52,381 INFO L225 Difference]: With dead ends: 64934 [2024-12-02 12:48:52,381 INFO L226 Difference]: Without dead ends: 32616 [2024-12-02 12:48:52,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:48:52,495 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 1326 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:52,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1719 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 12:48:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32616 states. [2024-12-02 12:48:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32616 to 32616. [2024-12-02 12:48:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32616 states, 25467 states have (on average 1.6353319982722738) internal successors, (41647), 26367 states have internal predecessors, (41647), 5450 states have call successors, (5450), 1573 states have call predecessors, (5450), 1698 states have return successors, (9609), 5507 states have call predecessors, (9609), 5445 states have call successors, (9609) [2024-12-02 12:48:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32616 states to 32616 states and 56706 transitions. [2024-12-02 12:48:53,713 INFO L78 Accepts]: Start accepts. Automaton has 32616 states and 56706 transitions. Word has length 201 [2024-12-02 12:48:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:53,713 INFO L471 AbstractCegarLoop]: Abstraction has 32616 states and 56706 transitions. [2024-12-02 12:48:53,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 12:48:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 32616 states and 56706 transitions. [2024-12-02 12:48:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 12:48:53,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:53,722 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1] [2024-12-02 12:48:53,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:48:53,722 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:53,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash 831981945, now seen corresponding path program 1 times [2024-12-02 12:48:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645938140] [2024-12-02 12:48:53,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 12:48:53,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645938140] [2024-12-02 12:48:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645938140] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:53,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:53,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980109202] [2024-12-02 12:48:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:53,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:48:53,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:53,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:48:53,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:48:53,875 INFO L87 Difference]: Start difference. First operand 32616 states and 56706 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 12:48:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:59,510 INFO L93 Difference]: Finished difference Result 117921 states and 214052 transitions. [2024-12-02 12:48:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:48:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 202 [2024-12-02 12:48:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:00,015 INFO L225 Difference]: With dead ends: 117921 [2024-12-02 12:49:00,015 INFO L226 Difference]: Without dead ends: 85283 [2024-12-02 12:49:00,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:49:00,202 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 3552 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 5348 mSolverCounterSat, 977 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3634 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 6325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 5348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:00,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3634 Valid, 2349 Invalid, 6325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [977 Valid, 5348 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 12:49:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85283 states. [2024-12-02 12:49:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85283 to 84777. [2024-12-02 12:49:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84777 states, 66140 states have (on average 1.5974448140308437) internal successors, (105655), 68383 states have internal predecessors, (105655), 13930 states have call successors, (13930), 4421 states have call predecessors, (13930), 4706 states have return successors, (30074), 13892 states have call predecessors, (30074), 13925 states have call successors, (30074) [2024-12-02 12:49:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84777 states to 84777 states and 149659 transitions. [2024-12-02 12:49:04,805 INFO L78 Accepts]: Start accepts. Automaton has 84777 states and 149659 transitions. Word has length 202 [2024-12-02 12:49:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:04,805 INFO L471 AbstractCegarLoop]: Abstraction has 84777 states and 149659 transitions. [2024-12-02 12:49:04,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 12:49:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 84777 states and 149659 transitions. [2024-12-02 12:49:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 12:49:04,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:04,814 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:04,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:49:04,814 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:04,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2110679939, now seen corresponding path program 1 times [2024-12-02 12:49:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618663341] [2024-12-02 12:49:04,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-12-02 12:49:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618663341] [2024-12-02 12:49:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618663341] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944731125] [2024-12-02 12:49:04,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:04,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:04,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:04,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:49:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:05,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:05,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:49:05,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944731125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:05,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:05,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 12:49:05,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013755452] [2024-12-02 12:49:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:05,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:05,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:05,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:05,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:49:05,309 INFO L87 Difference]: Start difference. First operand 84777 states and 149659 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:09,320 INFO L93 Difference]: Finished difference Result 176710 states and 320520 transitions. [2024-12-02 12:49:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:49:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 204 [2024-12-02 12:49:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:09,821 INFO L225 Difference]: With dead ends: 176710 [2024-12-02 12:49:09,821 INFO L226 Difference]: Without dead ends: 91977 [2024-12-02 12:49:10,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 206 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 12:49:10,340 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 144 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:10,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2404 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:49:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91977 states. [2024-12-02 12:49:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91977 to 91017. [2024-12-02 12:49:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91017 states, 72220 states have (on average 1.6246884519523677) internal successors, (117335), 74463 states have internal predecessors, (117335), 13930 states have call successors, (13930), 4581 states have call predecessors, (13930), 4866 states have return successors, (30074), 13892 states have call predecessors, (30074), 13925 states have call successors, (30074) [2024-12-02 12:49:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91017 states to 91017 states and 161339 transitions. [2024-12-02 12:49:14,957 INFO L78 Accepts]: Start accepts. Automaton has 91017 states and 161339 transitions. Word has length 204 [2024-12-02 12:49:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:14,957 INFO L471 AbstractCegarLoop]: Abstraction has 91017 states and 161339 transitions. [2024-12-02 12:49:14,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 91017 states and 161339 transitions. [2024-12-02 12:49:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-02 12:49:14,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:14,966 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:14,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:49:15,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:15,166 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:15,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:15,167 INFO L85 PathProgramCache]: Analyzing trace with hash 621116669, now seen corresponding path program 1 times [2024-12-02 12:49:15,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:15,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023544268] [2024-12-02 12:49:15,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-12-02 12:49:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:15,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023544268] [2024-12-02 12:49:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023544268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:15,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973881186] [2024-12-02 12:49:15,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:15,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:15,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:15,251 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:15,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:49:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:15,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:15,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:49:15,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973881186] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:15,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:15,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:49:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309076347] [2024-12-02 12:49:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:15,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:15,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:15,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:15,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:49:15,569 INFO L87 Difference]: Start difference. First operand 91017 states and 161339 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:19,291 INFO L93 Difference]: Finished difference Result 189670 states and 344040 transitions. [2024-12-02 12:49:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:49:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2024-12-02 12:49:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:19,942 INFO L225 Difference]: With dead ends: 189670 [2024-12-02 12:49:19,942 INFO L226 Difference]: Without dead ends: 98697 [2024-12-02 12:49:20,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 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 12:49:20,329 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 142 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:20,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2401 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:49:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98697 states. [2024-12-02 12:49:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98697 to 97257. [2024-12-02 12:49:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97257 states, 78300 states have (on average 1.6477011494252873) internal successors, (129015), 80543 states have internal predecessors, (129015), 13930 states have call successors, (13930), 4741 states have call predecessors, (13930), 5026 states have return successors, (30074), 13892 states have call predecessors, (30074), 13925 states have call successors, (30074) [2024-12-02 12:49:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97257 states to 97257 states and 173019 transitions. [2024-12-02 12:49:25,132 INFO L78 Accepts]: Start accepts. Automaton has 97257 states and 173019 transitions. Word has length 209 [2024-12-02 12:49:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:25,132 INFO L471 AbstractCegarLoop]: Abstraction has 97257 states and 173019 transitions. [2024-12-02 12:49:25,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 97257 states and 173019 transitions. [2024-12-02 12:49:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-12-02 12:49:25,142 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:25,142 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:25,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:49:25,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:25,342 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:25,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1803460929, now seen corresponding path program 1 times [2024-12-02 12:49:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216541161] [2024-12-02 12:49:25,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-12-02 12:49:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216541161] [2024-12-02 12:49:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216541161] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151086764] [2024-12-02 12:49:25,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:25,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:25,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:25,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:49:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:25,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:25,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:49:25,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151086764] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:25,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:25,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:49:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423603291] [2024-12-02 12:49:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:25,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:25,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:25,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:25,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:49:25,735 INFO L87 Difference]: Start difference. First operand 97257 states and 173019 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:29,583 INFO L93 Difference]: Finished difference Result 202630 states and 367560 transitions. [2024-12-02 12:49:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:49:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 213 [2024-12-02 12:49:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:30,243 INFO L225 Difference]: With dead ends: 202630 [2024-12-02 12:49:30,243 INFO L226 Difference]: Without dead ends: 105417 [2024-12-02 12:49:30,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 213 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 12:49:30,641 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 140 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:30,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2398 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:49:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105417 states. [2024-12-02 12:49:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105417 to 103497. [2024-12-02 12:49:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103497 states, 84380 states have (on average 1.667397487556293) internal successors, (140695), 86623 states have internal predecessors, (140695), 13930 states have call successors, (13930), 4901 states have call predecessors, (13930), 5186 states have return successors, (30074), 13892 states have call predecessors, (30074), 13925 states have call successors, (30074) [2024-12-02 12:49:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103497 states to 103497 states and 184699 transitions. [2024-12-02 12:49:35,068 INFO L78 Accepts]: Start accepts. Automaton has 103497 states and 184699 transitions. Word has length 213 [2024-12-02 12:49:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:35,069 INFO L471 AbstractCegarLoop]: Abstraction has 103497 states and 184699 transitions. [2024-12-02 12:49:35,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 103497 states and 184699 transitions. [2024-12-02 12:49:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-12-02 12:49:35,082 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:35,082 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:35,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:49:35,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:35,283 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:35,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 651009417, now seen corresponding path program 1 times [2024-12-02 12:49:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729240497] [2024-12-02 12:49:35,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 12:49:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729240497] [2024-12-02 12:49:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729240497] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438397437] [2024-12-02 12:49:35,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:35,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:35,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:35,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:49:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:35,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:35,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:49:35,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438397437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:49:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747203392] [2024-12-02 12:49:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:35,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:35,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:49:35,867 INFO L87 Difference]: Start difference. First operand 103497 states and 184699 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:40,246 INFO L93 Difference]: Finished difference Result 215590 states and 391080 transitions. [2024-12-02 12:49:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:49:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 216 [2024-12-02 12:49:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:40,902 INFO L225 Difference]: With dead ends: 215590 [2024-12-02 12:49:40,902 INFO L226 Difference]: Without dead ends: 112137 [2024-12-02 12:49:41,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:49:41,267 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 138 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:41,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2395 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:49:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112137 states. [2024-12-02 12:49:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112137 to 109737. [2024-12-02 12:49:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109737 states, 90460 states have (on average 1.684446164050409) internal successors, (152375), 92703 states have internal predecessors, (152375), 13930 states have call successors, (13930), 5061 states have call predecessors, (13930), 5346 states have return successors, (30074), 13892 states have call predecessors, (30074), 13925 states have call successors, (30074) [2024-12-02 12:49:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109737 states to 109737 states and 196379 transitions. [2024-12-02 12:49:45,467 INFO L78 Accepts]: Start accepts. Automaton has 109737 states and 196379 transitions. Word has length 216 [2024-12-02 12:49:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:45,468 INFO L471 AbstractCegarLoop]: Abstraction has 109737 states and 196379 transitions. [2024-12-02 12:49:45,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:49:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 109737 states and 196379 transitions. [2024-12-02 12:49:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 12:49:45,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:45,478 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:45,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:49:45,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:45,678 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:45,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2085909907, now seen corresponding path program 1 times [2024-12-02 12:49:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:45,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902129103] [2024-12-02 12:49:45,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:45,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 12:49:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902129103] [2024-12-02 12:49:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902129103] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027612787] [2024-12-02 12:49:45,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:45,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:45,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:49:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:46,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:46,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 12:49:46,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027612787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 12:49:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968567196] [2024-12-02 12:49:46,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:46,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:46,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:46,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:49:46,212 INFO L87 Difference]: Start difference. First operand 109737 states and 196379 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:49:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:50,411 INFO L93 Difference]: Finished difference Result 226630 states and 414440 transitions. [2024-12-02 12:49:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:49:50,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 218 [2024-12-02 12:49:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:51,121 INFO L225 Difference]: With dead ends: 226630 [2024-12-02 12:49:51,121 INFO L226 Difference]: Without dead ends: 116937 [2024-12-02 12:49:51,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:49:51,623 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 139 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:51,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2404 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:49:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116937 states. [2024-12-02 12:49:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116937 to 115977. [2024-12-02 12:49:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115977 states, 96380 states have (on average 1.7005084042332435) internal successors, (163895), 98623 states have internal predecessors, (163895), 14090 states have call successors, (14090), 5221 states have call predecessors, (14090), 5506 states have return successors, (30234), 14052 states have call predecessors, (30234), 14085 states have call successors, (30234) [2024-12-02 12:49:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115977 states to 115977 states and 208219 transitions. [2024-12-02 12:49:56,953 INFO L78 Accepts]: Start accepts. Automaton has 115977 states and 208219 transitions. Word has length 218 [2024-12-02 12:49:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:56,953 INFO L471 AbstractCegarLoop]: Abstraction has 115977 states and 208219 transitions. [2024-12-02 12:49:56,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:49:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 115977 states and 208219 transitions. [2024-12-02 12:49:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 12:49:56,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:56,963 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:56,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:49:57,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 12:49:57,164 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:57,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1663486645, now seen corresponding path program 1 times [2024-12-02 12:49:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075033335] [2024-12-02 12:49:57,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 12:49:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075033335] [2024-12-02 12:49:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075033335] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819885375] [2024-12-02 12:49:57,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:57,350 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:57,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:49:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:57,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:49:57,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 12:49:57,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:49:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819885375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:49:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 12:49:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528339060] [2024-12-02 12:49:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:57,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:49:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:57,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:49:57,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:49:57,701 INFO L87 Difference]: Start difference. First operand 115977 states and 208219 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:50:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:50:02,027 INFO L93 Difference]: Finished difference Result 239590 states and 438440 transitions. [2024-12-02 12:50:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:50:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 219 [2024-12-02 12:50:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:50:02,680 INFO L225 Difference]: With dead ends: 239590 [2024-12-02 12:50:02,680 INFO L226 Difference]: Without dead ends: 123657 [2024-12-02 12:50:03,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:50:03,015 INFO L435 NwaCegarLoop]: 811 mSDtfsCounter, 137 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:50:03,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2401 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:50:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123657 states. [2024-12-02 12:50:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123657 to 122217. [2024-12-02 12:50:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122217 states, 102300 states have (on average 1.7147116324535678) internal successors, (175415), 104543 states have internal predecessors, (175415), 14250 states have call successors, (14250), 5381 states have call predecessors, (14250), 5666 states have return successors, (30394), 14212 states have call predecessors, (30394), 14245 states have call successors, (30394) [2024-12-02 12:50:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122217 states to 122217 states and 220059 transitions. [2024-12-02 12:50:07,666 INFO L78 Accepts]: Start accepts. Automaton has 122217 states and 220059 transitions. Word has length 219 [2024-12-02 12:50:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:50:07,667 INFO L471 AbstractCegarLoop]: Abstraction has 122217 states and 220059 transitions. [2024-12-02 12:50:07,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:50:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 122217 states and 220059 transitions. [2024-12-02 12:50:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 12:50:07,683 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:50:07,684 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:50:07,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:50:07,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 12:50:07,884 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:50:07,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:50:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -14556280, now seen corresponding path program 1 times [2024-12-02 12:50:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:50:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377337900] [2024-12-02 12:50:07,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:50:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:50:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:50:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 12:50:08,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:50:08,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377337900] [2024-12-02 12:50:08,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377337900] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:50:08,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785606829] [2024-12-02 12:50:08,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:50:08,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:50:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:50:08,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:50:08,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:50:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:50:08,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:50:08,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:50:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 12:50:08,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:50:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785606829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:50:08,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:50:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 12:50:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915622130] [2024-12-02 12:50:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:50:08,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:50:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:50:08,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:50:08,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:50:08,606 INFO L87 Difference]: Start difference. First operand 122217 states and 220059 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:50:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:50:13,019 INFO L93 Difference]: Finished difference Result 252550 states and 462440 transitions. [2024-12-02 12:50:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:50:13,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 220 [2024-12-02 12:50:13,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:50:13,718 INFO L225 Difference]: With dead ends: 252550 [2024-12-02 12:50:13,718 INFO L226 Difference]: Without dead ends: 130377 [2024-12-02 12:50:14,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:50:14,300 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 136 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:50:14,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2396 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:50:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130377 states. [2024-12-02 12:50:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130377 to 128457. [2024-12-02 12:50:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128457 states, 108220 states have (on average 1.7273609314359637) internal successors, (186935), 110463 states have internal predecessors, (186935), 14410 states have call successors, (14410), 5541 states have call predecessors, (14410), 5826 states have return successors, (30554), 14372 states have call predecessors, (30554), 14405 states have call successors, (30554) [2024-12-02 12:50:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128457 states to 128457 states and 231899 transitions. [2024-12-02 12:50:19,267 INFO L78 Accepts]: Start accepts. Automaton has 128457 states and 231899 transitions. Word has length 220 [2024-12-02 12:50:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:50:19,268 INFO L471 AbstractCegarLoop]: Abstraction has 128457 states and 231899 transitions. [2024-12-02 12:50:19,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:50:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 128457 states and 231899 transitions. [2024-12-02 12:50:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 12:50:19,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:50:19,278 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:50:19,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:50:19,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:50:19,479 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:50:19,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:50:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1001388614, now seen corresponding path program 1 times [2024-12-02 12:50:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:50:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752244710] [2024-12-02 12:50:19,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:50:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:50:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:50:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 12:50:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:50:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752244710] [2024-12-02 12:50:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752244710] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:50:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864540182] [2024-12-02 12:50:19,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:50:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:50:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:50:19,677 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:50:19,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab3d953-2435-4a94-a1aa-3fb60df602c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:50:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:50:20,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:50:20,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:50:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 12:50:20,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:50:20,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864540182] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:50:20,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:50:20,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 12:50:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309956699] [2024-12-02 12:50:20,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:50:20,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:50:20,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:50:20,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:50:20,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:50:20,050 INFO L87 Difference]: Start difference. First operand 128457 states and 231899 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:50:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:50:25,014 INFO L93 Difference]: Finished difference Result 265510 states and 486440 transitions. [2024-12-02 12:50:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:50:25,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 221 [2024-12-02 12:50:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted.